HEAVY DUTY DOOR HANDLE AND LOCK APPARATUS

Abstract

A heavy duty door handle and lock apparatus has a housing, a first handle on a first side of the housing, and a second handle on the second side of the housing. The handles are movable independently to retract a latch that extends from the housing. A lock cylinder is provided on one side of the housing. When the lock cylinder is in an unlocked position, both of the handles may be moved to retract the latch. When the lock cylinder is in a locked position, movement of one of the handles retracts the latch but movement of the other of the handles does not retract the latch.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The detailed description particularly refers to the accompanying figures in which:

FIG. 1 is a perspective view of a heavy duty door handle and lock apparatus according to this disclosure and a portion of a door to which the door handle and lock apparatus is coupled, the door handle and lock apparatus having a mortise lock cylinder and a C-shaped handle that is movable horizontally in a direction parallel with the door, as indicated by a first double arrow, to retract a latch of the apparatus, as indicated by a second double arrow, when the mortise lock cylinder is in an unlocking position;

FIG. 2 is a perspective view, similar to FIG. 1, showing the door handle and lock apparatus arranged for insertion into a cutout formed in the door, the door handle and lock apparatus having a housing which includes first and second side walls that define upper and lower channels in which portions of the door above and below the cutout are trapped when the apparatus is coupled, the housing having a side wall extending between the first and second walls, the door having notches adjacent the cutout to receive upper and lower portions of the side wall of the housing, and the side wall of the housing having first and second holes through which screws extend to secure the apparatus to the door;

FIG. 3 is an exploded perspective view of the door handle and lock apparatus, with portions broken away, showing the apparatus having a chassis with a generally vertical segment to which a latch bolt assembly couples, first and second plates that are retained for horizontal sliding movement between upper and lower generally horizontal segments of the chassis, the first and second handles being associated with respective first and second plates, and first and second retractor hooks that are associated with the first and second plates;

FIG. 4 is an enlarged perspective view of a portion of the door handle and lock apparatus showing the first and second retractor hooks in respective downward positions relative to the first and second plates so as to hook onto respective portions of a cross pin of the latch bolt assembly;

FIG. 5 is an enlarged perspective view, similar to FIG. 4, showing the mortise lock cylinder moved to a locking position having a cam of the mortise lock cylinder lifting one of the retractor hooks, but not the other, off of the cross pin such that movement of the associated plate to the dotted line position does not result in retraction of the latch of the latch bolt assembly;

FIG. 6 is a cross sectional view, taken along line 6-6 of FIG. 2, showing the first and second handles coupled to respective first and second plates and extending in opposite directions from the housing;

FIG. 7 is a cross sectional view, similar to FIG. 6, showing a user moving a first handles to retract the latch, the first and second handles and the associated first and second plates being movable independently such that the second handle remains stationary when the first handle is moved;

FIG. 8 is an enlarged perspective view, with portions broken away, of an alternative embodiment having a rotatable handle that is movable to rotate a gear which interfaces with a rack mounted to the associated plate to slide the plate relative to the chassis; and

FIG. 9 is a cross sectional view, taken along line 9-9 of FIG. 8, showing a shaft extending between the rotatable handle lever and the gear having a weakened neck down portion that is configured to shear or fracture in the event of an attempted forced entry.

Claims

1. A door handle and lock apparatus for use with a door having generally vertically oriented front and rear surfaces, the apparatus comprising a housing configured to be coupled to the door, the housing having a first wall and a second wall that is spaced from the first wall to define an interior region of the housing therebetween,a latch movable along a latch axis relative to the housing between an extended position in which a portion of the latch extends from the interior region of the housing and a retracted position in which substantially all of the latch is situated in the interior region of the housing,a first handle extending outwardly relative to the first wall of the housing, the first handle being translatable relative to the housing along a first handle axis that is generally parallel with the latch axis,a second handle extending outwardly relative to the second wall of the housing, the second handle being translatable relative to the housing along a second handle axis that is generally parallel with the latch axis, anda lock movable between a locking position in which the latch remains in its extended position when at least one of the first and second handles is translated relative to the housing and an unlocking position in which the latch moves from the extended position to the retracted position when at least one of the first and second handles is translated relative to the housing.

2. The apparatus of claim 1, wherein the first wall is substantially parallel with the second wall and the housing is configured such that, when coupled to the door, the first and second walls are substantially parallel with the front and rear surfaces of the door.

3. The apparatus of claim 1, wherein the latch axis, the first handle axis, and the second handle axis are oriented substantially horizontally when the housing is coupled to the door.

4. The apparatus of claim 1, wherein the housing includes a chassis to which the first and second walls are coupled.

5. The apparatus of claim 4, wherein the chassis comprises a generally vertical segment having a hole through which the latch extends.

6. The apparatus of claim 4, wherein the chassis comprises a generally horizontal upper segment and a generally horizontal lower segment, further comprising first and second plates situated between the upper and lower segments for independent sliding movement relative to the upper and lower segments, the first handle being coupled to the first plate, and the second handle being coupled to the second plate.

7. The apparatus of claim 1, wherein the first and second handles are generally C-shaped, each of the first and second handles having a generally vertical gripping portion and having generally horizontal upper and lower portions extending from the gripping portion, the first and second walls each having a first horizontally oriented slot through which a respective upper portion extends, and each of the first and second walls having a second horizontally oriented slot through which a respective lower portion extends.

8. The apparatus of claim 7, wherein the upper and lower portions of the first and second handles move within the first and second horizontally oriented slots when the first and second handles are translated relative to the housing.

9. The apparatus of claim 7, wherein the upper and lower portions of the first and second handles each include flares that are sized to cover the entirety of the associated first and second horizontally oriented slots.

10. The apparatus of claim 1, wherein the first and second handles are independently moveable between respective first and second positions, the first handle is coupled to the latch such that movement of the first handle from its first position to its second position always results in movement of the latch from the extended position to the retracted position, the second handle being decoupled from the latch when the lock is in the locking position such that movement of the second handle from its first position to its second position does not result in movement of the latch from the extended position to the retracted position, and the second handle being coupled to the latch when the lock is in the unlocking position such that movement of the second handle from its first position to its second position results in movement of the latch from the extended position to the retracted position.

11. The apparatus of claim 1, wherein the lock comprises a rotatable lock cylinder.

12. The apparatus of claim 11, further comprising a first handle support situated in the interior region of the-housing and coupled to the first handle for movement therewith, a second handle support situated in the interior region of the housing and coupled to the second handle for movement therewith, and a retractor hook coupled to the second handle support and movable between a first position hooked onto the latch and a second position unhooked from the latch, and wherein the rotatable lock cylinder is rotatable to move the retractor hook between the first and second positions.

13. The apparatus of claim 12, wherein the housing further comprises a chassis, the first handle support comprises a first plate that slides relative to the chassis, and the second handle support comprises a second plate that slides relative to the chassis.

14. The apparatus of claim 12, further comprising a retractor keeper coupled to the second handle support and configured to maintain the retractor in its respective first and second positions.

15. The apparatus of claim 12, wherein the latch comprises a main latch bolt oriented generally along the latch axis and a pin that is coupled to the main latch bolt and that is oriented generally perpendicular to the latch axis, the retractor hook hooking onto the pin when in the first position, and the retractor hook being unhooked from the pin when in the second position.

16. The apparatus of claim 11, wherein the rotatable lock cylinder comprises a threaded mortise cylinder which is configured for receipt of a key.

17. A door handle and lock apparatus for use with a door having generally vertically oriented front and rear surfaces, generally vertically oriented first and second side surfaces, and a cutout extending between the front and rear surfaces and open at the first side surface, the apparatus comprising a housing configured to substantially fill the cutout of the door, the housing having a first wall that is generally parallel with the front surface of the door and a second wall that is generally parallel with the rear surface of the door, the housing having an interior region between the first and second walls,a latch movable relative to the housing between an extended position in which a portion of the latch extends from the interior region of the housing and a retracted position in which substantially all of the latch is situated in the interior region of the housing,a first handle extending outwardly relative to the first wall of the housing,a second handle extending outwardly relative to the second wall of the housing, anda lock movable between a locking position in which the latch remains in its extended position when at least one of the first and second handles is moved relative to the housing and an unlocking position in which the latch moves from the extended position to the retracted position when at least one of the first and second handles is moved relative to the housing.

18. The apparatus of claim 17, wherein the housing comprises a chassis having a generally horizontal upper segment and a generally horizontal lower segment, the first and second walls each having upper portions extending upwardly beyond the upper segment of the chassis to define a first channel in which a first portion of the door above the cutout is trapped when the housing is coupled to the door, and the first and second walls each having lower portions extending downwardly beyond the lower segment of the chassis to define a second channel in which a second portion of the door below the cutout is trapped when the housing is coupled to the door.

19. A door handle and lock apparatus for use with a door having generally vertically oriented front and rear surfaces, generally vertically oriented first and second side surfaces, and a cutout extending between the front and rear surfaces and open at the first side surface, the apparatus comprising a housing configured to be received in the cutout and coupled to the door, the housing having a first wall, a second wall that is spaced from the first wall to define an interior region of the housing therebetween, and a side wall extending between the first and second walls, the side wall having a latch receiving opening,a latch extending through the latch receiving opening and movable relative to the housing between an extended position in which a portion of the latch extends from the interior region beyond the side wall of the housing and a retracted position in which substantially all of the latch is situated in the interior region of the housing,a first handle extending outwardly relative to the first wall of the housing,a second handle extending outwardly relative to the second wall of the housing, anda lock movable between a locking position in which the latch remains in its extended position when at least one of the first and second handles is moved relative to the housing and an unlocking position in which the latch moves from the extended position to the retracted position when at least one of the first and second handles is moved relative to the housing, the side wall of the housing having a pair of screw holes which receive screws that couple the housing to the door.

20. The apparatus of claim 19, wherein the housing comprises a chassis having a generally horizontal upper segment and a generally horizontal lower segment, the first and second walls each having upper portions extending upwardly beyond the upper segment of the chassis to define a first channel, a first screw hole of the pair of screw holes opening into the first channel, the first and second walls each having lower portions extending downwardly beyond the lower segment of the chassis to define a second channel, and a second screw hole of the pair of screw holes opening into the second channel.