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Class Information
Number: 182/204
Name: Fire escape, ladder, or scaffold > Ladder > Supporting surface compensating means > Stile extension > Increment adjustment
Description: Device wherein the adjusting means comprises stepped adjustment means.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7293630 |
Ladder stabilization device |
Nov. 13, 2007 |
| 7222696 |
Independently adjustable extensions for leveling a ladder |
May. 29, 2007 |
| 7163084 |
Adjustable ladder stabilizer |
Jan. 16, 2007 |
| 7121382 |
Independently adjustable extensions leveling a ladder |
Oct. 17, 2006 |
| 6935463 |
Safety support for ladders |
Aug. 30, 2005 |
| 6880675 |
Multifunctional adjustable ladder assembly |
Apr. 19, 2005 |
| 6851752 |
Height adjustment mechanism for an infant support structure |
Feb. 8, 2005 |
| 6779632 |
Adjustable leveling stepladder |
Aug. 24, 2004 |
| 6745870 |
Adjustable ladder support |
Jun. 8, 2004 |
| 6729440 |
Adjustable ladder |
May. 4, 2004 |
| 6702066 |
Ladder leveling device |
Mar. 9, 2004 |
| 6702384 |
Support device |
Mar. 9, 2004 |
| 6663062 |
Folding power tool stand elevating device |
Dec. 16, 2003 |
| 6655497 |
Stabilizer for ladders |
Dec. 2, 2003 |
| 6640932 |
Ladder stile extender |
Nov. 4, 2003 |
| 6595326 |
Ladder leveling device |
Jul. 22, 2003 |
| 6478113 |
Ladder leveling system |
Nov. 12, 2002 |
| 6435306 |
Ladder leveling arrangement |
Aug. 20, 2002 |
| 6422341 |
Lift-up rail extensions |
Jul. 23, 2002 |
| 6401866 |
Machine for leveling a ladder on an uneven surface |
Jun. 11, 2002 |
| 6378655 |
Stair-stepper ladder leg |
Apr. 30, 2002 |
| 6293367 |
Ladder leveling apparatus |
Sep. 25, 2001 |
| 6237718 |
Extendable leg means for levelling ladders and the like |
May. 29, 2001 |
| 6234273 |
Adjustable ladder |
May. 22, 2001 |
| 6073726 |
Adjustable step ladder |
Jun. 13, 2000 |
| 6012546 |
Safety ladder |
Jan. 11, 2000 |
| 5913382 |
Ladder extension system |
Jun. 22, 1999 |
| 5908085 |
Ladder leveling accessory system |
Jun. 1, 1999 |
| 5853065 |
Adjustable leg ladder assembly |
Dec. 29, 1998 |
| 5845744 |
Ladder levelling device |
Dec. 8, 1998 |
| 5718306 |
Ladder leveling device |
Feb. 17, 1998 |
| 5704451 |
Ladder stabilizing system |
Jan. 6, 1998 |
| 5669462 |
Ladder leveling apparatus |
Sep. 23, 1997 |
| 5609222 |
Ladder leveler |
Mar. 11, 1997 |
| 5553963 |
Clamp device for a ladder adjustment apparatus |
Sep. 10, 1996 |
| 5551529 |
Ladder stabilizer |
Sep. 3, 1996 |
| 5542497 |
Ladder level adjusting attachment |
Aug. 6, 1996 |
| 5538101 |
Adjustable, portable combination tree stand |
Jul. 23, 1996 |
| 5522473 |
Ladder stabilizing device |
Jun. 4, 1996 |
| 5507364 |
Ladder leveler |
Apr. 16, 1996 |
| 5497850 |
Apparatus for leveling a ladder |
Mar. 12, 1996 |
| 5476153 |
Ladder leveling apparatus |
Dec. 19, 1995 |
| 5335754 |
Self-levelling ladder |
Aug. 9, 1994 |
| 5325936 |
Ladder leveler |
Jul. 5, 1994 |
| 5307900 |
Ladder leg extension apparatus |
May. 3, 1994 |
| 5305851 |
Safety ladder |
Apr. 26, 1994 |
| 5265698 |
Self-leveling ladder |
Nov. 30, 1993 |
| 5174412 |
Ladder leveler |
Dec. 29, 1992 |
| 5107958 |
Ladder leveler |
Apr. 28, 1992 |
| 5094320 |
Ladder improvement |
Mar. 10, 1992 |
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