Abstract: A chain door lock includes first part attached to a door adjacent the free edge of the door, a second part attached to the door jamb, and a chain attached to the second part and removably attached to the first part. The first part includes a horizontal spring chamber, a slide element within the spring chamber, a chain holder attached to the slide element, and a shock-absorbing coil spring between the slide element and the spring chamber. The second part includes a leaf spring. The chain is sufficiently long that the door may be partially opened without compressing either spring. The coil spring is sized to absorb a substantial impact, as from the body of a would-be intruder.

Abstract: A carburetor improvement for connecting a link (R) to a movable carburetor part (L3) so the connection is tamper resistant. A swivel (3) has a longitudinal bore (5) extending substantially therethrough and a transverse bore (7) through which the link extends. A clevis (13) comprises a pin (15) insertable through an opening (O) in the movable part. The pin has a head (17) and the diameter of the pin is equal to the diameter of the longitudinal bore in the swivel for the pin to be inserted into the bore. The end of the pin inserted thereinto has a generally U-shaped opening (19) at its end, the length of the opening being greater than the diameter of the link and the width of the opening being equal thereto. The inner end of the longitudinal bore has a decreasing diameter whereby the sidewalls (21) of the U-shaped portion of the pin are pinched together and press against the body of the link to capture the link in the swivel with sufficient force to prevent adjustment of the link.

Abstract: A lock mechanism that is particularly adapted for use on automobile trunks which comprises a lock cylinder, an actuating member, a latch assembly, and a spring type tension member. When substantial force is applied to the face of the lock cylinder the lock cylinder and actuating member swing away from the force and render the lock mechanism inoperative. Upon withdrawal of the force the lock cylinder and actuating member return to their original position to allow the lock mechanism to function normally. To prevent the lock cylinder from being pulled out the cylinder face is recessed within the wall of the trunk.An alternative embodiment provides for the entire lock mechanism to pivot away when a force is applied.

Abstract: A solenoid actuated device to permit a carburetor throttle valve to close below the curb idle position upon deactivation of an ignition system for an internal combustion engine and to prevent electrical grounding by the device when it is out of contact with the throttle arm. The solenoid actuated device has an armature mounted in a housing for movement between energized and deenergized positions and a shaft extending through the housing is mounted within the bore of the armature for movement therewith. The shaft is in contact with the throttle arm adjacent one end and an electrical lead extends from the other end of the shaft. An insulating sleeve is positioned between the shaft and armature to prevent electrical grounding of the shaft when the shaft is out of electrical contact with the throttle arm. The insulating sleeve and shaft therein may be adjusted longitudinally relative to the armature to control the position of the throttle arm.