| |
 |
|
Class Information
Number: 182/208
Name: Fire escape, ladder, or scaffold > Ladder > Extension > Mechanical or power-extending
Description: Device including means providing a mechanical advantage or motor means connected between the sections to cause relative movement therebetween.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7100741 |
Roller assembly for a ladder |
Sep. 5, 2006 |
| 6640928 |
Free-standing, multi-functional, mobile construction aid |
Nov. 4, 2003 |
| 5758745 |
Extension ladder, combination end cap/guide bracket, and method for climbing |
Jun. 2, 1998 |
| 5590739 |
Adjustable extension stepladder |
Jan. 7, 1997 |
| 5064022 |
Ladder apparatus and method for large mobile equipment |
Nov. 12, 1991 |
| 5033584 |
All-purpose ladder |
Jul. 23, 1991 |
| 4512439 |
Control mechanism for aerial ladders |
Apr. 23, 1985 |
| 4427093 |
Locking device |
Jan. 24, 1984 |
| 4396093 |
Ladder or boom extension system |
Aug. 2, 1983 |
| 4232761 |
Extensible ladder |
Nov. 11, 1980 |
| 4094381 |
Aerial extension ladder |
Jun. 13, 1978 |
| 4079812 |
Movable shelter floor type emergency escape |
Mar. 21, 1978 |
| 3935926 |
Extension ladder |
Feb. 3, 1976 |
|
|
|
