Fire preventing duct for passing cables and pipes through walls and bulkheads
van Dreumel , et al. July 18, 2
U.S. patent number D428,325 [Application Number D/093,321] was granted by the patent office on 2000-07-18 for fire preventing duct for passing cables and pipes through walls and bulkheads. Invention is credited to Dagfinn Nilsen, Andre van Dreumel.
| United States Patent | D428,325 |
| van Dreumel , et al. | July 18, 2000 |
Fire preventing duct for passing cables and pipes through walls and bulkheads
Claims
The ornamental design for a fire preventing duct for passing cables and pipes through walls and bulkheads, as shown and described.
| Inventors: | van Dreumel; Andre (3221 Sandefjord, NO), Nilsen; Dagfinn (3221 Sandefjord, NO) |
|---|---|
| Appl. No.: | D/093,321 |
| Filed: | September 9, 1998 |
Foreign Application Priority Data
| Mar 10, 1998 [NO] | 980189 | |||
| Current U.S. Class: | D8/354 |
| Current International Class: | 0805 |
| Field of Search: | ;D8/356 ;24/16R,16PB,115R ;248/56 ;174/152G,153G ;403/217 ;D25/123,122,124,129 |
References Cited [Referenced By]
U.S. Patent Documents
| D395815 | July 1998 | Walters et al. |
| 3123879 | March 1964 | Boduroff et al. |
| 4768024 | August 1988 | Hauff |
| 5027478 | July 1991 | Suhr |
| 57583 | Jun 1976 | NL | |||
| 71614 | Jun 1994 | NO | |||
Attorney, Agent or Firm: Ladas & Parry
Description
FIG. 1 is a perspective view of a fire preventing duct for passing cables and pipes through walls and bulkheads showing our new design;
FIG. 2 is a front view thereof, the rear view, right side view and left side view corresponding to the front view; and,
FIG. 3 is a top view thereof, the bottom view corresponding to the top view .
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