Non-handed door latch for passage and privacy functions
AssigneeSchlage Lock Company LLC
InventorJaime Galindo
Life of this patent
Estimating the term…
Abstract
A door latch for passage and privacy applications provides capability for non-handed installation as well as independent bolt operating cams which may be selectively locked or may be unlocked by retraction of the bolt or by pushing the bolt inward when the door is closed. The latch also provides for removal of the bolt from the latch assembly when the faceplate is not attached. Dual backset capability is provided by means of telescopic forward housings and bolt-to-drawbar assemblies which may be placed in two indexable positions to adjust the length.
Claims15
A door latch for passage and privacy applications, providing non-handed installation capability, comprising:
- a latch housing having a rear portion and a forward portion, said forward portion having means for attaching a face plate;
- a bolt and drawbar assembly;
- two independent cams mounted in said rear portion of said housing for independently operating said drawbar and bolt assembly;
- means for locking either of said two independent cams, said means for locking comprising a locking plate having a locking tongue and capable of moving transversely within said housing to bring said locking tongue into engagement with a slot on either of said independent cams;
- and
- means for biasing said bolt and drawbar assembly to an extended position relative to said housing.
A door latch for passage and privacy applications, providing dual backset non-handed installation capability, comprising:
- a latch housing having a rear portion and a forward portion, said forward portion having means for attaching a face plate and having an outer housing and inner housing, said inner housing nesting indexably and telescopically within said outer housing;
- a bolt and drawbar assembly having means for selectively adjusting the bolt and drawbar assembly to one of two desired lengths, said means for adjusting comprising a shaped slot on a forward surface of said drawbar, said slot permitting a congruently shaped boss of said bolt, when rotated to a first position, to be moved in an axial direction with respect to said drawbar such that said shaped slot of said drawbar engages a circumferential groove in one of two indexable positions;
- two independent cams mounted in said rear portion of said housing for independently operating said drawbar to extend and retract said bolt and drawbar assembly;
- means for locking either of said two independent cams;
- and
- means for biasing said bolt and drawbar assembly to an extended position relative to said housing.
Dependencies are inferred from the claim text.