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| Number | Title | Issue Date |
| 6926318 | Field configurable electric strike for exit devices This electric strike mechanism has a housing, a keeper pivotally mounted in the housing, at least one locking element pivotally mounted within the housing, for pivoting between a first position where the keeper is prevented from pivoting, and a second position where... | 08/09/2005 |
| 6199414 | Quick release locking means for a cover A quick release lock for a cover is provided. The cover may be a manhole cover for closing onto a manhole ring having a radially extended flange. The quick release lock mainly includes several angularly equal-spaced cross-shaped slots provided on the cove... | 03/13/2001 |
| 5901992 | Electromechanical locking mechanism for door leaves having a door closing device An electromechanical locking mechanism for door leaves whose holding force can be adjusted continuously and which at the same time offers the possibility, when the locking mechanism is energized, of also releasing the closed door from and returning it to ... | 05/11/1999 |
| 5072973 | Door hold open device A door hold open device for use with fire doors connected to a door closer unit. The hold open device has a latching means that automatically unlatches if the power supply drops below a predetermined threshold or a person attempts to disconnect the power ... | 12/17/1991 |
| 4961600 | Tank cover clamp A safety tank cover clamp 10 has first and second elongated claw members 24 and 25 pivotally attached to yoke member 11. Threaded cylindrical traveler member 17 is treadedly engaged with treaded throughhole 16 in yoke member 11. Upper end 18 of traveler m... | 10/09/1990 |
| 4948181 | Roto cam latch A sealable, reusable shipping container having a highly reliable interior latching mechanism which is actuated on the exterior of the container without using special tools is provided. The unique latching mechanism can be adapted to securely closing and s... | 08/14/1990 |
| 4844518 | Roto cam latch A sealable, reusable shipping container having a highly reliable interior latching mechanism which is actuated on the exterior of the container without using special tools is provided. The unique latching mechanism can be adapted to securely closing and s... | 07/04/1989 |
| 4671718 | Expanding latch captive bolt fastener A fastener in which a captive bolt engages a cylindrical nut within a cylrical confining housing. The cylindrical nut has a longitudinal slot in which a pair of oppositely facing latches are disposed and which cooperate with the housing to prevent the ro... | 06/09/1987 |
