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Class Information
Number: 182/201
Name: Fire escape, ladder, or scaffold > Ladder > Supporting surface compensating means > Stile extension
Description: Device comprising a movable and adjustable stile extension.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7222696 |
Independently adjustable extensions for leveling a ladder |
May. 29, 2007 |
| 7121382 |
Independently adjustable extensions leveling a ladder |
Oct. 17, 2006 |
| 7017711 |
Method for extending the leg of a ladder and apparatus therefor |
Mar. 28, 2006 |
| 6948591 |
Support apparatus or accessory for a ladder |
Sep. 27, 2005 |
| 6745870 |
Adjustable ladder support |
Jun. 8, 2004 |
| 6702066 |
Ladder leveling device |
Mar. 9, 2004 |
| 6698550 |
Adjustable step ladder |
Mar. 2, 2004 |
| 6655497 |
Stabilizer for ladders |
Dec. 2, 2003 |
| 6640932 |
Ladder stile extender |
Nov. 4, 2003 |
| 6604607 |
Extendable A-frame ladder for uneven surfaces |
Aug. 12, 2003 |
| 6374947 |
Ladder leveling device |
Apr. 23, 2002 |
| 6237718 |
Extendable leg means for levelling ladders and the like |
May. 29, 2001 |
| 6234273 |
Adjustable ladder |
May. 22, 2001 |
| 6234710 |
Lockable adjustable length member |
May. 22, 2001 |
| 5816364 |
Ladder leveling apparatus |
Oct. 6, 1998 |
| 5542497 |
Ladder level adjusting attachment |
Aug. 6, 1996 |
| 5421429 |
Ladder with safety feet |
Jun. 6, 1995 |
| 5265699 |
Ladder Guard |
Nov. 30, 1993 |
| 5265698 |
Self-leveling ladder |
Nov. 30, 1993 |
| 5232067 |
Stile extending attachment for ladder |
Aug. 3, 1993 |
| 5181584 |
Ladder leveling adapter |
Jan. 26, 1993 |
| 5154257 |
Adjustable ladder apparatus |
Oct. 13, 1992 |
| 5148892 |
Quick stand adjusting device |
Sep. 22, 1992 |
| 5074378 |
Multi-purpose ladder with locking mechanism for extendible legs |
Dec. 24, 1991 |
| 5064024 |
Ladder leg extender apparatus with improved vertical adjustment means |
Nov. 12, 1991 |
| 5027923 |
Extension device for a ladder |
Jul. 2, 1991 |
| 4995474 |
Safety ladder |
Feb. 26, 1991 |
| 4844208 |
Ladder extension device |
Jul. 4, 1989 |
| 4836331 |
Ladder safety device-antislip |
Jun. 6, 1989 |
| 4766976 |
Ladder leg extender and leveler |
Aug. 30, 1988 |
| 4744441 |
Screw-type ladder leveler |
May. 17, 1988 |
| 4722420 |
Special purpose ladder |
Feb. 2, 1988 |
| 4683980 |
Ladder-leveling device |
Aug. 4, 1987 |
| 4676342 |
Trestle ladder |
Jun. 30, 1987 |
| 4412599 |
Ladder attachment |
Nov. 1, 1983 |
| 4371057 |
Telescopic scaffold |
Feb. 1, 1983 |
| 4249638 |
Ladder extension apparatus |
Feb. 10, 1981 |
| 4143742 |
Ladder extension apparatus |
Mar. 13, 1979 |
| 3995565 |
Extensible telescoping cargo brace |
Dec. 7, 1976 |
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