Patent
Ladder stabilizer
| العنوان: | Ladder stabilizer |
|---|---|
| Patent Number: | 11851,950 |
| تاريخ النشر: | December 26, 2023 |
| Appl. No: | 17/863134 |
| Application Filed: | July 12, 2022 |
| مستخلص: | A ladder stabilizer for step ladders and extension ladders. The ladder stabilizer is collapsible for storage. Additionally, the ladder stabilizer includes legs that are adjustable in length and pivotally secured to a rigid lateral support. The rigid lateral support also carries a step plate secured by a hinge to the lateral support. The step plate provides the point of engagement between the ladder stabilizer and a rung of the ladder. |
| Inventors: | Andrews, Stephen D. (Norman, OK, US); Buchanan, Jr., Robert S. (Norman, OK, US); Andrews, Charles W. (Norman, OK, US); Wesson, Shea K. (Norman, OK, US) |
| Assignees: | Ladder Armor LLC (Norman, OK, US) |
| Claim: | 1. A ladder stabilizer comprising: a rigid lateral support, said lateral support formed from at least one hollow tube, said hollow tube having a first end and a second end, the hollow tube defines an arc running from the first end to the second end; a first extension arm having a first end and a second end, said first extension arm first end positioned within said first end of said hollow tube; a second extension arm having a first end and a second end, said second extension arm first end positioned within said second end of said hollow tube; a support beam secured to said rigid lateral support said support beam has a first side and a second side, said rigid lateral support secured to said first side of the support beam; a step plate secured by a hinge to said second side of the support beam the step plate having an upper flat surface configured to extend over an upper surface of a ladder step; a first leg having a first end and a second end, said first end of said first leg pivotally secured to said first extension arm; a second leg having a first end and a second end, said first end of said second leg pivotally secured to said second extension arm. |
| Claim: | 2. The ladder stabilizer of claim 1 , wherein said rigid lateral support comprises a first hollow tube, the first hollow tube having a length, and a second hollow tube, the second hollow tube having a length, wherein each hollow tube is secured to said support beam. |
| Claim: | 3. The ladder stabilizer of claim 2 , wherein said first extension arm is positioned in said first hollow tube and said second extension arm is positioned in said second hollow tube and wherein said first extension arm has a length equal to at least 30% of the length of said first hollow tube and said second extension arm has a length equal to at least 30% of the length of said second hollow tube. |
| Claim: | 4. The ladder stabilizer of claim 3 , wherein said first extension arm has a length equal to at least half the length of said first hollow tube and said second extension arm has a length equal to at least half the length of said second hollow tube. |
| Claim: | 5. The ladder stabilizer of claim 1 , wherein said hinge allows said step plate to move through a 90° range of motion with said step plate aligned in a vertical position when in a collapsed position and aligned in a horizontal position when configured to engage a step of the ladder. |
| Claim: | 6. The ladder stabilizer of claim 1 , wherein said second end of said first extension arm carries a first pivoting receiver configured to receive the said first end of said first leg, said pivoting receiver allows the first leg to pivot to a position which is 90° to a plane defined by said rigid lateral support and said second end of said second extension arm carries a second pivoting receiver configured to receive the said first end of said second leg, said pivoting receiver allows the second leg to pivot to a position which is 90° to a plane defined by said rigid lateral support. |
| Claim: | 7. The ladder stabilizer of claim 6 , wherein said first pivoting receiver has a pair of opposed holes passing through the first pivoting receiver and wherein the first end of said first leg has a series of holes passing through said first end of said first leg such that when a hole in said first end of said first leg is aligned with said pair of opposed holes in said first pivoting receiver a pin passing through the aligned holes will retain said first leg to said first pivoting receiver at a fixed height and wherein said second pivoting receiver has a pair of opposed holes passing through the second pivoting receiver and wherein the first end of said second leg has a series of holes passing through said first end of said second leg such that when a hole in said first end of said second leg is aligned with said pair of opposed holes in said second pivoting receiver a pin passing through the aligned holes will retain said second leg to said second pivoting receiver at a fixed height. |
| Claim: | 8. The ladder stabilizer of claim 1 , further comprising: a first height adjustable foot secured to said second end of said first leg; and, a second height adjustable foot secured to said second end of said second leg. |
| Claim: | 9. The ladder stabilizer of claim 8 , wherein each height adjustable foot has a recess. |
| Claim: | 10. A ladder stabilizer comprising: a rigid lateral support, said lateral support formed from at least one curved hollow tube, said curved hollow tube having a first end and a second end, the hollow tube defines an arc running from the first end to the second end; a first extension arm having a first end and a second end, said first extension arm first end positioned within said first end of said curved hollow tube; a second extension arm having a first end and a second end, said second extension arm first end positioned within said second end of said curved hollow tube; a support beam secured to said rigid lateral support; a step plate secured by a hinge to said support beam; a first leg having a first end and a second end, said first end of said first leg pivotally secured to said first extension arm and said first end of said first leg being height adjustable, said second end of said first leg terminating in a height adjustable and pivotal foot; a second leg having a first end and a second end, said first end of said second leg pivotally secured to said second extension arm and said first end of said second leg being height adjustable, said second end of said second leg terminating in a height adjustable and pivotal foot. |
| Claim: | 11. The ladder stabilizer of claim 10 , wherein said rigid lateral support comprises a first curved hollow tube having a first end and a second end and a second curved hollow tube having a first end and a second end wherein each curved hollow tube is secured to said support beam, the first curved hollow tube defines an arc running from the first end to the second end and the second hollow tube defines an arc running from the first end to the second end. |
| Claim: | 12. The ladder stabilizer of claim 11 , wherein said first extension arm is positioned in said first curved hollow tube, the first hollow tube having a length, and said second extension arm is positioned in said second curved hollow tube, the second hollow tube having a length. |
| Claim: | 13. The ladder stabilizer of claim 12 , wherein said first extension arm has a length equal to at least half the length of said first curved hollow tube and said second extension arm has a length equal to at least half the length of said second curved hollow tube. |
| Claim: | 14. The ladder stabilizer of claim 10 , wherein said support beam has a first side and a second side, said first side has a radius of curvature which conforms to a radius of curvature of said at least one curved hollow tube and said second side is substantially straight. |
| Claim: | 15. The ladder stabilizer of claim 10 , wherein said hinge allows said step plate to move through a 90° range of motion with said step plate aligned in a vertical position when in a collapsed position and aligned in a horizontal position when configured to engage a step of the ladder. |
| Claim: | 16. The ladder stabilizer of claim 10 , where said second end of said first extension arm carries a first pivoting receiver configured to receive the said first end of said first leg, said pivoting receiver allows the first leg to pivot to a position which is 90° to a plane defined by said rigid lateral support and said second end of said second extension arm carries a second pivoting receiver configured to receive the said first end of said second leg, said pivoting receiver allows the second leg to pivot to a position which is 90° to a plane defined by said rigid lateral support. |
| Claim: | 17. The ladder stabilizer of claim 16 , wherein said first pivoting receiver has a pair of opposed holes passing through the first pivoting receiver and wherein the first end of said first leg has a series of holes passing through said first end of said first leg such that when a hole in said first end of said first leg is aligned with said pair of opposed holes in said first pivoting receiver a pin passing through said aligned holes will retain said first leg to said first pivoting receiver at a fixed height and wherein said second pivoting receiver has a pair of opposed holes passing through the second pivoting receiver and wherein the first end of said second leg has a series of holes passing through said first end of said second leg such that when a hole in said first end of said second leg is aligned with said pair of opposed holes in said second pivoting receiver a pin passing through the aligned holes will retain said second leg to said second pivoting receiver at a fixed height. |
| Claim: | 18. A ladder comprising: at least one pair of legs, at least two rungs positioned between and connecting said pair of legs to one another; a ladder stabilizer secured to at least one of said rungs, said ladder stabilizer comprising: a rigid lateral support, said lateral support formed from at least one hollow tube, said hollow tube having a first end and a second end and the hollow tube having a length, the hollow tube defines an arc running from the first end to the second end; a first extension arm having a first end and a second end, said first extension arm first end positioned within said first end of said hollow tube, said first extension arm having length equal to at least one third the length of said hollow tube; a second extension arm having a first end and a second end, said second extension arm first end positioned within said second end of said hollow tube, said second extension arm having length greater than one half the length of said hollow tube; a support beam secured to said rigid lateral support said support beam has a first side and a second side, said rigid lateral support secured to said first side of the support beam; a step plate secured by a hinge to said support beam the step plate having an upper flat surface configured to extend over an upper surface of one of the rungs; a first leg having a first end and a second end, said first end of said first leg pivotally secured to said first extension arm, said second end of said first leg terminating in a foot; a second leg having a first end and a second end, said first end of said second leg pivotally secured to said second extension arm, said second end of said second leg terminating in a foot. |
| Claim: | 19. The ladder of claim 18 , wherein said rigid lateral support comprises a first hollow tube and a second hollow tube wherein each hollow tube is secured to said support beam. |
| Claim: | 20. The ladder of claim 19 , wherein said first extension arm is positioned in said first hollow tube, the first hollow tube having a length, and said second extension arm is positioned in said second hollow tube, the second hollow tube having a length. |
| Claim: | 21. The ladder of claim 20 , wherein said first extension arm has a length equal to at least half the length of said first hollow tube and said second extension arm has a length equal to at least half the length of said second hollow tube. |
| Claim: | 22. The ladder of claim 18 , wherein said hinge allows said step plate to move through a 90° range of motion with said step plate aligned in a vertical position when in a collapsed position and aligned in a horizontal position when configured to engage a step of the ladder. |
| Claim: | 23. The ladder of claim 18 , wherein said second end of said first extension arm carries a first pivoting receiver configured to receive the said first end of said first leg, said pivoting receiver allows the first leg to pivot to a position which is 90° to a plane defined by said rigid lateral support and said second end of said second extension arm carries a second pivoting receiver configured to receive the said first end of said second leg, said pivoting receiver allows the second leg to pivot to a position which is 90° to a plane defined by said rigid lateral support. |
| Claim: | 24. The ladder of claim 23 , wherein said first pivoting receiver has a pair of opposed holes passing through the first pivoting receiver and wherein the first end of said first leg has a series of holes passing through said first end of said first leg such that when a hole in said first end of said first leg is aligned with said pair of opposed holes in said first pivoting receiver a pin passing through the aligned holes will retain said first leg to said first pivoting receiver at a fixed height and wherein said second pivoting receiver has a pair of opposed holes passing through the second pivoting receiver and wherein the first end of said second leg has a series of holes passing through said first end of said second leg such that when a hole in said first end of said second leg is aligned with said pair of opposed holes in said second pivoting receiver a pin passing through the aligned holes will retain said second leg to said second pivoting receiver at a fixed height. |
| Claim: | 25. The ladder of claim 24 , wherein said pin has a body with a first end and second end and a spring centrally located within said body, said spring biases at least one ball located proximate to said second end of said pin in an outward position such that at least a portion of said ball extends beyond said body, and said pin has a release button located in said first end of said pin such that compression of said release button compresses said spring allowing for said ball to drop a distance into said pin body. |
| Claim: | 26. The ladder of claim 18 , wherein said rigid lateral support is formed from at least one curved hollow tube and said support beam has a first side and a second side, said first side has a radius of curvature which conforms to a radius of curvature of said at least one curved hollow tube and said second side is substantially straight. |
| Claim: | 27. The ladder of claim 18 , wherein said rigid lateral support comprises a first curved hollow tube and a second curved hollow tube wherein each curved hollow tube is secured to said support beam and said support beam has a first side and a second side, said first side has a radius of curvature which conforms to a radius of curvature of at least one curved hollow tube and said second side is substantially straight. |
| Claim: | 28. A ladder stabilizer comprising: a rigid lateral support, said lateral support formed from at least one hollow tube, said hollow tube having a first end and a second end; a first extension arm having a first end and a second end, said first extension arm first end positioned within said first end of said hollow tube; a second extension arm having a first end and a second end, said second extension arm first end positioned within said second end of said hollow tube; a support beam secured to said rigid lateral support said support beam has a first side and a second side, said rigid lateral support secured to said first side of the support beam; a step plate secured by a hinge to said second side of the support beam; a first leg having a first end and a second end, said first end of said first leg pivotally secured to said first extension arm by a first pivotal connection, said first pivotal connection allows the first leg to pivot along a vertical plane and along a horizontal plane; a second leg having a first end and a second end, said first end of said second leg pivotally secured to said second extension arm by a second pivotal connection, said second pivotal connection allows the first leg to pivot along a vertical plane and along a horizontal plane. |
| Claim: | 29. The ladder stabilizer of claim 28 , wherein said rigid lateral support comprises a first hollow tube, the first hollow tube having a length, and a second hollow tube, the second hollow tube having a length, wherein each hollow tube is secured to said support beam. |
| Claim: | 30. The ladder stabilizer of claim 29 , wherein said first extension arm is positioned in said first hollow tube and said second extension arm is positioned in said second hollow tube and wherein said first extension arm has a length equal to at least 30% of the length of said first hollow tube and said second extension arm has a length equal to at least 30% of the length of said second hollow tube. |
| Claim: | 31. The ladder stabilizer of claim 30 , wherein said first extension arm has a length equal to at least half the length of said first hollow tube and said second extension arm has a length equal to at least half the length of said second hollow tube. |
| Claim: | 32. A ladder stabilizer comprising: a rigid lateral support, said lateral support formed from a first curved hollow tube and a second curved hollow tube, said first curved hollow tube having a first end and a second end, said second curved hollow tube having a first end and a second end; the first hollow tube defines an arc running from the first end to the second end, the first hollow tube having a length and the first hollow tube is curved along the length of the first hollow tube; the second hollow tube defines an arc running from the first end to the second end the second hollow tube having a length and the second hollow tube is curved along the length of the second hollow tube; a first extension arm having a first end and a second end, said first extension arm first end positioned within said first end of said curved hollow tube; a second extension arm having a first end and a second end, said second extension arm first end positioned within said second end of said curved hollow tube; a support beam secured to said rigid lateral support; a step plate secured by a hinge to said support beam; a first leg having a first end and a second end, said first end of said first leg pivotally secured to said first extension arm and said first end of said first leg being height adjustable, said second end of said first leg terminating in a height adjustable and pivotal foot; a second leg having a first end and a second end, said first end of said second leg pivotally secured to said second extension arm and said first end of said second leg being height adjustable, said second end of said second leg terminating in a height adjustable and pivotal foot. |
| Claim: | 33. The ladder stabilizer of claim 32 , wherein said first extension arm is positioned in said first curved hollow tube and said second extension arm is positioned in said second curved hollow tube. |
| Claim: | 34. The ladder stabilizer of claim 33 , wherein said first extension arm has a length equal to at least half the length of said first curved hollow tube and said second extension arm has a length equal to at least half the length of said second curved hollow tube. |
| Claim: | 35. The ladder stabilizer of claim 34 , wherein said support beam has a first side and a second side, said first side has a radius of curvature which conforms to a radius of curvature of said at least one curved hollow tube and said second side is substantially straight. |
| Patent References Cited: | 549910 November 1895 Endriss 2327317 August 1943 Randall 2459437 January 1949 Kreissler 2680554 June 1954 Dakin 2868427 January 1959 Hess 2881028 April 1959 Baird 2903086 September 1959 Chubbs 2997127 August 1961 Wojtowicz 3713510 January 1973 O'Dell 3878917 April 1975 McBride 3891054 June 1975 Larson 3901354 August 1975 Grebausky 4049283 September 1977 Brookes 4147231 April 1979 Chantler et al. 4331217 May 1982 Stecklow 4359138 November 1982 Kummerlin 4433754 February 1984 Beach 4502566 March 1985 Wing 4519477 May 1985 Ralston 4872529 October 1989 Viets 4896745 January 1990 Warnelov 5242031 September 1993 Ashley 5417302 May 1995 McElfresh 5590739 January 1997 High 5664643 September 1997 Taylor, Jr. 6672427 January 2004 Sheffield 6691825 February 2004 Haig 7293630 November 2007 Trebee 7757814 July 2010 Pleadwell et al. 8220852 July 2012 Fenstemaker 8528695 September 2013 Orpia 8607932 December 2013 Cooper 8839906 September 2014 Furr 8869935 October 2014 Baglin 8979053 March 2015 Deal 9109395 August 2015 Reitz 9932771 April 2018 Bramwell 10161185 December 2018 Pascut 10619416 April 2020 Snell 20020074187 June 2002 Bendle et al. 20040216955 November 2004 Unger 20050139425 June 2005 Thomas 20050161287 July 2005 Hosp 20060054398 March 2006 Swann 20070289812 December 2007 Feemster et al. 20080185225 August 2008 Spengler 20080314682 December 2008 Cogswell et al. 20090255759 October 2009 Barnes 20100326770 December 2010 Clifford 20110017549 January 2011 Lietz 20110168492 July 2011 Johnson 20110226551 September 2011 Iverson et al. 20200149348 May 2020 Khwaja 2675882 October 1992 2182086 May 1987 WO-8302796 August 1983 WO-2012168684 December 2012 |
| Other References: | Ladder Spurs page from website www.laddersafetycompany.com. cited by applicant Power Point containing ladders. cited by applicant |
| Primary Examiner: | Morris, Taylor |
| Attorney, Agent or Firm: | McAfee & taft |
| رقم الانضمام: | edspgr.11851950 |
| قاعدة البيانات: | USPTO Patent Grants |
| الوصف غير متاح. |