Showing papers on "Guard (information security) published in 1990"

Dental night guard

Abstract: A dental guard is provided with a two layer construction wherein a soft layer is bonded to a hard layer. The soft layer makes contact with the user's upper set of teeth while the hard layer forms the exterior of the dental guard. The soft layer provides a dental guard which is comfortable to wear and less stressful on the user's teeth while the hard layer provides the desired durability.

Environmental radio guard

Abstract: A protective cover (20) for a communication device (10) comprises a protective layer having a shape closely resembling the shape of said communication device (10) to closely contour to said communication device (10).

Surgical scalpel with retractable blade guard

Abstract: A scalpel is provided with a blade guard which is mounted for movement between a blade-guarded position and a blade-exposed position and an actuating mechanism for the blade guard is positioned in such a way that the fingers of the surgeon automatically engage the mechanism when the scalpel is held in its normal position of use. The actuating mechanism is coupled to the blade guard through a linkage assembly which causes the blade guard to move over a substantially greater distance than the distance which the surgeon's fingers move in operating the actuating mechanism. In a preferred embodiment, the blade guard slides over a linear path, the actuating mechanism comprises a tongue-like structure integral with the scalpel, and the linkage assembly comprises a plurality of pivotally interconnected lever arms. One of the lever arms is positioned so as to be captured in a detent mechanism when the blade guard is fully retracted to its blade-exposed position.

Avoiding edge effects in agroforestry experiments; the use of neighbour-balanced designs and guard areas

Abstract: A number of different types of edge effects on experimental plots are defined, and it is shown that they are frequently important in agroforestry experiments. Methods of eliminating edge effects, either at the design or the analysis stage, are described. Computer simulations, based on uniformity data, are used to investigate the efficacy of neighbour-balanced designs, with and without neighbour terms, for reducing the problem of neighbour effects between different treatments. It is concluded that, while neighbour-balanced designs may be useful in certain situations or in combination with other methods, it is preferable to eliminate edge effects by using adequate guard rows. Recommendations are therefore made concerning the correct use of guard areas in agroforestry experimentation.

Whip type weed cutter

Abstract: A cutter attachment for a mono-filament type trimmer implement including a trimmer support shaft and a cutter in the form of a rotatable mono-filament used for lawn trimming mounted at a free end thereof. The cutter attachment has a base secured to the trimmer support shaft above the cutter. An elongated swingable rod shaped guard has a closed guard end and a pair of free ends positioned in adjacency to the base. An attachment device joins the free ends of the guard to the base enabling the elongated swingable rod shaped guard to be swung from a "storage position" where the closed end of the guard rests on and overlies the shaft in a "guard position" where the closed guard end overlies the cutter for protecting shrubs, trees and the like. The guard is a triangularly shaped open ended rod that is secured by the attachment device to a conventional commercial type whip type weed cutter.

Machine proximity sensor.

Abstract: A proximity sensor is provided for a machine which has a perimeter guard around the periphery of the frame of the machine. The machine has at least a moving part moved by the drive and with a control circuit to control the drive. The perimeter guard includes a radiation transmitter to project a radiation beam at least part of which extends outside the periphery. The perimeter guard further has movable mirrors and a movable bumper which, when moved, inhibit a radiation receiver from receiving the radiation beam. In this case, an output indication is generated to control the drive and stop the machine part. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation of applications, and is not to be construed as a limitation on the scope of the claimed subject matter.

On the Rectilinear Art Gallery Problem - Algorithmic Aspects

Abstract: We investigate the watchman problem for rectilinear art galleries with an arbitrary number of holes. An efficient algorithm for the placement of the guards with running time O(n3/2 log2n log log n) is presented. Each guard has to watch an r-star of constant size.

Fused hermetic terminal assembly including a pin guard and lead wire end connection securing device associated therewith

Abstract: A hermetic terminal assembly for a housing including a fuse-like area positioned in the outer pin segment of a terminal pin extending in sealed relation through the body member of the terminal assembly which body member can be sealed to a housing wall, the fuse-like area in the outer pin segment being covered with a thermally decomposable coating which in the event of decomposition includes an arc suppressant. A pin guard and lead wire end connection securing device is provided to protect the outer pin segment and to secure the lead wire end connection thereto.

Safety guard apparatus

Abstract: A safety guard apparatus for use on a pitched roof includes two or more units having a first member attached to a roof member and second and third members serving as an upright guard rail support. A distal end of the first member has fixed thereto a tubular collar having an axis at a right angle to the first member, and a fourth rigid elongate member is adjustably slidably fitted through the collar so that a lower end thereof may abut a vertical wall below the roof to support the apparatus above the roof.

Trilateral gutter guard

Abstract: A trilateral gutter guard includes first and second angled legs adapted to rest at different locations on a gutter bottom. A substantially horizontal leg is coupled to the top of the first and second legs, the three legs each comprising a mesh. Preferably, the horizontal leg is positioned and dimensioned to allow self-cleaning of the gutter guard by natural forces.

Safety core cutting knife

Abstract: A knife for cutting honeycomb core and other materials with a combination of safety features to prevent or minimize injury to operator. The blade used has a hole through which a fastening device e.g. threaded screw, locks it to a handgrip. A safety guard covers the blade when not in use and automatically retracts as the blade is removed from the workpiece. The guard cannot be accidently displaced from the blade. It must be purposely unlocked by a manually triggered self-locking release assembly located in the handgrip which also automatically relocks the safety guard when retracted. The safety features consist of an automatically retractable guard attached to a safety handshield working in conjunction with the safety self-locking release assembly to prevent accidental release. Embodiments include (1) wherein the guard is opaque and has viewing ports and is hinged mechanically with springs, supports, and spacers, (2) wherein the guard is transparent eliminating the need for viewing ports, (3) wherein the guard and many other metal components are comprised of plastic, (4) wherein the guard is transparent and is hinged by an integrally molded component, (5) wherein the guard is hinged by a combination of mechanical (1) and integrally molded (4) means and (6) wherein a disposable blade is used.

Combination gun rack and dog guard

Abstract: A mounting rack for rifles which is substantially rectangular and is mounted across the vehicle, which is adjustable in length as well as height to fit substantially any vehicle. The two upright sides of the rectangle, slide on the two long cross members for further adjustment and the gun cradles have multiple positions. The invention further discloses a dog guard which may be affixed to the back of the gun rack.

Trigger guard retainer

Abstract: A holster for a handgun having a trigger guard is formed of material such as leather which is folded upon itself to make a pocket, with an opening at the top. The edges of the material are sewn together with a narrow strip of the material therebetween to increase the volume of the pocket. A pair of openings are located on opposite sides of the pocket adjacent the position of the trigger guard when the handgun is in the pocket. A latch member of low friction material having resilient arms and clamp members with inwardly extending projections is fastened in the holster such that the arms and clamp members extend through the openings. When the handgun is placed in the holster, the trigger guard pushes past the projections on the clamp members which then latch around the trigger guard securing the handgun in the holster.

Fail safe composite hypodermic syringe with reversible needle and guard assembly

Abstract: A disposable hypodermic syringe with collapsible plunger has a needle guard filled with a disinfectant-saturated media. The guard is threadably-reversibly mountable, end-for-end, on a distal end of the syringe barrel.

Protective guard member

Abstract: A protective guard member is provided and consists of an elongated body structure formed of a resilient deformable material sized to cover and cushion a sharp corner on a wall, piece of furniture and the like. The elongated body structure is secured in place about the sharp corner so that if a child falls towards the sharp corner the body structure will prevent injury to the child.

Integral safety helmet

Abstract: An integral safety helmet is described in which a chin guard can be folded up. For the release of the chin guard, a central opening bar is provided on the front side of the chin guard. As a result, the locking mechanism can easily be opened by only one hand or by the thumb of the motorcyclist. In certain embodiments, the opening bar is designed as a two-armed lever having an upper arm and a lower lever arm. In this manner, the chin piece can be released in two different manners.

Prop-saver (propeller guard device)

Abstract: Disclosed herein is a propeller guard device, including a laterally extending fin and a vertical extension, or sleeve The fin and sleeve could be manufactured as a singular item The vertical sleeve is attached to the midline area of the fin, with the leading edge of the sleeve being generally co-terminus with the leading edge of the fin The fin is at least as wide as the rotational path of the propeller blades The singular fin extends laterally on either side of the sleeve in a generally coplanar relationship The leading edge of the fin is elevated from three to five degrees higher than the trailing edge of the fin The trailing edge of the fin is located forwardly of the rotational path of the propeller blades, or is lengthened and extends towards the rear of the device to the extent of being even with the midline of the rotational path of the propeller blades

A tear-edge guard

Abstract: A guard intended to prevent hand-injuries against tear-­bars has an elongated form (6) and extends parallel with a tear-edge and is moveable in a direction transversal to its longitudinal axis. The guard (6) has a length equal to the length of the tear-bar (2). The guard (6) is guided in a gap (5) defined between a strip-like (4) front side of the tear-bar (2) and an inwardly angled part of the wall (1) of the casing intended to accom­modate, for instance, a paper-roll holder incorporating the tear-bar (2). For the purpose of limiting movement of the guard (6) between an outer active guard position and an inner inactive position, in which the tear-edge of the tear-bar (2) is exposed, there is provided along the guard (6) a rib (8) which abuts the free edge of the strip-like front side of the tear-bar in the outer position of the guard. The guard is displaced to its inner position in the gap (5) by the material web (P) when severing the paper-web against the tear-bar (2).

Guard members for preventing shifting cargo from interfering with the operation of a roll-up door

Abstract: This invention provides two forms of improved guards for a roll-up door. The first form ( 58 or 59) is intended to prevent shifting cargo from intefering with becoming interlocked with the lowered door. This form has a vertically-elongated guard which is adapted to overlie the vertically-spaced hinges, and has opposite marginal end portions closely spaced to the knuckle portions of such hinges. This first form reduces the stepped configuration of prior art hinges, and therefore reduces the opportunity for shifting cargo to become interlocked with the door. The second form (111) is mounted on the door and track, and is designed to prevent shifting cargo from entering the space through which the door must pass as it its raised or lowered.

Furniture guard with exhaust slots

Abstract: A vacuum cleaner is provided with a furniture guard that extends around at least a portion of the cleaner. The furniture guard is slotted so as to provide for outward ventilation of cleaner air.

Track guiding guard

Abstract: A track guiding guard for a crawler type vehicle which is mounted along the lower side of a track frame is disclosed. The track guiding guard comprises a pair of left and right guard members which rotatably support track rollers. Each guard member has a slanted bottom surface which defines a limit angle of inclination between the same and the upper surfaces of track shoes that face the bottom surface, the angle diverging laterally outward. Each guard member further defines a predetermined gap between the inner side surface of the lower end thereof and the outer ends of track pins that face the inner side surface. The gap is so set that when the bottom surface of the guard member is seated on the upper surfaces of the track shoes, the inner side surface of the lower end of the guard member substantially comes into contact with the outer ends of the track pins. Thus, the inclination of the vehicle is stably supported by the seating of the bottom surface of the guard member on the upper surfaces of the track shoes and the contact between the inner surface of the lower end of the guard member and the outer ends of the track pins.

ATV guard apparatus

Abstract: An apparatus defining a generally "U" shaped convex structure mounted to an all-terrain vehicle, wherein the structure includes a wire grid mounted to a bottom "L" shaped framework, and the framework is provided with a rearwardly extending mounting bar for securement to an associated all-terrain vehicle. A modification of the invention includes a further guard securable to the guard during periods of non-use and mounted for extension relative thereto providing longitudinal adjustment as required.

Seed guard for bird cages

Abstract: A seed guard that is detachably securable to any bird cage and which deflects thrown seeds back into the cage. The guard includes as many flat, cuttable sheets as there are sides to the cage. The opposite ends of each cuttable sheet are engaged by corner members that are detachably secured to the corner bars of the cage. The seed guard is provided in kit form so that the cage owner may assemble the corner members, attach them to the cage, cut the guard members to size, and slide the guard members into position by inserting the opposite ends of the guard members into detents provided by the corner members.

Single frequency radio transmission system

Abstract: A radio transmission system designed to operated on a single defined frequency channel. The system comprises a central receiver (12), at least one transmitter (14) remote from the receiver and a plurality of repeaters (13) arranged in zones (Z1 to Zn) arround the receiver. Each repeater can receive a signal from a transmitter and re-transmit the message so that it eventually reaches the receiver by way of one or more repeaters. The system includes protection means for protecting the message against loss or corruption, for example by using unique time delays before re-transmission or by addressing a certain sequence of repeaters with alternate paths being provided to guard against the message being lost.