Deadbolt lock

Claim 2

A deadbolt mechanism for a door having first and second opposed sides, the mechanism comprising: (a) an elongated cylindrical bolt having a first transverse arcuate depression therein; (b) means for guiding the bolt in the door between the first and second sides, the bolt being moveable from an extended position to a retracted position; (c) a spindle unit having a cam for selectively engaging the first depression, the cam being rotatable between an engaged position securing the bolt in the extended position, and a released position permitting movement of the bolt; and (d) handle means on the bolt for moving the bolt between the extended and retracted positions, the handle means protruding at least one side of the door.

Claim 3

The deadbolt mechanism of claim 1 including means for biasing the bolt toward the extended position.

Claim 4

The deadbolt mechanism of claim 2 wherein the handle means is rigidly affixed to the bolt, the bolt being capable of rotating in the guide means, the mechanism further comprising means for selectively engaging the handle means by rotating the bolt for holding the bolt in the retracted position against the biasing means.

Claim 5

The deadbolt mechanism of claim 1 including a second transverse arcuate depression in the bolt for engagement by the cam for retaining the bolt in the retracted position.

Claim 6

The deadbolt mechanism of claim 1 wherein the spindle unit includes a lock cylinder for rotating the cam by means of a key.

Claim 7

The deadbolt mechanism of claim 1 wherein the spindle unit includes a thumbturn for rotating the cam.

Claim 8

The deadbolt mechanism of claim 5 wherein the spindle unit includes backlash means for permitting rotational movement of the cam between the engaged position and the released position without requiring rotation of the lock cylinder and shaft means for rotating the cam from the opposite side of the door from the lock cylinder.

Claim 9

The deadbolt mechanism of claim 1 wherein the bolt has a cylindrical thickness and the distance traveled by the bolt between the extended position and the retracted position is at least approximately two times the thickness.

Claim 10

The deadbolt mechanism of claim 1 wherein the bolt has a maximum transverse cylindrical thickness and the bolt has a length of at least approximately four times the thickness in excess of the distance between the extended and retracted positions.

Claim 11

The deadbolt mechanism of claim 1 including a keeper plate for securing the bolt laterally within the frame of the door, the keeper plate being adapted for mounting to supporting structure of the frame.

Claim 12

The deadbolt mechanism of claim 1 wherein the bolt has a diameter of from about 0.7 to about 1.0 inches and the distance traveled by the bolt between the extended position and the retrated position is about two inches.

Claim 13

The deadbolt mechanism of claim 11 wherein the cam rotates on an axis located about 23/8 inches from an edge of the door and the bolt has a length of at least about 6.0 inches, the bolt being supported on opposite sides of the spindle unit.

Claim 14

The deadbolt mechanism of claim 1 mounted in a door.

Claim 17

The method of claim 14 wherein the frame is supported by a stud, the method comprising the additional steps of drilling a jamb hole through the frame and into the stud whereby the bolt extends into the stud when the door is closed and the cam is engaging the depression.

Claim 20

The method of claim 16 comprising the further step of enlarging the clearance hole for permitting movement of the handle member within the clearance hole.

Claim 21

The deadbolt mechanism of claim 2 wherein the means for guiding the bolt comprises; (a) a guide tube for mounting within the door, the guide tube having an open first end and a second end, the second end being at least partially closed for retaining the biasing means; (b) a guide plate for mounting at the edge of the door in the line with the guide tube, the guide plate having an aperture for receiving the bolt; and (c) means for securing the guide tube in the door apart from the guide plate.

Claim 22

A deadbolt lock mechanism for a door having first and second opposed sides, the lock mechanism comprising; (a) an elongated cylindrical bolt having first and second transverse arcuate depressions therein, the first and second depressions being spaced apart on the bolt by a distance of at least about 1.5 inches; (b) means for guiding the bolt in the door between the first and second sides, the bolt being moveable from an extended position to a retracted position, the guide means comprising: (i) a guide tube for mounting within the door, the guide tube having an open first end and a second end, the second end being at least partially closed; (ii) a guide plate for mounting at the edge of the door in line with the guide tube, the guide plate having an aperture for receiving the bolt; and (iii) means for securing the guide tube in the door apart from the guide plate; (c) means for biasing the bolt toward the extended position comprising a spring within the guide tube, the spring engaging the second end of the guide tube; (d) a spindle unit for mounting against the first side of the door, the spindle unit comprising; (i) a rotatably mounted cam having a first position wherein the bolt is free to move between the extended and retracted positions, and a second position for engaging the first or second arcuate depressions wherein the bolt is prevented from moving; (ii) a rotatable lock cylinder for turning the cam by means of a key between the first and second positions, thereby selectively securing the bolt in the extended and retracted positions; and (iii) backlash means for permitting rotational movement of the cam without requiring rotation of the lock cylinder; (e) shaft means for mounting against the second side of the door, the shaft means being capable of rotating the cam between the first and second positions without requiring rotation of the lock cylinder; (f) first and second handles for protruding the corresponding first and second sides of the door for moving the bolt between the extended and retracted positions; and (g) means for selectively engaging at least one of the handles for holding the bolt in the retracted position without requiring the cam to be in engagement with the second depression.

Claim 23

A deadbolt lock mechanism for a door having first and second opposed sides, the lock mechanism comprising; (a) an elongated cylindrical bolt having first and second transverse arcuate depressions therein, the first and second depressions being spaced apart on the bolt by a distance of at least about 1.5 inches; (b) means for guiding the bolt in the door between the first and second sides, the bolt being moveable from an extended position to a retracted position, the guide means comprising: (i) a guide tube for mounting within the door, the guide tube having an open first end and a second end, the second end being at least partially closed; (ii) a guide plate for mounting at the edge of the door in line with the guide tube, the guide plate having an aperture for receiving the bolt; and (iii) means for securing the guide tube in the door apart from the guide plate; (c) means for biasing the bolt toward the extended position comprising a spring within the guide tube, the spring engaging the second end of the guide tube; (d) a spindle unit for mounting against the first side of the door, the spindle unit comprising; (i) a rotatably mounted cam having a first position wherein the bolt is free to move between the extended and retracted positions, and a second position for engaging the first or second arcuate depressions wherein the bolt is prevented from moving; (ii) a rotatable lock cylinder for turning the cam by means of a key between the first and second positions, thereby selectively securing the bolt in the extended and retracted positions; and (iii) backlash means for permitting rotational movement of the cam without requiring rotation of the lock cylinder; (e) shaft means for mounting against the second side of the door, the shaft means being capable of rotating the cam between the first and second positions without requiring rotation of the lock cylinder; (f) first and second handles for protruding the corresponding first and second sides of the door for moving the bolt between the extended and retracted positions; and (g) means for selectively engaging at least one of the handles for holding the bolt in the retracted position without requiring the cam to be in engagement with the second depression.

Claim 24

The deadbolt mechanism of claim 19 wherein the securing means comprises a pin member extending from proximate the first-side of the door to proximate the second side of the door, the pin member tangentially intersecting the guide tube.