Showing papers on "Prime mover published in 1975"

Energy conversion system using windmill

Abstract: A system for recovering the energy from atmospheric wind wherein a windmill operates a compressor for compressing air which is stored in one or more tanks. The compressed air is used to drive a prime mover coupled by gear means to an electrical generator or other work-producing apparatus. The prime mover is operated by hydraulic fluid responsive to the application of the compressed air to fluid tanks by valve means responsive to the operation of the prime mover. The compressor has a unique means for lubricating the same. Alternately, the prime mover can be operated by conventional water pressure during periods of little or no wind.

Thermodynamic prime mover with heat exchanger

Abstract: The useful life of a gas turbine combustion chamber and especially its flame pipe is increased by an improved cooling arrangement which branches off a small proportion of the air from the compressor upstream of the combustion chamber. The branched off air is directed into the combustion chamber and onto the flame pipe so that it flows in a cooling manner around at least the front end of the flame pipe without initially substantially participating in the combustion.

Water action powered pump

Abstract: Method and apparatus wherein complex multiplanar surface motion of the sea or other fluid body is converted into usable energy. One embodiment of the apparatus comprises a pair of flexible tubular pumping elements that pump a fluid, such as sea water, to load such as a storage means or an energy converter such as a turbine driven prime mover. The apparatus makes use of multiplanar waves and surface currents that axially flex the pumping elements to provide hydraulic or pneumatic pressure for pumping the water. Floats distributed along the pumping elements support the apparatus horizontally at the surface of the sea and act as a breakwater. Lever arm struts, attached to the floats, are coupled together with swivel connector linkage to form a flexible beam or truss structure that permits the pumping elements to flex axially as complex wave systems and currents apply natural multiplanar forces to the floats. Protective chord segments, connected between adjacent strut ends, act as an expansion curb to prevent the pumping elements from flexing or expanding excessively due to strong surface currents and waves. Output tube segments connected to outlet valves on the pumping elements direct pumped fluid to a collector tube for transfer to the load. The output tube segments may be formed of flexible tubing or the lever arm struts may be tubular and adapted for delivering the pumped fluid to the collector tube. To maximize sensitivity of the apparatus and minimize vulnerability to damage the fluid carrying collector tube is maintained below the surface of the water and the apparatus is provided with an anti-fouling coating to prevent such resistance as barnacle build-up.

Dual motor hydrostatic drive system

Abstract: A pair of hydraulic motors are operatively drivingly connected to a common rotatable member and are employed for transmitting power thereto from a pair of prime movers. A first hydraulic circuit communicates with one of the hydraulic motors and includes a pump driven by one of the prime movers while a second hydraulic circuit communicates with the other of the hydraulic motors and includes a fixed displacement pump and a variable displacement pump driven by the other prime mover. A device associated with the variable displacement pump is responsive to fluid pressures in the first and second hydraulic circuits for automatically varying the output displacement of the variable displacement pump so that a predetermined relationship is maintained between the fluid pressures in the first and second hydraulic circuit.

Mobile equipment air-conditioner

Abstract: An air conditioner is mounted to the roof of an operator's compartment of mobile equipment wherein a hydraulic circuit is empowered by the variable RPM prime mover for the vehicle while the fans and compressor of the unit are driven at a constant speed by means of a single hydraulic motor having an axially vertical shaft journaled in its case and extending above and below the case to drive the evaporator and condenser fans and the compressor.

Change gear transmission in group construction, especially for land vehicles and vehicles for the building industry

Abstract: A transmission for connecting a prime mover with a load, such as vehicle wheels, in which the transmission is of group construction with a primary group shiftable under load and at least one other group which is not shiftable under load. The group shiftable under load provides for at least two forward speeds and a reverse speed at the main output shaft of the transmission which supplies the power to the load.

Hydraulic installation with means for storing energy

Abstract: A hydraulic installation with means for storing energy produced by the prime mover during a rest period of the installation. Energy is stored by a fluid accumulator by suitable positioning of control valves during the reset period. Control of the valves is effected by a logic circuit responsive to pressure in the accumulator, pressure in the main feed conduit leading to the driven device, and the position of a feed conduit control valve.

Power generating apparatus

Abstract: A control system for obtaining maximum power output from electrical generating water pumping, flywheel storage and like systems comprising a wind-driven prime mover coupled to an electrical generator over an extended range of wind velocities is described. The maximum electrical output power is obtained by synchronizing the speed of the generator, and hence the speed of the prime mover, with the maximum power output of the prime mover. Since the maximum output power of a wind-driven prime mover is proportional to the third power of the wind velocity, and is a function of an angular velocity-dependent power coefficient, means are provided for detecting the angular velocity of the prime mover and generating a signal proportional to the cube of said wind velocity. The singal thus generated is used for controlling the magnitude of the excitation field current in the electrical generating apparatus whereby the electrical output varies approximately as a cubic function of the wind velocity and, consequently, as a linear function of the output power of the prime mover. For this purpose the control-signal generating means employs a solid state device or the like which is biased to operate along the third power portion of its characteristic operating curve.

Spring prime mover unit

Abstract: A spring prime mover unit comprising a spring prime mover, a transmission gear and a plurality of connectors. Among the connectors, there are rotatable connectors and non-rotary connectors. The rotatable connectors are the ends of some shafts of the transmission gear and the non-rotary connectors are the attachments of a covering frame. The spring prime mover unit may be exchangeably equipped with auxiliary toy parts or toys which have not prime movers and form various movable toys to one prime mover unit. Therefore, children themselves can assemble various interesting movable toys and enjoy various motion of the toys.

Pneumatic door locking system

Abstract: The system maintains the door of a carrier of goods, such as a truck or railway car, locked when the carrier is parked and inoperative. The system includes a latch mechanism including a bolt spring biased to a latched position and a piston and cylinder mechanism coupled to the latch mechanism in such a way that air pressure applied to the cylinder moves the bolt to an unlatched position. The cylinder is connected by a conduit to a source of air pressure operated by the prime mover of the carrier and a valve mechanism is coupled to the conduit and is manually operable to vent, or supply air pressure to, the cylinder to operate the latch mechanism. When the prime mover is inoperative or disconnected and the carrier is at rest, air pressure is vented from the cylinder to latch the door to prevent theft of goods.

A study of early valve actuation using detailed prime mover and power system simulation

Abstract: Results of studies exploring the effects of early valve actuation on the stability of a nuclear station and a fossil-fired station are presented. The studies were performed on multimachine systems using a detailed representation of steam turbines. The sensitivity effects of the valve actuation times were investigated and the importance of such an investigation is demonstrated.

Engine sensor hydraulic control system

Abstract: The disclosure relates to plural, motor driven hydraulic pump circuits, including circuits having the pumps in at least one circuit operated in pairs with all pumps being driven by a single prime mover. A speed responsive control device unloads one pump in one circuit when engine speed drops below a predetermined value without regard to the source of the condition causing the slowdown. Also included is a crossover means for sensing the pressure in aother circuit for preventing reloading of the unloaded pump when speed rises above the predetermined value unless and until the pressure including the pressure sensed in the other circuit is below a predetermined pressure.

Wind driven prime mover

Abstract: A wind driven prime mover which is driven by a plurality of arcuately shaped wind vanes pivotally mounted on a rotatable turntable. The wind vanes are pivotally mounted on the turntable with their pivot axle disposed in a vertical plane. The pivots are positioned adjacent the periphery of the turntable, with the pivots being spaced equi-distant from each other and equi-distant from the axis of rotation of the turntable. The bottoms of the vanes are arcuately shaped, with the length of the arc being slightly longer than the space between the pivots so that there is an overlap between adjacent vanes. The convex surface of the vanes face outwardly to provide a concave inner surface.

Coupling mechanism adapted to latch object to object substantially coterminously with uncovering universal movement means between objects

Abstract: The disclosure is to a coupling mechanism which may be set operative to project means to effect latch engagement between objects, the means also being projected to set operative means to permit universal relative movement between the objects. An exemplary application may be a prime mover with a control valve accessible to driver who can turn the valve to operate a hitch housing assembly to latch with a vehicle, the hitch housing assembly movement also continuing to uncover universal joint members in chain or connection whereby universal connection may be effected between the vehicle and the prime mover that pulls it. Many other applications of the invention are within contemplation, as in the field of connected floated vessels, railroad cars, trailer homes, and the like.

Automatic pump control system

Abstract: A control system for plural circuits having motor-driven hydraulic pumps. As disclosed, a pair of pumps is connected in a hydraulic actuating circuit individual to that pair and the circuit includes an hydraulically operated actuator to be advanced and retracted by fluid under pressure delivered from the pair of pumps of that circuit. A single prime mover drives the pair of pumps and pumps in other circuits, and each circuit has a pressure-responsive control valve which provides for unloading a pump of the first circuit in response to increases in pressure in the various other circuits to a predetermined value at which, in the absence of such unloading, the input horsepower requirement has risen toward a value which would stall the prime mover.Pumps in several of the circuits may be sequentially and selectively unloaded.

Portable emergency fire fighting and rescue elevator

Abstract: A portable emergency fire fighting rescue and evacuation elevator for high rise buildings having roofs previously equipped with inverted L shaped hook structures, the elevator being comprised of a portable self contained elevator prime mover structure and a portable passenger cab. The elevator prime mover structure is transportable by helicopter to the roof of the building where it is automatically fastened in place by the L shaped hook structures and pays out, from storage drums on the prime mover structure, elevator and electric prime mover cables over the side of the building for fastening to a passenger cab which has been transported by truck to the building. The passenger cab is two stories high with each story having a sliding door between two caterpillar structures, each comprised of an endless belt with suction cups carried on idler wheels for movement of the endless belt suction cups against the side of the building. The passenger cab has means for preventing combustion gas seepage into the cab and a moveable plank beneath each door to forcibly batter through window obstructions and form a walkway between the cab and the building.

Rotary prime mover and compressor and methods of operation thereof

Abstract: A readily reversible, rotary type internal combustion engine which is selectively operable as a compressor and capable of several basic modes of operation, wherein an expansible combustion chamber or volume cyclically initiated from zero volume is chargeable, directly from a contractible compression volume, with compressed gaseous fluids in real-time as the combustion chamber is cyclically formed and expands from a selectively small volume, said volumes being formed within a housing between intermeshing rotors. The flow of compressed and expanding gases within the apparatus is controlled primarily by said rotors.

Underspeed actuator with part throttle control

Abstract: A hydrostatic unit of the type contemplated by the present invention includes one or more pump and motor combinations interconnected by means of a conventional closed loop. Controls for the hydrostatic unit include a speed control and vent valve assembly as well as a venturi manifold which functions to normally establish a selected pressure differential in a pair of supply conduits for determining instant operating conditions for the transmission. In order to automatically regulate displacement of each pump unit in response to prime mover speed, an underspeed actuator valve unit includes a piston which is hydraulically responsive to the differential pressure in order to adjust operation of a lever which controls displacement of the pump unit. A part throttle control valve prevents the underspeed actuator from reducing displacement of the pump unit when speed of the prime mover is reduced by a manual throttle control.

An apparatus with a transversing hoist loader assembly

Abstract: A traversing hoist mechanism driven by a vehicle prime mover is drivingly interconnected with a fluid power drive transmission comprising a pump which is drivingly connected to a pair of fixed displacement hydraulic motors connected in a series arrangement for driving the pumps at the same speed; whereby the fluid power drive transmission effectively moves the hoist trolley assembly fore and aft in addition to raising and lowering a lifting apparatus. A unique control line assembly allows the operator to have complete control of the fluid power drive transmission even while standing on ground level adjacent the rear of the vehicle or at any point along at least one side-wall of the cargo area, thereby permitting greater flexibility of control.

Control system for variable displacement pumps

Abstract: In a hydraulic system having a plurality of variable displacement pumps driven by a prime mover, each pump has a variable ratio input device connected to a load sensing means. Each variable ratio input device automatically reduces the displacement of its respective pump by the same proportion when the prime mover is overloaded irrespective of the displacement setting of the pump and automatically increases the displacement of its pump by the same proportion up to the set displacement when the prime mover is not overloaded.

Self-balancing continuous power transmission system and method

Abstract: A method of torque transmission between a prime mover and a load comprises the provision of a planetary system and a hydraulic torque coupling, the interconnection of the planetary system and the hydraulic torque coupling in a feedback loop, the coupling of the prime mover to the planetary system, the driving of the hydraulic torque coupling with the prime mover through the planetary system, and the transfer of output torques of the planetary system and the hydraulic torque coupling to the load. A transmission system for operation between a prime mover and a load comprises a planetary system and a hydraulic torque coupling which are included in a feedback loop. The planetary system is coupled to the prime mover, the hydraulic torque coupling is driven with the prime mover through the planetary system, and output torques of the planetary system and the hydraulic torque coupling are transferred to the load.

Speed and load responsive underspeed actuator for hydrostatic transmissions

Abstract: A hydrostatic unit of the type contemplated by the present invention includes one or more pump and motor combinations interconnected by means of a conventional closed loop. Controls for the hydrostatic unit include a speed control and vent valve assembly as well as a venturi manifold which functions to normally establish a selected pressure differential in a pair of supply conduits. In order to automatically regulate displacement of each pump unit in response to both engine or prime mover speed and instant load conditions, an underspeed actuator valve unit is hydraulically responsive to the differential pressure in the two conduits and also to changes in output pressure developed by the pump unit.

Reciprocating electrical machine - has piston and cylinder with armature winding and permanent magnet field

Abstract: The machine may be used as a motor to drive a pump or compressor, or as a generator using hydraulic, pneumatic or thermal energy as the prime mover. Typically the piston is of permanent magnet material and moves inside a cylinder surrounded by a winding connected to electrical terminals. Alternatively the piston can be the armature, being connected to the supply by brushes, with a permanent magnet cylinder block. In a combustion engine application the ends of the cylinder can be the combustion chambers with necessary inlet and outlet valves. The cylinder and piston may also take the form of a rotary engine of the wankel type.

Dynamic simulation of generator faults using combined abc and 0dq variables

Abstract: A method is described for obtaining dynamic solutions for the electrical and mechanical transients that accompany balanced or unbalanced faults on an isolated synchronous generator. The method is illustrated with a system containing a prime mover plus governor, synchronous generator, manual or automatic voltage regulation, and reclosing feeder circuit breaker. A combination of abc and Odq variables is employed in the interest of simplicity and economy in computation.

Multi-engine, articulated vehicle apparatus

Abstract: An electronic governor for controlling the speed of one of two coupled prime movers wherein signals corresponding to wheel speeds of each of the two prime movers are compared to produce an error signal for controlling an actuator on one prime mover. The speed of the controlled prime mover may be abruptly reduced where the error signal exceeds a pre-determined threshold value. Monitoring means generally comprise digital circuitry, while control of the actuator is primarily analog acting through a servo loop containing a throttle position sensing device on the master prime mover, the error signal generating device and a throttle control device for the controlled prime mover.

Apparatus for power generation in deep seawater

Abstract: The apparatus is operating in deep seawater, creating there a space of normal pressure and utilizing the arising pressure difference. The device consists of a telescope-like moving pumping equipment, furthermore an angularly built border frame, a prime mover, a locomotion equipment with motor, a counterbalancing system and a power generator.

Mechanized bark hack

Abstract: A tree bark scoring apparatus adapted for transport and for operation aboard a moving, dirigible and speed controllable prime mover.

Energy regeneration and conversion efficiency in a hydraulic hybrid propulsion system

Abstract: An energy storage system having a limited capacity is employed for the purpose of (i) removing the burden of acceleration from internal and external-combustion type prime movers used in rubber-tired and rail urban mass transit vehicles and (ii) providing an efficient regenerative braking system to significantly increase fuel economy during typical stop-start vehicle schedules. Energy is stored in a hydraulic accumulator which is designed to be an integral part of the propulsion system. Data from laboratory tests are presented to indicate achievable energy conversion efficiencies. Computer simulation of various size vehicles being driven over typical transit-vehicle schedules is used to estimate the reduction in vehicular emissions ans energy consumption resulting from the energy storage capability. An increase in fuel economy of up to 30% and an emissions reduction of up to 36% (NO sub x) were observed for the spark-ignited prime mover. When a simple cycle, single shaft gas turbine was simulated, the maximum increase in fuel economy was 24% with up to 50% reduction in emissions.

Tree processing machine

Abstract: A tree processing machine for felling and processing standing trees into predetermined lengths which includes generally a prime mover capable of turning in a short radius with a relatively short support frame as compared to the prior art mounted on the prime mover, a carriage frame pivotally mounted on the support frame about a roll axis generally vertically aligned with and parallel to the longitudinal centerline of the prime mover, a main support bed pivotally mounted at its upper end to the forward end of the carriage frame for pivoting from a vertical position in which the lower end thereof is near the ground to a horizontal position above the prime mover, a set of traversing drive assemblies mounted on the support bed for holding a tree against the bed and for moving the tree longitudinally with respect to the bed, a cutting assembly mounted on that end of the bed opposite its pivoted end and movable with the bed as well as with respect to the bed for selectively felling trees and cutting them into selected lengths, an adjustable delimbing mechanism carried by the bed and carriage frame for selectively delimbing the tree as it is driven by the traversing assembly, topping means carried by the carriage frame for shearing the top from the tree, an automatic control means for controlling the operation of the bed, cutting assembly, traversing drive assemblies, delimbing assembly, and topping means.

Prime mover speed responsive load control for electrically propelled traction vehicles

Abstract: An electrical propulsion control system for self-propelled traction vehicles of the type having a thermal prime mover-driven electric generator supplying energy to traction motors, wherein the electrical output of the generator is regulated within predetermined maximum voltage, current, and power limits and is independently reduced, without reducing the voltage or current limit, in response to the prime mover decelerating to speeds at which it is subject to bogging.