US 3,984,136 A · Lock for sliding doors

Abstract

A sliding door comprising a first door, a second door mounted for sliding movement relative to the first door, and a lock assembly mounted on the second door. The lock assembly comprises a housing having an inner wall and an outer wall and side walls. The housing is mounted on the second door with the one side wall engaging the frame of the second door, the inner wall has an opening therein and a plunger is movable through the opening. The first door has at least one opening therein engageable by the plunger. The plunger is rotatably mounted within the housing for movement axially and rotatably. An annular surface is provided concentrically with the plunger and is movable therewith. A cam is supported within the housing for movement into and out of engagement with the annular surface such that when the cam is moved into engagement with the annular surface, the plunger is moved axially through the outer wall into the opening in the front door. A handle is associated with the cam externally of the housing for manipulating the cam.

Claims17

Dependent claims

In a sliding door, the combination comprising

a first door having a frame,
a second door having a frame,
means for mounting said second door for sliding movement relative to said first door,
and a lock assembly mounted on said second door,
said lock assembly comprising a housing having an inner wall, an outer wall and side walls,
means for mounting said housing on the said second door with the one side wall engaging the frame of the second door,
said inner wall having an opening therein,
a plunger movable through said opening,
said first door having at least one opening therein engageable with said plunger,
means for rotatably mounting said plunger within said housing for movement axially and rotatably,
means defining an annular surface concentric with said plunger and movable therewith,
a cam,
means for supporting said cam within said housing for movement into and out of engagement with the annular surface such that when the cam is moved into engagement with the annular surface, the plunger is rotated and is moved axially through the outer wall into the opening in the first door,
and means associated with said cam and extending externally of said housing to provide a handle for manipulating said cam.

11 more elements

Dependencies are inferred from the claim text.

Lock for sliding doors

Life of this patent

Lock for sliding doors

Life of this patent

Abstract

Claims17