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4666106 |
Aircraft door locking device
A device for securing an opposing pair of outwardly opening cabin doors on general aviation aircraft and the like. A pair of non-extensible elongated elements, such as a pair of rods or a rod and a...
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4655057 |
Security device for a video cassette recorder or the like
A deterrent device for inhibiting unauthorized use and sale of a video cassette recorder having a cassette chamber provided with a chamber opening and a hinged door normally closing said chamber...
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4656551 |
Safety arrangement for cassette recorders and/or playback apparatus
The invention relates to an arrrangement for preventing unauthorized use of a playback apparatus (10,32) such as a cassette-player or a video reproduction device including a dummy cassette (12,13...
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4640106 |
Device for preventing unauthorized use of a cassette tape deck
A device for inhibiting use of a cassette deck having a cassette chamber accessible through a chamber opening in which the device includes an elongated flat body member having a length, width and...
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4617810 |
Sliding glass door lock
A sliding glass door lock having a ratchet locking bar fastened to one sliding door, and a locking mechanism having a housing forming an abutment engaging the other sliding door. A window is formed...
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4616490 |
Locking apparatus for discouraging theft of tape cassette players
A tape cassette player locking mechanism which comprises a container of the general configuration of a cassette adapted to be inserted into the player and including a locking mechanism preventing...
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4592578 |
Lockable gate latch
A positive gate latch having a striker bar and two vertical catch members held in place by two sleeves secured to a base. When the catch members are down, the striker bar (often referred to as a...
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4570466 |
Door locking methods and apparatus
Methods and apparatus for releasably locking or blocking a door combine a first element with that door for blocking the door in an extended position of that first element and for alternatively...
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4538827 |
Ball hitch trailer lock
Anti-theft apparatus for protecting an uncoupled trailer, including a portion mountable within the ball receiving end of a trailer and also including a U-shaped member and a draw bar insertable...
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4527405 |
Security lock for cassette recorders and cassette players or theft discouragement device for cassette recorders and cassette players
A key-driven mechanism 14 that locks into the cassette-insert opening 12 of an audio/video cassette recorder or cassette player 10. After insertion into the cassette recorder or player, rotation of...
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4506527 |
Vehicle door lock assembly
This door lock assembly has a thin mounting plate which fits snugly against the door post and passes behind the rear edge of the door without interfering with the usual latch on the door. An...
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4488417 |
Anti-theft devices for parked tractor vehicles
Whenever a tractor vehicle of the cab-over-engine type is being parked in a wheels-turned condition, the steering column pitman-arm typically resides in temporary horizontal registry with a...
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4480450 |
Anti-theft device for eyelet type trailer hitches
The eyelet opening of an eyelet-type trailer hitch is intercepted by a plug comprising two cap sections of sufficient size to overlie the opposite ends of the eyelet opening without passing...
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4462233 |
Detachable guard for keyholes
A detachable guard or cover for preventing access to the keyhole of cylinder type locks in the face of a wall or locked door of a tool cabinet is combined with openings in the wall on each side of...
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4459832 |
Trailer hitch lock
A pivotally mounted coupling guard, extending over a ball engaging socket of a trailer hitch to preclude disengagement of the socket from the ball, is locked in place to deter unauthorized...
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4440005 |
Trailer hitch ring lock
Two generally flat, circular plates, one having an attached threaded male cylindrical shaped extension and the other an attached mating threaded female cylindrical shaped extension are threaded...
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4423610 |
Shackle lock
A device for securing a shackle by limiting the rotation of the cross bolt includes means, such as a jamming block, for blocking the path of rotation of the cross bolt's head, and means for holding...
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4409804 |
Vehicle anti-theft locking device
Apparatus for locking a motorcycle or the like which has a first part which rotates during powered movement of the associated motor vehicle and a second discrete part which is disposed proximate to...
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4399672 |
Auxiliary security lock assembly for a door
An auxiliary lock assembly for a door hung in a frame consisting of a plate member having a portion disposed between the door and the door frame and extending inwardly of the door, a plate holding...
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4399893 |
Locking wheel block
A wheel block for dual truck wheels having a pair of wheel ramps and a single center locking member adapted to releasably connect the wheel block to the wheel and tire rim of a vehicle so as to...
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4389862 |
High security locking assembly for lockrods type rear-end closures of cargo vehicles
The prevalent lockrods type rear-end closures for overland cargo carrying vehicles are exceedingly vulnerable to determined thievery. The high security locking assembly of the present invention is...
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4380160 |
Trailer tow locking device
Apparatus for deterring theft of trailers which utilize a tow ring having a central opening and upper and lower annular surfaces. The apparatus assumes the operational position when the upper...
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4376544 |
Tow bar lock
The present proposal comtemplates an anti-theft device for unattended trailers, in the nature of a cover-plate assembly for locking the open end of the trailer tow bar to prevent unauthorized...
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4372136 |
Lock protecting hasp
Lock-protecting hasp for trailer full swing rear doors having locking bars which secures to the bars of the rear doors and includes two mating members and a shackle lock whether the lock be key or...
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4356580 |
Showcase lock for sliding doors
A showcase lock for sliding doors including a keeper plate attached to one door and a lock adjustable along the keeper plate to lock the doors in a closed position. The keeper plate has inwardly...
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4347720 |
Chain lock
A chain lock is disclosed which has an outer sleeve fitting over an inner cylindrical case having a recess for the insertion of a link of a chain. When the case is rotated within the sleeve, a...
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4343161 |
Outboard motor lock
A device for preventing the theft or unauthorized use of an outboard motor, of the type having a remote fuel tank and a detachable fuel line, locks to the fuel line coupling of the outboard motor,...
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4326394 |
Portable door lock
A portable door lock (10) which is releasably coupled to door frame (12) and a door member (14) for positionally constraining the door member (14) to the door frame (12) when the portable door lock...
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4325237 |
Lock plug for glad hand brake line coupler
A lock plug for use with a glad hand coupler of the air brake line of a tractor - trailer. The lock plug is insertable into and held in place locked within the air passage of the glad hand coupler...
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4238940 |
Variation in self securing theft proof chain binder
A self securing theft proof chain binder, such as would be used to cinch a chain tightly holding a cargo to a truck flatbed. The binder has hooks on either of its ends to attach to the ends of the...
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4226103 |
Locking device for glad hand brake line couplers
A locking device engageable in mating relationship with a glad hand brake line coupler of a semi-trailer disconnected from its tractor is disclosed. A depressible lock mechanism supported by a...
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4200317 |
Door fastener
A portable door fastener is disclosed which includes a body of thin, sturdy material which can be inserted between a door and a door jamb and which includes a projection to engage in the jamb latch...
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4190273 |
Cabinet lock assembly
A locking apparatus for use with a cabinet or other structure having double doors separated by a jamb at the point of closure. Two brackets are mounted on either side of the jamb, extending beyond...
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4164131 |
Automobile anti-theft device
An anti-theft device of the type which clamps upon an auto tire for resisting rotation of the tire. The clamp is formed of a pair of pivoting arms which may be manually closed upon opposite sides...
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4131001 |
Method to prevent unauthorized use of cassette tape recorders and a device according to the method
A method and a device to prevent unauthorized use of cassette tape recorders, comprising of a cassette shaped part, insertable into a cassette tape recorder through the cassette opening, said part...
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4085599 |
Padlock adapter assembly
The following specification describes a padlock adapter assembly comprising a pair of identical stamped plates each having a pair of spaced passages aligned with a respective passage in the other...
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4076095 |
Pedal locking device
A locking device for the pedals of a motor vehicle is comprised of a first rigid support with a first rigid bar mounted at one end to the first support and perpendicular thereto. A second rigid bar...
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4068504 |
Bicycle lock
A lock having a pair of jaws and a connecting shaft therebetween turnable in a first direction in response to a locking action of a key to cause the jaws to move inwardly and tightly grip against a...
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4062206 |
Locking load binder
A locking load binder having a conical lock tongue mounted on the handle and a keeper link secured to the yoke on one side of the handle and adapted to cooperate with the lock tongue to secure the...
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4059299 |
Auxiliary portable lock
An auxiliary portable lock which comprises a housing, a lock body receivable within said housing, and adapted for axial rotation therein, said housing being internally communicative with a tubular...
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4057986 |
Self-contained alarm lock
A portable tamperproof and battery-powered alarm device used for locking in place, objects which need to be restrained from theft. The device is ideal for locking bicycles, mini-bikes, motor...
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4057982 |
Theft-deterrent chain locking device
An adjustment control device for a chain. The control device includes a body member having a first orifice for slidably receiving the chain and a second orifice extending crosswise of the first...
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4029370 |
Portable safe
The portable safe includes a base containing means for securing the safe to a support surface and a cover for the base to protect the securing means and valuables therein. A lock is provided to...
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4003227 |
Portable and detachable double casement window opposing turn latch handles lock securing device
A tumbler lock securing device that can be applied to the double casement windows and doors without altering of the casement structure but can be simply detachably placed over opposing window or...
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3982413 |
King pin lock for semi-trailers
This is a lock which can be quickly and easily attached to the locking groove of the king pin of a trailer to block entrance of the king pin into the attaching slot of the "fifth wheel" of a...
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3974668 |
Self securing theft proof chain binder
A self securing theft proof chain binder, such as would be used to tightly cinch a chain tightly holding a cargo to a truck flat bed. The binder has hooks on either of its ends to attach to the...
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3961816 |
Auxiliary door lock
An auxiliary lock comprising a lock body for extension through an opening in the closure to be secured; there being a stop forming element on one end of said lock body for engaging one side portion...
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3953992 |
Bicycle locking device
A bicycle locking device comprising a pair of plates with oppositely extending hooks which engage with the fork of a bicycle. The plates are positioned in abutment with each other, with opposite...
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3939678 |
Telephone locking apparatus
A telephone locking apparatus. The apparatus includes a base plate and keeper plate which cooperatively define jaw means for clamping the apparatus to the handhold shelf of a telephone desk set....
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3931723 |
Lock for sliding closure panels
A lock for locking by-passing type slidable closure panels in a closed position with adjacent ends of the panels in spaced overlapping relation. The lock includes a lock housing mounted on one of...
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