Box hitch receiver lock
First Claim
1. A trailer box hitch receiver lock for securing a ball mount in a trailer receiver hitch comprising:
- a) a solid pin having a cylindrical body with a first end and a second end with the first end having an integral head, said pin further having a notched recess in the body and a bore through the head and body communicating with the recess, with said bore enlarged through the head, b) an eccentric cam lobe, disposed within the recess having a shape conforming to the pin cylindrical body in an unlocked position and extending above the pin when rotated into a locked position, c) a high security circular keyway lock disposed completely within the enlarged portion of the bore in the head of the pin, and d) a lock connecting rod joining the eccentric cam lobe to the lock through the bore such that when the lock is in the unlocked position the cam lobe is flush with an outside surface of the pin and in a locked position the cam lobe is extended above the pin on an inside wall of the ball mount within the receiver hitch denying removal of the receiver lock and correspondingly the ball mount from the hitch wherein said head of the cylindrical pin is eccentric with the bore that receives the lock and the connecting rod.
3 Assignments
0 Petitions
Accused Products
Abstract
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.
33 Citations
14 Claims
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1. A trailer box hitch receiver lock for securing a ball mount in a trailer receiver hitch comprising:
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a) a solid pin having a cylindrical body with a first end and a second end with the first end having an integral head, said pin further having a notched recess in the body and a bore through the head and body communicating with the recess, with said bore enlarged through the head, b) an eccentric cam lobe, disposed within the recess having a shape conforming to the pin cylindrical body in an unlocked position and extending above the pin when rotated into a locked position, c) a high security circular keyway lock disposed completely within the enlarged portion of the bore in the head of the pin, and d) a lock connecting rod joining the eccentric cam lobe to the lock through the bore such that when the lock is in the unlocked position the cam lobe is flush with an outside surface of the pin and in a locked position the cam lobe is extended above the pin on an inside wall of the ball mount within the receiver hitch denying removal of the receiver lock and correspondingly the ball mount from the hitch wherein said head of the cylindrical pin is eccentric with the bore that receives the lock and the connecting rod. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification