Double lock T-handle assembly

• US 6,952,940 B2
• Filed: 03/13/2003
• Issued: 10/11/2005
• Est. Priority Date: 10/23/2000
• Status: Expired due to Term

• Current Assignee: Allegis Corporation (Huron Consulting Group Incorporated)
• Original Assignee: Allegis Corporation (Huron Consulting Group Incorporated)
• Inventors: Molzer, Frederick, Molzer, Klaus
• Primary Examiner(s): Walsh, John B.
• Application Number:
  US10/388,373
• Publication Number:
  US 20040007031A1
• Time in Patent Office: 943 Days
• Field of Search: 702/08, 702/03, 702/12, 702/10
• US Class Current: 70/210
• CPC Class Codes: E05B 1/0092 Moving otherwise than only rectilinearly or only rotatively E05B5/003 takes precedence
• CPC Class Codes: E05B 13/002 locking the handle E05B13/10, E05B47/0657 take precedence
• CPC Class Codes: E05B 17/0062 with destructive disengagement
• CPC Class Codes: E05B 35/12 requiring the use of two keys, e.g. safe-deposit locks locks with key-operated keyhole cover E05B17/142
• CPC Class Codes: E05B 67/383 Staples or the like for padlocks; Lock slings; Arrangements on locks to cooperate with padlocks
• CPC Class Codes: Y10T 70/5761 Retractable or flush handle
• CPC Class Codes: Y10T 70/577 Locked stationary
• CPC Class Codes: Y10T 70/5779 With padlock

Abstract

A double lock T-handle is disclosed having a tray which includes an inwardly dished handle receiving area, a second recessed handle receiving region, and a recessed padlock receiving depression. The tray further includes a lock cylinder casing having a locking cylinder and a shaft cylinder casing having a shaft. The lock cylinder functions as a first lock and a padlock functions as a second lock for the double lock T-handle. The T-handle includes a locking shoulder and a fracturable throat section which deters forced breakage of the T-handle and undesirable opening of a locked door.

Claims

1. A double locking T-handle assembly comprising:

a) a tray, said tray having a front side a back side and at least one hasp slot, said back side having a lock cylinder casing, and a shaft cylinder casing, said front side having a handle receiving area;

b) a latching assembly comprising a shaft positioned within said shalt cylinder casing, a bracket attached to said shaft, and a roller cam attached to said bracket;

c) a padlock hasp engaged to said tray, said padlock hasp being constructed and arranged for receipt of a padlock;

d) a lock cylinder positioned within said lock cylinder casing; and

e) a handle comprising a fracturable throat section, said handle being pivotally connected to said shaft, said handle having a pair of grasping members said handle being constructed for positioning within said tray, said handle being further adapted for positioning proximate to said padlock hasp.

2. The double lock T-handle assembly according to claim 1, said tray further comprising a recessed handle receiving region.

3. The double lock T-handle assembly according to claim 2, said handle further casing comprising a padlock receiving region.

4. The double lock T-handle assembly according to claim 3, said shaft cylinder casing comprising at least one rotational restriction surface.

5. The double lock T-handle assembly according to claim 4, said latch assembly further comprising a handle shank engaged to said handle, a handle attachment collar having a slot positioned over said handle shank, a shaft guide bracket having a barrier engaged to said handle attachment collar, said shaft having at least one engagement prong disposed through said handle attachment collar and said shaft guide bracket for pivotal affixation to said handle shank.

6. The double lock T-handle assembly according to claim 4, said shaft cylinder casing further comprising a positioning limiter.

7. The double lock T-handle assembly according to claim 4, further comprising a collar having a lug and a sleeve.

8. The double lock T-handle assembly according to claim 6, said latch assembly further comprising a handle spring positioned around said shaft between said collar and said positioning limiter.

9. The double lock T-handle assembly according to claim 8, further comprising a second spring engaged to said padlock hasp and to said back side of said tray, said second spring being constructed and arranged to retract said padlock hasp within said tray.

10. The double lock T-handle assembly according to claim 4, said tray further comprising a pin aperture constructed and arranged to permit passing of a pin, said pin being engaged to said lock cylinder, said lock cylinder being constructed to cause elevation or retraction of said pin within said pin aperture.

11. The double lock T-handle assembly according to claim 4, said tray further comprising a back plate cover constructed and arranged for covering of said padlock hasp, and said lock cylinder casing.

12. The double lock T-handle assembly according to claim 10, further comprising a pin bracket comprising a guide slot, a cam slot, a pin support, said pin extending outwardly from said pin bracket.

13. The double lock T-handle assembly according to claim 12, said cam having a cam pin constructed and arranged for positioning in said cam slot.

14. The double lock T-handle assembly according to claim 13, said tray further comprising a guide, said guide constructed and arranged for positioning within said guide slot.

15. The double lock T-handle assembly according to claim 5, said handle attachment collar further comprising at least one internal prong receiving slot.

16. The double lack T-handle according to claim 1, further comprising a shaft casing having a first notch having a pair of angled ramps.

17. The double lock T-handle according to claim 1, said shaft cylinder casing further comprising a distal end having a plurality of channels.

18. The double lock T-handle according to claim 16, said shaft casing comprising a handle rotation stop.

19. The double lock T-handle according to claim 1, wherein said bracket is a substantially tubular bracket, said latching mechanism comprising a slide, a cam slot, and a platform wherein said roller cam is adjustably positionable relative to said bracket.

20. A double locking T-handle assembly comprising:

a) a tray, said tray having a front side, a back side and at least one hasp slot, said back side having a lock cylinder casing, and a shaft cylinder casing, said front side having a handle receiving area;

b) a latching assembly comprising a shaft positioned within said shaft cylinder casing, a bracket attached to said shaft, and a roller cam attached to said bracket;

c) a handle, said handle being pivotally connected to said shaft, said handle having a pair of grasping members and a central member, said handle being constructed for positioning within said tray;

d) a lock cylinder positioned within said lock cylinder casing; and

e) a padlock hasp engaged to said tray, said padlock hasp being constructed and arranged for traversing said tray, said padlock hasp being further constructed and arranged for receipt of a padlock, said padlock being positioned forward of and adjacent to said central member.