Multiple point door locking system
AssigneeHanchett Entry Systems, Inc.
InventorAlan K. Uyeda
Life of this patent
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Abstract
A door lock system comprising a first rotary configured to control extension and retraction of the deadbolt via a primary cam mechanism; a second rotary control configured to control extension and retraction of the latch; and a link configured to retract the deadbolt in response to operation of the second rotary control when the latch is retracted by the second rotary control. The link is configured to move along a linear path normal to the movement of the deadbolt and the door latch and to contact the primary cam mechanism upon the link movement to affect deadbolt retraction and extension. A lever may be used to retract the latch in response to rotation of the first rotary control in a first rotational direction when the deadbolt is retracted by the first rotary control.
Claims8
A door lock system, comprising:
- a) a frame having a first side and a second side opposite said first side;
- b) a deadbolt and a door latch connected to said frame configured to move between retracted and extended positions;
- c) a first rotary control connected to said frame, said first rotary control having a first axis of rotation and configured to control deadbolt movement between extended and retracted positions via a primary cam mechanism rotatable about a second axis of rotation off-spaced from said first axis of rotation and acted upon by said first rotary control, wherein said primary cam mechanism includes a split two piece cam having first and second pieces each separately rotatable about said second axis of rotation, wherein said first piece includes a first actuating arm, and wherein said second piece includes a second actuating arm;
- d) a second rotary control having a third axis of rotation off-spaced from said first and second axes of rotation and configured to control latch movement between extended and retracted positions;
- and
- e) a link configured to positively move said deadbolt to said retracted position in response to operation of said second rotary control when said latch is moved toward said retracted position by said second rotary control, as effected via a rotary input to said second rotary control from one of said first or second sides of said frame,
- wherein, upon rotary input to said second rotary control, said link is configured to move along a linear path normal to said movement of said deadbolt and said door latch and to contact said primary cam mechanism upon said link movement to affect movement of said deadbolt between said retracted and said extended positions.
Dependencies are inferred from the claim text.