Patent ID: 6491327
Filing Date: 2002-12-10
Classification: E05B,Y10T

Abstract:
A door lever handle assembly adapted to be mounted on a door panel having an outer side, an inner side, and a lateral connecting side interconnecting the outer and inner sides, said door lever handle assembly comprising:an outside lever handle unit including an outside mounting cap adapted to be mounted on the outer side of the door panel, and an outside lever handle having a coupling end coupled rotatably to said outside mounting cap; an inside lever handle unit including an inside mounting cap adapted to be mounted on the inner side of the door panel, and an inside lever handle having a coupling end coupled rotatably to said inside mounting cap; a latch bolt mechanism adapted to be mounted inside the door panel and including a latch bolt that is movable between an extended position, where the latch bolt is adapted to project from the connecting side of the door panel, and a retracted position, where the latch bolt is adapted to retract into the door panel, and a spindle operably coupled to said latch bolt such that axial rotation of said spindle results in movement of said latch bolt between the extended and retracted positions, said spindle having opposite ends coupled respectively and non-rotatably to said coupling ends of said outside and inside lever handles such that operation of either one of said outside and inside lever handles can result in movement of said latch bolt from the extended position to the retracted position; and a restoring mechanism including a force transmitting member provided on said spindle and having left and right actuating parts, a sliding seat mounted slidably on one of said outside and inside mounting caps, and having left and right force bearing parts disposed respectively adjacent to said left and right actuating parts, and a biasing unit for biasing said sliding seat toward said force transmitting member such that said left and right force bearing parts abut against said left and right actuating parts at the same time; wherein operation of one of said outside and inside lever handles for moving said latch bolt from the extended position to the retracted position causes one of said left and right actuating parts to disengage the respective one of said left and right force bearing parts, and further causes the other of said left and right actuating parts to push the respective one of said left and right force bearing parts against action of said biasing unit, thereby storing a restoring force in said biasing unit.