Showing papers on "Paddle published in 1974"

Medical tissue-obtaining system

Abstract: An endometrial tissue-obtaining instrument includes a spiral section formed at one end of a flat plastic member and a handle portion at the other end. The spiral section is insertable into the womb of a female patient and rotated by the handle portion to remove endometrial tissue from the wall of the womb. The spiral section is withdrawn with the specimen of tissue. The trailing portion of the spiral section is inserted into a slot of a plastic paddle and pulled away from the paddle so that the spiral section moves through the slot and is rotated thereby. The thickness of the slot permits the wiping, or extruding, of the tissue from the spiral section onto the paddle whereafter the paddle is manipulated to deposit the tissue onto a slide or stored for future purposes.

Holster with adjustable mounting clip

Abstract: A holster includes a case for holding a hand-gun, and a holster mounting clip or paddle releasably attached to the inner side of the case. The holster can be worn on the hip of a user, without attachment to a belt, by slipping the paddle into the narrow space between the body of the user and the waistband of the user''s clothing. The paddle is roatable about its point of attachment to the case so the orientation of the paddle relative to the case can be adjusted for allowing the holster to be worn either conventionally or in a cross-draw mode. The paddle can be removed from the case to allow the user to attach the holster to his belt by threading the belt through a belt loop attached to the same side of the case as the paddle.

Exercise apparatus for bedridden patients

Abstract: An exercise apparatus for use in combination with a bed having an end frame, consisting of side by side paddle boards, positioned to horizontally extend from the end frame of the bed, a coil spring interconnects each board with a platen, and adjustable means including a screw-nut assembly and guide rods for horizontally positioning the platen and paddle boards relative to the end frame to accommodate the specific patient and his position in the bed.

Cardiac defibrillator depolarizing paddle arrangement

Abstract: A cardiac defibrillator paddle in which the elctrode surface is provided with a removable cap. This permits the electrode to have its conductive paste pre-applied, with the cap readily removable for immediate use.

Aerial dart and paddle game

Abstract: By providing a suction cup dart or shuttlecock in combination with a hand-held paddle or target which incorporates a dart-adhering or holding zone and a dart-rejecting zone, a unique game is provided Furthermore, the suction cup portion of the dart or shuttlecock is flexibly mounted to the dart body, thereby allowing the shuttlecock or dart to hit the adhering zone of the paddle or target at angles other than merely perpendicular and adhere to the surface

Arrangement in a silo for bulk material

Abstract: An arrangement in a silo for bulk material, comprising a rotating agitator centrally arranged in the silo The agitator consists of a rotatable disc equipped with at least one rigid paddle which is mounted on the disc for pivoting about an axis which is offset from the central axis of the disc The swinging of the paddle about the offset pivot axis is effected by actuating means arranged below the disc When the disc rotates the paddle is resiliently advanced through the material in the silo in a more or less radially extending position depending on the relation between the force imparted to the paddle by the actuating means and the reactive pressure from the contents of the silo The paddle is pivotally mounted as a lever having two arms which are both exposed to the material in the silo The paddle generally takes the form of an arc having a radius of curvature substantially corresponding to the distance of the axis of rotation of the disc from the pivot of the paddle, and is provided with studs or hooks along the leading edge as veiwed in the direction of advancement for improved tearing off of the bulk material in the silo The actuating means consists of a hydraulic cylinder which is in power transmitting connection with a first rotatable shaft on which the paddle is mounted A second shaft which rotates the disc has a bore, which either in itself serves as or contains a conduit for pressurized fluid for communication between a stationary source of pressurized fluid and said hydraulic cylinder

Net and paddle ball game apparatus

Abstract: The game apparatus is adapted for either playing a game similar to ping pong or a game similar to badminton. The apparatus includes a pair of base elements having openings therein to receive the free ends of a resilient plastic rod. The rod is flexed into an arch shape with the ends inserted in the openings in the base elements. A ping pong net is stretched between the lower ends of the rod. The apparatus may be used by setting it on a hard floor whereupon game participants, each of whom is provided with a paddle, hit a ping pong ball back and forth underneath the arch. Alternately, the apparatus may be set higher by use, for example, of chairs. This provides a setting for playing a game similar to badminton in which the bird is hit back and forth through the arch.

Admixing wood fibres with adhesive - in a chamber having a paddle and to which adhesive is fed through ducts terminating adjacent the paddle blades

Abstract: Wood fibres are mixed with adhesive in a pref. horizontal cylindrical mixing chamber contg. a paddle which comprises an axially extending shaft having radial paddle blades at spaced positions along its length. Adhesive is fed to the mixing chamber through a number of pref. vertical feed ducts arranged so that the spacing between the ducts is slightly greater than the paddle blade thickness so that the blades can pass between the ducts, and the ends of the ducts terminate adjacent the tips of the blades whereby wood fibres are moved axially along the chamber by the blades and are directed into the adhesive flow issuing from the ducts. Pref. each blade has a pointed leading formed on its outer end, and pref. two feed ducts are arranged between adjacent blades.

Tandem wheel supports

Abstract: A concrete laying machine is provided which includes a body, a pair of rear supporting wheel assemblies and a pair of height adjusting devices, each supporting a side of the body in vertically adjustable manner above one of the supporting wheel assemblies. Each of the rear supporting wheel assemblies consists of a tandem wheel system including a major frame pivotally connected to the machine intermediate opposed ends of the major frame and having secondary frames pivotally connected to the major frame on opposite sides of the pivotal connection of the major frame to the vehicle. Wheels are journalled on the secondary frames on each of opposite sides of the pivotal connection thereof to the major frame with all of the wheels being arranged in tandem. Actuating means are provided which are operatively connected to each height adjusting device which can raise or lower a side of the body relative to the wheel supporting it. Power means is provided for propelling the machine and a front wheel assembly is mounted for steering the machine. A hopper or concrete chamber is mounted on the machine and includes an open bottom merging into a rearwardly extending open bottom mold. A paddle wheel assembly is located in the hopper and includes arms which are driven to move in the lower portion of the hopper in an arc toward the open end of the mold. The driven paddle agitates the mixture in the hopper and moves the same therefrom into the open bottom mold compacting the same therein as the machine moves forwardly. The open bottom mold shapes the discharged mixture to a desired cross-sectional configuration determined by the shape of the mold. Sensing means are provided to sense particular deviations from a predetermined relationship and cause the actuating means either to raise or lower the side relative to the wheel assembly supporting that side. Compensating means are also provided to cause other actuating means to be operated to raise or to lower the other side of the body in response to relative movement with respect to the adjacent side of the body.