ApplicationNo. 10707528 filed on 12/19/2003
US Classes:70/34, Single stem or shank70/258, Accessories70/462, Reversible structures280/507, Protector or lock24/658, Having closed aperture therethrough alignable with parallel access opening292/148, Padlock or seal catch70/26, Removable70/260, Tire or rim only70/39, Removable70/38A, Both legs engaged70/53, Shackles70/19, Clamps70/14, PORTABLE292/57, Sliding and rotary70/424, Portable70/51, Parts, accessories, attachments and adjuncts70/55, Sheaths292/281, HASPS70/58, For portable articles70/18, Shackles188/69, Positive lock70/259, Spare or mounted wheel or tire211/7, Horizontal rod type280/478.1, Draft element bodily shiftable70/491, Sliding tumblers280/512, Pivoted jaw or retainer280/438.1, Movably mounted280/441, Slidably mounted70/50, With seal70/209, Rotary or swinging70/33Housing extension and cooperating detent
ExaminersPrimary: Gall, Lloyd A.
Attorney, Agent or Firm
Foreign Patent References
International ClassesB60R 25/00
AbstractAn adjustable coupler lock for locking a trailer hitch such that a trailer cannot be removed from a vehicle. The coupler lock comprises a lock body with a locking mechanism and a locking plate, and also comprises a shaft having a narrow and a flange end, and also having multiple recesses along the length of the shaft for engagement with the locking plate of the lock body. The recesses along the length of the shaft have a vertical edge which engages the locking plate such that the lock body cannot be removed from the shaft without unlocking the locking mechanism. The recesses also have a tapered edge that allows for slidable movement of the lock body along the shaft, without unlocking the locking mechanism, for the purpose of adjusting the lock to the size of the latch. The components of the coupler lock are made of stainless steel.
Field of SearchSingle stem or shank
Housing extension and cooperating detent
Long leg engaged
Both legs engaged
Protector or lock
Ball and socket
Pivoted jaw or retainer
Reciprocating jaw or retainer