Abstract: A low-profile locking cap for a threaded filler neck includes a closure member for engaging and closing the neck, a shell providing a hand grip and including a key-actuable lock, and a race disposed for rotation between the shell and closure. The race includes axially inwardly opening pockets, and the closure includes flexible pawl fingers for engaging the pockets to provide a driving connection between the closure and race which is positive in the cap removal direction and torque-limited in the cap advancing direction. The race also includes a set of peripherally spaced, radially inwardly projecting teeth, and the shell is molded to provide a pair of flexible drive fingers for engaging the peripherally spaced and radially inwardly projecting teeth to provide a driving connection between the shell and race which is positive in the cap advancing direction and torque-limited in the cap removal direction for free ratcheting of the cap when it is in position on the filler neck and locked.

Abstract: A safety cover for a door knob is designed to complicate the opening of the door by small children but permits the opening of the door by other persons by proper manipulation of the safety cover. A pair of inner and outer annular cover parts with interengaging fastening formations surround the shank and door knob. A resilient pressure pad is carried by the outer cover part between a flexible wall portion thereof and the front surface of the door knob. The safety cover when turned by a small child rotates freely on the door knob. When a sufficient force is applied to the flexible wall portion of the outer cover part, the resilient pressure pad is urged against the front surface of the door knob to frictionally grip same thus permitting the safety cover to turn the door knob.

Abstract: A device for use with a cap having a rubber plug which is inserted into the mouth of a container and which can be tightened and loosened by the turn of a lever provided thereto. The device comprises a cap cover loosely but undetachably fitted over the cap so as to enclose its lever, and a pin slidably supported by the cap cover for movement into and out of engagement with the cap lever. The pin can be padlocked out of engagement with the cap lever, so that the cap is loosenable by the manual turn of the cap cover only when the padlock is opened to permit the pin to move into engagement with the cap lever.

Abstract: An anti-theft cap for a screwthreaded base. Said cap comprises a plate provided with a tapped aperture complementary to the screwthread of the base, a body journalled on said plate and in which body a lock is mounted. Said lock comprises a catch which, for one position of the lock, is at a distance from the axis of the cap equal to that of a stop integral with said plate, and, for at least one other position of the lock, is at a different distance. Said stop is elastically movable and adapted to move under the action of the catch when the screwing torque transmitted by said catch exceeds a given value.

Abstract: A lockable container spout closure includes a dished, externally threaded main cap adapted for threaded insertion into an internally threaded spout. A secondary cap covers the main cap and is rotatably secured thereto. A key-operable lock is mounted in the secondary cap and includes a fixed cylinder disposed in a cavity defined by the main and secondary caps. A key-rotatable barrel is located centrally in the cylinder and has a cam fixed to an end thereof and operable in response to rotation of the barrel between lock and unlock positions to shift a lock member between a first position wherein it will clear a stop projecting from the main cap upon rotation of the secondary cap, and a second position wherein it will engage the stop to thereby effect rotation of the main cap upon rotation of the secondary cap.

Abstract: A locking, threaded gas cap for vehicle fuel tanks having threaded filler necks, the cap comprising a closure member threaded to engage and close the filler neck and an outer shell member mounted on the closure member for relative rotation to provide a hand grip. The closure member provides a plurality of abutments spaced peripherally about its axis while the shell member provides at least one yieldably movable drive finger extending radially outwardly into engagement with the abutments. The shell member provides a first stop for preventing movement of the drive finger out of engagement with the abutments when the shell member is rotated in one direction to thread the closure member onto the filler neck. The shell member provides a second stop having an operative position for preventing movement of the drive finger out of engagement with the abutments when the shell member is rotated in the opposite direction to remove the closure member.

Abstract: A locking gas cap for a threaded filler neck having a sealing lip extending peripherally about its axis, the cap comprising a closure member threaded to engage and close the filler neck, a gasket on the closure member for engaging and sealing against the lip, an outer shell providing a hand grip secured to the closure member for rotation thereon, a key-operated lock and at least one locking member movable by the lock connected to the shell for rotation therewith. A race is disposed for rotation in the shell, and a driving connection is provided between the race and the closure member which is torque limited in the direction which advances the closure member on the filler neck and positive in the opposite direction, the locking member being movable into and out of engagement with the race selectively to provide a driving connection between the shell and the race.

Abstract: A lock assembly useful in coupling a tire assembly to a wheel which is locked and unlocked by a magnetic key.