Door lock set with simultaneously retractable deadbolt and latch
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 7, 1992
Grant Date -
N/A
app pub date -
May 28, 1991
filing date -
May 28, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A door lock includes a driving cam secured to a first spindle operatively retracting a latch, a follower cam secured to a second spindle operatively retracting a dead bolt and a linking rod having a first pin formed on a rod end pivotally connected with a cam protrusion formed on the driving cam and having a second pin formed on the other rod end slidably moving in an arcuate slot in the follower cam, whereby upon a rotation of an inside knob for rotating the driving cam for retracting the latch, the linking rod will be biased to pull the follower cam for rotating the follower cam to retract the dead bolt for simultaneously retracting both the deadbolt and the latch for opening a door smoothly, quickly and safely.
First Claim
Other Claims data not available