A locking device includes a shackle member and a key operable locking head that may be fastened onto a latch portion of the shackle member. The locking head has a housing and a rotatable retainer and a lock core in the interior of the housing. The lock core is mechanically coupled to the retainer, and both the retainer and the lock core are axially oriented with respect to an axial opening in the housing. The latch portion is axially insertable through the axial opening when the lock core is in an unlocked state and has a latch head which becomes fastened by the locking head when the retainer is rotated by the lock core into a locked state. A seal is supported by the housing proximately to the axial opening and acts to seal against a seal surface on the latch portion. The shackle member can be a linear portion with a stop portion, such as a knob, or alternatively, a cable member. The latch portion preferably has both a first profile that engages the axial opening to prevent relative rotation of the shackle member and the locking head and a second profile that extends through an aperture in the retainer. The first and second profiles are geometrically similar. A limit stop prevents rotation of the retainer through more than a selected arc.
An improved lock for a trailer enables a latch bolt to be inserted conveniently, and allows locking and unlocking operations be done easily. The lock mainly consists of a latch bar and a lock member. The lock member includes a latch sleeve, a lock ring, a connection shaft and a lock core. The lock may be easily locked or unlocked by turning a key for 90.degree..
A hitch and lock device for coupling a trailer to a vehicle includes a lock rod engaged through the elements from the vehicle and the trailer, and a lock device engaged with the lock rod to secure the elements together. The lock device may be quickly engaged onto the lock rod to lock the lock rod to the elements and to solidly secure the trailer to the vehicle. The lock device includes a latch slidably received in a housing, and a spring biasing the latch to engage with the lock rod, and an actuator actuated by a core with a key to disengage the latch from the rod against the spring.
A coupling lock comprising a lock base having a hole includes a core member received in the hole of the lock base and a core plug at an end thereof running out of the hole of the lock base. A driving member, having two driving portions at opposite ends thereof, is coupled with the core member at the distal end of the plug. A locking assembly has two locking and two elastic members. Each of the locking members has two lateral ends pivoted on the lock base, and a hooking portion. The elastic members have ends fixed on the base and other ends resting against the locking members. A housing has a stepped central hole receiving and securing the core in a larger section thereof, and a locking plug inserted into a small section of the center hole of the housing and an annular locking slot receiving the hooking portions.
A trailer lock comprises a rocket bolt, a lock body, and a chain couple. The inner side of the fixed end in the rocket bolt and one of the lock bodies individually has a mounting segment for matching a chain couple with a two-end mounting part and its connection. By the winch design of the chain, it can winch the carrying goods such as bicycle of the supporting base in the end of the car for achieving anti-theft purpose on carrying goods.
A receiver lock for a trailer box hitch designed to secure a ball mount in place and protect it from unauthorized removal. The receiver lock consists of a solid metallic cylindrical pin (20) with a head (28) on one end and round end (40) on the other end. The pin includes a body (22) with a notched recess (32) essentially adjacent to the head with a bore (38) running through the head and body communicating with the recess. A cam lobe (42) is located within the recess and has a shape that conforms to the body when in an unlocked position, and extends above the body when locked. A circular keyway lock (48) is placed in the bore in the head and held captive with a set screw (50). A hexagonal lock connecting rod (56) joins the cam lobe to the lock through the bore. The invention functions by using the principle that when the lock is in the unlocked position the cam lobe is flush with the outside surface of the pin and insertable in the existing holes through both the box hitch and ball mount, and when in a locked position the cam is extended above the pin interfacing with the inside wall of the ball mount, thereby denying removal of the receiver lock and correspondingly the ball mount from the hitch.
