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Class Information
Number: 16/70
Name: Miscellaneous hardware > Checks and closers > Pneumatic > Spring and lever
Description: Devices in which the closing devices include springs and lever elements.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6615449 |
Releasable locking assembly for a door control cylinder |
Sep. 9, 2003 |
| 6557300 |
Propping support for a chest |
May. 6, 2003 |
| 6202253 |
Storm door cylinder lock |
Mar. 20, 2001 |
| 5749122 |
Interior door closer and method |
May. 12, 1998 |
| 5083342 |
Door closure delay device |
Jan. 28, 1992 |
| 4991255 |
Pneumatic door-closer usable for left-hinged and right-hinged doors |
Feb. 12, 1991 |
| 4639969 |
Door closer mechanism |
Feb. 3, 1987 |
| 4486917 |
Door closer with a compressible braking sleeve |
Dec. 11, 1984 |
| 4483044 |
Pneumatic door closer having resilient braking sleeve and cooperating piston rod incremental braking enlargements |
Nov. 20, 1984 |
| 4430770 |
Door operating mechanism |
Feb. 14, 1984 |
| 4357731 |
Door closer with hold open feature |
Nov. 9, 1982 |
| 4190926 |
Door guard |
Mar. 4, 1980 |
| 3934306 |
Door closure device |
Jan. 27, 1976 |
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