Patent ID: 6341509
Filing Date: 2002-01-29
Classification: E05B,Y10S,Y10T

Abstract:
A U-lock comprising:(a) a shackle having two legs that are provided with configured feet; (b) a straight crossbar having openings for receiving said feet, said crossbar having an axis and said openings having axes, said axes of said openings being substantially orthogonal with respect to said axis of said crossbar; (c) at least a spring pressed deadbolt within said crossbar for mating with at least one of said configured feet, said deadbolt being reciprocable along said axis of said crossbar; (d) a lock mechanism having a barrel providing a keyway and being located in a seat in said crossbar for controlling said deadbolt, said crossbar having an opening for providing access to said barrel, said last mentioned opening and said barrel lying along an axis that is substantially orthogonal to said axis of said crossbar; and (e) a sleeve about said crossbar with an aperture that is sufficiently small to enable retention of said barrel within the seat and sufficiently large to permit access by a key to said keyway; (f) said sleeve being slideable paraxially along said crossbar, when said shackle is disengaged from said crossbar, between a secured position at which said aperture is aligned with said barrel and an unsecured position at which said sleeve is removed from said barrel, said barrel being removable from said seat when said sleeve is in said unsecured position; (g) said crossbar having a pair of relatively large retaining holes and a pair of relatively small pilot holes, said pair of retaining holes and said pair of pilot holes being respectively aligned.