초록 ▼

A lockset suitable for use on doors of different thicknesses comprises inside and outside knobs mounted on inside and outside spindles which are in turn rotatably supported in inside and outside chassis. Rotation of either knob causes rotation of a rectangular driver spindle to drive a latch operati

A lockset suitable for use on doors of different thicknesses comprises inside and outside knobs mounted on inside and outside spindles which are in turn rotatably supported in inside and outside chassis. Rotation of either knob causes rotation of a rectangular driver spindle to drive a latch operating assembly which retracts a latchbolt. Locking may be accomplished only by pressing a push button located in the inside knob. In one embodiment the push button drives a caliper spring to engage and axially move a plunger bar and in a second embodiment a hook spring carried on the push button engages teeth on the plunger bar. Axial movement of the plunger bar actuates a clutch mechanism to disconnect the outside knob from the driver spindle and lock the outside knob to the outside chassis to prevent rotation of the knob. In the first embodiment unlocking is accomplished by rotating the plunger bar relative to a coupler having a spring thereon for engaging notches on the plunger bar. The unlocking may be accomplished with a key from the outside or by turning the inside knob. In the second embodiment unlocking is accomplished from the inside by turning a knob to rotate the plunger bar and from the outside unlocking is accomplished by turning a key to rotate the coupler. Both embodiments may be mounted on doors of various thicknesses without any adjustment prior to mounting. The second embodiment permits hands free installation.

대표청구항 ▼

A lockset for a door, said lockset comprising: an outside chassis and an inside chassis; an outside spindle and an inside spindle, said outside spindle and said inside spindle being mounted in said outside chassis and said inside chassis, respectively, for rotation about a common axis; a hollow driv

A lockset for a door, said lockset comprising: an outside chassis and an inside chassis; an outside spindle and an inside spindle, said outside spindle and said inside spindle being mounted in said outside chassis and said inside chassis, respectively, for rotation about a common axis; a hollow driver spindle rotatable about said axis for driving a latch operating assembly; a locking slide movable along said axis between an unlocked position in which said locking slide connects said outside spindle in driving relationship with said driver spindle and a locked position wherein said outside spindle is disconnected from said driver spindle; a plunger bar having a rectangular section, said plunger bar being movable along said axis between a first position and a second position, said plunger bar extending through said driver spindle and having a first end portion extending into said outside spindle and at least one notch located in said first end portion; a push button coupled to said plunger bar for moving said plunger bar from said first position to said second position as a manual force is applied to said push button; means for moving said locking slide from said unlocked position to said locked position as said plunger bar is moved from said first position to said second position; latching means for holding said plunger bar in said second position after the manual pressure is removed from said push button, said latching means including a coupler movably disposed in said outside spindle and a hook spring mounted on said coupler for movement therewith, said hook spring having a leg engaging said notch; means for unlatching said latching means to permit movement of said plunger bar to said first position; and, a return spring for moving said plunger bar from said second position to said first position when said latching means is unlatched, said return spring also moving said locking slide from said locked position to said unlocked position.