Mortise deadbolt lock cam engagement device
AssigneeLarson Manufacturing Company
InventorMichael W. Kondratuk
Life of this patent
Estimating the term…
Abstract
A stop arrangement for precluding disengagement of a mortise deadbolt lock element by a cam which is employed to extend and retract the element. The arrangement employs first and second stop arms angularly spaced from a cam, which are rotatable, along with the cam, and which engage the lock element to preclude over-rotation.
Claims8
Apparatus for insuring operative engagement of a deadbolt actuation cam with a mortise deadbolt lock element disposed for movement between a retracted position and an extended position, comprising:
- means mounting the cam for rotation about an axis, the cam disposed for rotation between a first circumferential position in which the cam urges a head of the mortise deadbolt lock element such that the mortise deadbolt lock element is in the extended position, and a second circumferential position, spaced angularly from said first circumferential position, in which the cam urges a tail of the mortise deadbolt lock element such that the mortise deadbolt lock element is in the retracted position;
- a first stop arm extending radially from said axis and spaced angularly from the cam at a fixed angle such that, when the cam attains said first circumferential position, said first stop arm engages said tail of the mortise deadbolt lock element to preclude further rotation of the cam in one direction;
- and
- a second stop arm extending radially from said axis and spaced angularly from the cam at a fixed angle such that, when the cam attains said second circumferential position, said second stop arm engages said head of the mortise deadbolt lock element to preclude further rotation of the cam in an opposite direction.
Apparatus to facilitate operative engagement of a deadbolt actuation cam with a mortise deadbolt lock element disposed for movement between a retracted position and an extended position, comprising:
- means mounting the cam for rotation about an axis, the cam disposed for rotation between a first circumferential position in which the cam urges a head of the mortise deadbolt lock element such that the mortise deadbolt lock element is in the extended position, and a second circumferential position, spaced angularly from said first circumferential position, in which the cam urges a tail of the mortise deadbolt lock element such that the mortise deadbolt lock element is in the retracted position;
- and
- a first stop arm extending radially from said axis and spaced angularly from the cam at a fixed angle such that, when the cam attains said first circumferential position, said first stop arm engages said tail of the mortise deadbolt lock element to preclude further rotation of the cam in a direction in which it moves to urge the mortise deadbolt lock element into the extended position.
Dependencies are inferred from the claim text.