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Class Information
Number: 16/DIG.21
Name: Miscellaneous hardware > Checks, closers, check valve construction
Description:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6442795 |
Damper for a pivot door |
Sep. 3, 2002 |
| 6434788 |
Door closer |
Aug. 20, 2002 |
| 6430775 |
Door stop |
Aug. 13, 2002 |
| 6260236 |
Door closer with hydraulic back checking |
Jul. 17, 2001 |
| 6151753 |
Door closer to generate a sudden change in the transmission ratio during the closing phase |
Nov. 28, 2000 |
| 6112368 |
Temperature compensating valve |
Sep. 5, 2000 |
| 5842255 |
Door closers with automatic latching or/and delayed action |
Dec. 1, 1998 |
| 5152030 |
Vehicle door check |
Oct. 6, 1992 |
| 4999872 |
Door closer |
Mar. 19, 1991 |
| 4967444 |
Device for damping the closing movement of a dual door spring-loaded or closure and closure control therefor |
Nov. 6, 1990 |
| 4847946 |
Hydraulic door closer |
Jul. 18, 1989 |
| 4831688 |
Door stop |
May. 23, 1989 |
| 4823432 |
Devices for stopping swinging doors |
Apr. 25, 1989 |
| 4748716 |
Hinge for sleeper cab doors |
Jun. 7, 1988 |
| 4573238 |
Door closer incorporating self-cleaning and temperature compensating flow control valve |
Mar. 4, 1986 |
| 4386446 |
Door closer |
Jun. 7, 1983 |
| 4285094 |
Door closing apparatus |
Aug. 25, 1981 |
| 4185356 |
Door closer |
Jan. 29, 1980 |
| 4180888 |
Door closer |
Jan. 1, 1980 |
| 4178655 |
Counterbalance mechanism |
Dec. 18, 1979 |
| 4053961 |
Apparatus for holding open a door or the like |
Oct. 18, 1977 |
| 4048694 |
Hydraulic door closer with adjustable time delay dampener |
Sep. 20, 1977 |
| 4040144 |
Door assister |
Aug. 9, 1977 |
| 4003102 |
Door and window closer |
Jan. 18, 1977 |
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