US3508628A - Ladder with stabilizer means - Google Patents

Ladder with stabilizer means Download PDF

Info

Publication number
US3508628A
US3508628A US3508628DA US3508628A US 3508628 A US3508628 A US 3508628A US 3508628D A US3508628D A US 3508628DA US 3508628 A US3508628 A US 3508628A
Authority
US
United States
Prior art keywords
stabilizer
ladder
means
bracket
side rail
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Inventor
Charles J Conrad
Original Assignee
Charles J Conrad
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Charles J Conrad filed Critical Charles J Conrad
Priority to US76836068A priority Critical
Application granted granted Critical
Publication of US3508628A publication Critical patent/US3508628A/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06CLADDERS
    • E06C7/00Component parts, supporting parts, or accessories
    • E06C7/42Ladder feet; Supports therefor
    • E06C7/423Ladder stabilising struts

Description

April 28, 1970 c. J CONRAD 3,508,628

LADDER WITH STABILIZER MEANS Filed 001;. 17, 1968 .ZSheecs-Sheet 1 Fig./

Fig.2

Char/es J. Conrad INVENTOK A ril 28, 1970 c. J. CONRAD 3,503,628

LADDER WITH STABILIZER MEANS Filed Oct. 17, 1968 2 Sheets-Sheet 2 Fig. 4

7/ hf R?" f 44 48 Charles J. Conrad 50 INVENTOR.

United States Patent 3,508,628 LADDER WITH STABILIZER MEANS Charles J. Conrad, 1190 Bunker Hill Woods Road, Oxford, Ohio 45056 Filed Oct. 17, 1968, Ser. No. 768,360

Int. Cl. E06c l/ U.S. Cl. 182-472 I 11 Claims ABSTRACT OF THE DISCLOSURE The instant invention is generally concerned with ladders, and more particular relates to a unique stabilizer for ladders, the stabilizer normally being provided in pairs, one to each side of the ladder, whereby lateral swaying or slipping of the ladder is effectively resisted.

A particularly significant object of the instant invention resides in the provision of a stabilizer which is adjustable so as to accommodate variations in ground con ditions, and incorporates mounting means which enable it to be accommodated to ladders regardless of the widths of the side rails thereof to which the stabilizer is to be secured.

Also of significance with regard to the instant invention is the fact that the stabilizer is of a relatively simple easy to manipulate nature, while at the same time being of an extremely sturdy construction providing the ultimate in safety.

Basically, in achieving the objects of the instant invention, the stabilizer, normally one of two provided with each ladder, includes upper and lower telescopic sec tions with the lower section being in the nature of a ratch, the extension and retraction of which is controlled by a spring-loaded pawl. The upper section is hingedly engaged with a side rail of a ladder through a connector which includes an adjustable ladder-engaging bracket and a stabilizer-engaging bracket which interlocks with the ladder bracket so as to provide a positive non-rotating engagement therewith while at the same time providing for the lateral swinging of the stabilizer, this swinging being controlled by means of a folding brace which looks the stabilizer in its outmost position and allows an inward swinging of the stabilizer to a clip-mounted position adjacent the side rail.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

FIGURE 1 is a front elevational view of an inclined ladder having two stabilizers mounted thereon and cooperating therewith;

FIGURE 2 is a side elevational view of the stabilizer braced ladder of FIGURE 1;

FIGURE 3 is an enlarged front elevational view of a portion of the ladder with a stabilizer mounted thereon, various sections being broken away for purposes of illustration;

ice

FIGURE 4 is a cross-sectional detail taken substantially on a plane passing along line 4-4 in FIGURE 3;

FIGURE 5 is a cross-sectional view taken substantially on a plane passing along line 5-5 in FIGURE 3;

FIGURE 6 is an exploded perspective view of the connector utilized in pivotally mounting the stabilizer on the ladder side rail; and

FIGURE 7 is a cross-sectional detail taken substantially on a plane passing along line 77 in FIGURE 3.

Referring now more specifically to the drawings, reference numeral 10 is used to generally designate the stabilizer comprising the instant invention, such being mountable on the side rail 12 of any conventional ladder 14, for example the sectional ladder illustrated in FIGURES l and 2. As will be appreciated from FIGURE 1, in the normal situation, two of the stabilizers 10 will be utilized, one to each side of the ladder 14.

The stabilizer 10 itself consists of upper and lower telescopic sections 16 and 18. With reference to the crosssectional view of FIGURE 5 in particular, it will be noted that the inner section 18 is in the nature of a channel bar slidably received within the section 16 which is slightly larger than the section 18 and incorporates i11- turned flanges 20 for a retention of the section 18 there n while still allowing for a free sliding or telescopic movement of the section 18 within the section 16.

It is contemplated that a ratchet type arrangement be utilized for effecting a locking of the lower section 18 in any desired extended position. As such, the lower sec tion is provided, on the rear or web surface thereof, with a series of teeth or notches 22, the section 18 thus in effect constituting a ratch. The pawl 24 operably engageable therewith is mounted on the web or back portion 26 of the outer section 16 by means of a pivot pin 28 extending through the pawl 24 and engaged with a pair of upstanding ears 30 welded to the upper section web 26. An elongated handle 32 extends laterally from the pawl 24 and an expanded coiled biasing spring 34 is engaged between the handle 32 and the web portion 26 so as to efiect an outward biasing of the handle 32 and a corresponding inward biasing of the pawl 24 into the engagement with the ratch or lower section 18. It will of course be appreciated that an appropriate opening 36 is provided through the web portion 26 of the outer section 16 so as to enable a passage of ahe pawl 24 therethrough, The pawl 24 is provided with a camming face and in effect acts as a one-way stop whereby the lower section 18 can be extended relative to the upper section 16 with the pawl 24 automatically riding over the teeth or notches, while a retraction of the lower section 18 into the upper section 16 is specifically precluded by the spring-biased pawl 24. When a retraction of the section 18 is desired, the pawl 24 must be manually released by moving the handle 32 against the spring 34, thereby raising the pawl 24 and allowing for a free movement of the teeth inwardly thereby.

The upper end of the stabilizer 10 is engaged or engageable with an adjoining ladder side rail 12 by means of a connector 38. This connector 38 is uniquely adapted to accommodate ladder side rails 12 of varying widths, as well as rails of different materials, such as metal or wood rails. Noting FIGURES 4 and 6 in particular, the connector 38 includes a first rail engaging two piece or two section bracket 40 and a second generally U-shaped stabilizer engaging bracket 42. The two sections 44, which comprise the rail engaging bracket 38, consist of, in each instance, an elongated plate 46 which engages across the outer side of the side rail 12, one plate 46 overlapping the other, and a laterally directed flange 48 integral with one end of the plate 46 and positionable against either the front or rear edge of the side rail 12,

the two flanges 48 engaging the opposite edges of the side rail 12 so as to in effect sandwich the side rail 12 therebetween. In addition, each of the plates 46 includes a centrally located longitudinally elongated bolt receiving slot 50 therein through which an elongated mounting bolt 52 is engaged. This bolt 52, noting FIGURES 3 and 4, extends through the overlapped plates 46 and through an aperture in the side rail 12 for a clamping of the connector 38 thereagainst by means of an appropriate nut 54 threaded on the rail piercing end of the bolt 52. Inasmuch as the particular ladder 14 illustrated in the drawings is a metal ladder of the type wherein the side rails 12 are in the nature of -I-beams, as will be best noted in FIGURE 4, an appropriate spacer 56 is provided between the front and rear flanges of the I-beam ladder rail, this spacer being of suflicient thickness so as to bear against the web of the rail and project outwardly therefrom to the outer extremity of the rail flanges whereby a positive seat for the overlapped bracket plates 46 is provided. In using the connector 38 for a mounting of the stabilizer on a wooden ladder, it will of course be appreciated that the spacer 56 will not be required.

The stabilizer engaging bracket 42 itself includes a transversely elongated web 58 which seats against the outermost slotted plate 46 and which in turn includes an elongated centrally located projecting rib or aligned pair of ribs 60 which are of a size so as to snugly seat Within the aligned slots 50 whereby a positive non-rotational engagement of the bracket 42 with the bracket 40 will be effected. In addition, the bracket web 58 is centrally apertured, such in fact extending centrally through the rib 60 so as to define two rib sections, for the reception of the mounting bolt 52 therethrough, the head of the bolt 52 engaging against the face of the web 58 opposed from the rib 60. In this manner, it will be appreciated that the bolt 52 extends through both brackets 40 and 42 as well as through the side rail so as to, upon a proper mounting of the nut 54, fixedly mount the entire connector 38. With further reference to the stabilizer mounting bracket 42, such includes a pair of laterally projecting parallel ear-like flanges 62 provided with a pair of aligned apertures 64 therethrough for the reception of an appropriate pivot pin or bolt 66 which is received through the upper portion of the upper stabilizer section 16 which is in turn positioned bet-ween the pin receiving cars 62 on the bracket 42 whereby a pivotal mounting of the stabilizer 10 is effected.

Located at approximately mid-height relative to the stabilizer 10 is a folding cross brace 68 formed of a pair of pivotally interconnected sections 70 and 72. The section 70 has the outer end thereof appropriately pinned to the upper stabilizer section 16, while the section 72 has the free or outer end thereof pivotally engaged with the ladder side rail 12 through the utilization of a hingetype connector 74 which is a duplicate, normally on a smaller scale, of the connector 38, including the adjustable rail engaging bracket and the U-shaped bracket which is mounted thereon through a common mounting bolt and the slot received rib. The brace 68, as will be appreciated from the two positions thereof shown in FIGURE 3, moves between a horizontally extended position, maintained in this position by an appropriate stop lug 76, wherein the stabilizer 10 is positioned in a laterally swung relationship relative to the side rail 12 and rigidly "braced in this position, and a collapsed upwardly folded position wherein the stabilizer 10 is swung inwardly parallel to the side rail 12. In the inwardly swung position of the stabilizer 10, the lower ratch section 18 will be retracted upwardly and the lower portion of the stabilizer 10, normally the lower end portion of the upper section 16 of the stabilizer 10, will be secured within an appropriate clip 78 bolted to the ladder side rail 12 so as to project laterally therefrom. This bracket, noting FIGURES 3 and 7 in particular, will include a pair of opposed spring side flanges 80 which are sprung slightly outward as the stabilizer moves therebetween and which form a clamping elfect on the stabilizer. In addition, a horizontal reduced width bottom flange 82 is provided, this flange 82 being received within the generally channelshaped configurations of the two sections 16 and 18 so as to centrally locate and more firmly clamp the stabilizer 10.

From the foregoing, it will be appreciated that a unique stabilizer construction has been defined, such including telescoping ratchet controlled sections for accommodating itself in a ladder stabilizing manner to various ground irregularities, the lowermost stabilizer section also including an appropriately mounted enlarged foot 84. In addition, unique connector means are utilized so as to positively engage the upper end of the stabilizer with the side rail of a ladder regardless of the width thereof, of course within suitable limits, the connector in effect consisting of two interlockable brackets, one adjustably engaging the ladder side rail, and the other pivotally mounting the stabilizer and non-rotatably engaging the first bracket. This type of connector is also utilized in conjunction with a folding brace provided on the stabilizer so as to also accommodate the brace to the particular side rail on which the stabilizer is mounted.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention.

What is claimed as new is as follows:

1. A ladder stabilizer comprising upper and lower elongated telescopically connected sections, said sections being selectively longitudinally adjustable relative to each other, means for releasably locking said sections in any of a plurality of longitudinally adjusted positions, connector means for pivotally connecting the upper end of said stabilizer to a ladder side rail, said connector means including first bracket means for engagement with a ladder side rail, said first bracket means being adjustable for the accommodation of different width side rails, said first bracket means comprising two members, each member including a flat elongated plate positionable in overlying relation to the other, a laterally directed flange on each of said plates, said laterally directed flanges being positioned in parallel spaced relation to each other for reception of a ladder side rail therebetween, said plates being longitudinally slidable one on the other to vary the spacing between the flanges and thereby provide for the accommodation of different width ladder side rails between said flanges, means for locking said members to each other and to a ladder side rail in an adjusted position, each of said plates including an elongated centrally located slot therethrough, said means for locking said members to each other and to a ladder side rail comprising an elongated bolt engaged through said elongated plate slots for reception through a ladder side rail, said connector means including a second bracket means for engagement with the stabilizer, said second bracket means including means for pivotally suspending said stabilizer therefrom, said bolt engaging through said second bracket means for a locking of said second bracket means to said first bracket means, and positioning means on said second bracket means, said positioning means projecting from said second bracket means and engaging said first bracket means for precluding rotational movement therebetween.

2. The construction of claim 1 wherein said positioning means comprises elongated rib means engageable within the elongated slots provided on the plates of the first bracket means,

3. The construction of claim 2 including an elongated sectional brace pivotally engaged with said stabilizer and projecting laterally therefrom, and an adjustable connector mounted on the outer end of said brace for selective engagement with a ladder side rail.

4. The construction of claim 3 including clip means mountable on a ladder side rail in conjunction with the stabilizer and selectively engageable with said stabilizer for a releasable securing thereof.

5. A ladder stabilizer comprising upper and lower elongated telescopically connected sections, said sections being selectively longitudinally adjustable relative to each other, means for releasably locking said sections in any of a plurality of longitudinally adjusted positions, connector means for pivotally connecting the upper end of said stabilizer to a ladder side rail, said connector means including first bracket means for engagement with a ladder side rail, said first bracket means being adjustable for the accommodation of different width side rails, said connector means including second bracket means, said second bracket means including means pivotally suspending said stabilizer therefrom, and positioning means rigid therewith and projecting therefrom for a non-rotatable engagement of the second bracket means with the first bracket means.

6. The construction of claim 5 wherein the means for releasably locking the elongated stabilizer sections in longitudinally adjusted positions is in the nature of a ratch and pawl, one of said sections constituting the ratch with the pawl being mounted on the other section and spring-loaded for selective engagement with the ratch section.

7. In combination with a ladder including opposed side rails, at least one ladder stabilizer, connector means pivotally mounting one end of said stabilizer on one of said ladder side rails at an elevated position on said ladder, said stabilizer including a pair of telescopically related sections selectively longitudinally extensible and contractable relative to each other, said sections constituting an upper section and a lower section, said lower section being in the nature of a ratch, pawl means mounted on the upper section and operatively engageable with the ratch for a locking thereof in an adjusted position relative to the upper section, a folding brace pivotally engaged with said stabilizer and the adjoining ladder side rail for a bracing of the stabilizer in an outwardly swung ladder bracing position, said connector means including first and second bracket means, said first bracket means being engaged with said one of said latter side rails and being adjustable for the accommodation of different width side rails, said second bracket means including means pivotally suspending said stabilizer therefrom, and positioning means rigid with said second bracket means and projecting therefrom into a non-rotatable engagement with the first bracket means whereby rotational movement between the first bracket means and second bracket means is precluded.

8. An elongated rigid ladder stabilizer, connector means for pivotally connecting the upper end of said stabilizer to a ladder side rail, said connector means including first bracket means for engagement with a ladder side rail, said first bracket means being adjustable for the accommodation of difl'erent width side rails, said connector means also including second bracket means, said second bracket means including means pivotally suspending said stabilizer therefrom, and positioning means rigid therewith and projecting therefrom for a non-rotatable engagement of the second bracket means with the first bracket means.

9. The construction of claim 8 wherein said first bracket means comprises two members, each member including a flat elongated plate positionable in overlying relation to the other, a laterally directed flange on each of said plates, said laterally directed flanges being positioned in parallel spaced relation to each other for reception of a ladder side rail therebetween, said plates being longitudinally slidable one on the other to vary the spacing between the flanges and thereby provide for the accommodation of different width ladder side rails between said flanges, and means for locking said members to each other and to a ladder side rail in an adjusted position.

10. The construction of claim 9 wherein each of said plates includes an elongated centrally located slot therethrough, said means for locking said members to each other and to a ladder side rail comprising an elongated bolt engaged through said elongated plate slots for reception through a ladder side rail.

11. The construction of claim 10 wherein said positioning means comprises elongated rib means engageable within the elongated slots provided on the plates of the first bracket means.

References Cited UNITED STATES PATENTS 1,069,000 7/1913 Giles 248226.2 1,496,201 6/1924 Baxter 182172 1,983,670 12/1934 Knight 248228 3,053,494 9/1962 Stoll 248-228 FOREIGN PATENTS 20,934 10/1898 Great Britain.

195,584 4/1938 Switzerland. 1,467,900 12/1966 France.

REINALDO P. MACHADO, Primary Examiner

US3508628D 1968-10-17 1968-10-17 Ladder with stabilizer means Expired - Lifetime US3508628A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US76836068A true 1968-10-17 1968-10-17

Publications (1)

Publication Number Publication Date
US3508628A true US3508628A (en) 1970-04-28

Family

ID=25082261

Family Applications (1)

Application Number Title Priority Date Filing Date
US3508628D Expired - Lifetime US3508628A (en) 1968-10-17 1968-10-17 Ladder with stabilizer means

Country Status (1)

Country Link
US (1) US3508628A (en)

Cited By (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3786900A (en) * 1972-02-25 1974-01-22 P Olsen Laterally stabilized stepladder
US3933221A (en) * 1971-12-17 1976-01-20 Sorenson Virgil H Ladder adjusting and stabilizing apparatus
US4011926A (en) * 1976-04-12 1977-03-15 White Metal Rolling & Stamping Corporation Stability stepladders
US4207886A (en) * 1979-04-13 1980-06-17 Sorenson Virgil H Ladder adjusting and stabilizing apparatus
US4244446A (en) * 1978-10-20 1981-01-13 Mair George R Adjustable ladder support
GB2143884A (en) * 1983-07-29 1985-02-20 Stephens & Carter Ltd Scaffolding towers
GB2146688A (en) * 1983-07-12 1985-04-24 John Claude Holt Ladder stabilizers
US4641729A (en) * 1985-10-31 1987-02-10 Beck Andrew C Method and apparatus for stabilizing a ladder
US4655322A (en) * 1986-07-09 1987-04-07 Mittanck Leon R Clamp for safety leg of a ladder, and ladder equipped therewith
US4798262A (en) * 1986-09-12 1989-01-17 Paul Margolies Tripodal support
US4872529A (en) * 1989-01-11 1989-10-10 Viets Michael I Ladder stabilizer assembly
US5086876A (en) * 1991-04-26 1992-02-11 Severson Gary E Foot actuated ladder brace
US5511632A (en) * 1994-07-25 1996-04-30 Ermis; Jerry J. Ladder with auxiliary support
US5715908A (en) * 1995-01-09 1998-02-10 Sager; Scott E. Ladder extension
US5868222A (en) * 1994-10-19 1999-02-09 Charbonneau; Francois Ladder stabilizers
GB2329212A (en) * 1997-07-30 1999-03-17 Raymond Lewis Stephens Ladder stabilising device
GB2329414A (en) * 1997-08-23 1999-03-24 Iain Hume Ladder stabilising arrangement
US6419047B1 (en) * 1999-08-11 2002-07-16 Harold Frederick Adshead Portable ladder having resistance to slippage
FR2819533A1 (en) * 2001-01-18 2002-07-19 Duarib Supporting and stabilising leg for ladder or scaffolding has telescopic sections and sprung plate lock held automatically in locked position
US6672427B1 (en) * 1999-03-27 2004-01-06 Sandpiper Construction Limited Ladder base stabiliser
US6749041B1 (en) * 2002-12-23 2004-06-15 Larry S. Hutchings Joist scaffold unit
US20040134714A1 (en) * 2003-01-15 2004-07-15 Spengler Robert G. Ladder stabilizers
US20040231921A1 (en) * 2003-04-09 2004-11-25 Ramirez Paul V. Outrigger stabilizer and ladder combination
US20060032707A1 (en) * 2004-08-10 2006-02-16 Pasquale Sais Ladder stabilizer
US20060054398A1 (en) * 2004-08-27 2006-03-16 Swann Jeffrey J Ladder stabilizer
US20060086570A1 (en) * 2002-10-15 2006-04-27 Wollenberg Skye L Ladder stabilizer attachment apparatus and methods
US20060231334A1 (en) * 2005-04-18 2006-10-19 Hall Bill R Stepladder stabilizer
US7163084B1 (en) * 2005-06-07 2007-01-16 Blehm Berle G Adjustable ladder stabilizer
US20070181370A1 (en) * 2006-02-06 2007-08-09 Stephen Kemp-Banks Stabilized ladder
US7255198B1 (en) 2004-10-25 2007-08-14 Jennhwa Alan Lo Tripod extension stepladder
US7293630B1 (en) * 2006-05-10 2007-11-13 Frank Trebec Ladder stabilization device
US20080000721A1 (en) * 2005-10-20 2008-01-03 Clifton Deal Ladder safety device
US20080185225A1 (en) * 2003-01-15 2008-08-07 Spengler Robert G Step ladder stabilizers
US20090107765A1 (en) * 2007-10-30 2009-04-30 Clyde Germond Extension ladder stabilizer
US20100147623A1 (en) * 2008-12-17 2010-06-17 Pocos Kevin L Ladder stabilization system
US20100243375A1 (en) * 2009-03-24 2010-09-30 Gaut Ii John William Stabilizing device and apparatus
US20100252364A1 (en) * 2009-04-03 2010-10-07 Vestal Floyd Lavern Collapsible safe ladder
US20110017548A1 (en) * 2009-04-03 2011-01-27 Jeffrey Green Collapsible safe ladder
WO2012033948A1 (en) * 2010-09-08 2012-03-15 Lock N Climb, Llc Collapsible safe ladder
US20140083799A1 (en) * 2011-05-23 2014-03-27 Steve Evans Ladder levelling and stabilising device
US9151115B1 (en) * 2014-02-13 2015-10-06 Michael Forte, Jr. Stabilized ladder assembly
USD745191S1 (en) 2014-05-27 2015-12-08 Lock N Climb, Llc Ladder
US20150354276A1 (en) * 2014-05-19 2015-12-10 Lock N Climb, Llc Collapsible ladder
US20160090785A1 (en) * 2013-01-24 2016-03-31 Wing Enterprises, Incorporated Adjustable ladders and related components
JP2016153547A (en) * 2015-02-20 2016-08-25 施昌邑 A-shaped aluminum stepladder fall prevention device
AU2007229411C1 (en) * 2006-10-23 2017-05-18 Gauci, John G. A Stabilizer for a Ladder
US10047559B2 (en) * 2016-09-07 2018-08-14 Vare Invent AB Platform ladder apparatus
US10107035B1 (en) * 2015-10-19 2018-10-23 Philip F. Lanzafame Ladder Stabilizer
US20180340371A1 (en) * 2017-05-26 2018-11-29 John Georges Ladder support system and method
EP3524770A1 (en) 2018-02-07 2019-08-14 CDH Group System for blocking a tube, and stabiliser provided with such a system
US10519716B2 (en) * 2017-05-16 2019-12-31 George Saxby Ladder support attachment

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB189820934A (en) * 1898-10-05 1898-12-03 John Francis Flood Step Ladder Support.
US1069000A (en) * 1913-01-21 1913-07-29 Edgar Giles Window-shelf bracket.
US1496201A (en) * 1922-01-11 1924-06-03 Russell O Webster Self-supporting extension ladder
US1983670A (en) * 1931-02-05 1934-12-11 Knight Julian Gordon Outlet box support
CH195584A (en) * 1937-05-18 1938-02-15 Otto Golder extendable foot ladder bar.
US3053494A (en) * 1960-04-15 1962-09-11 Daniel Woodhead Company Hanger
FR1467900A (en) * 1965-12-20 1967-02-03 Security device for ladders

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB189820934A (en) * 1898-10-05 1898-12-03 John Francis Flood Step Ladder Support.
US1069000A (en) * 1913-01-21 1913-07-29 Edgar Giles Window-shelf bracket.
US1496201A (en) * 1922-01-11 1924-06-03 Russell O Webster Self-supporting extension ladder
US1983670A (en) * 1931-02-05 1934-12-11 Knight Julian Gordon Outlet box support
CH195584A (en) * 1937-05-18 1938-02-15 Otto Golder extendable foot ladder bar.
US3053494A (en) * 1960-04-15 1962-09-11 Daniel Woodhead Company Hanger
FR1467900A (en) * 1965-12-20 1967-02-03 Security device for ladders

Cited By (58)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3933221A (en) * 1971-12-17 1976-01-20 Sorenson Virgil H Ladder adjusting and stabilizing apparatus
US3786900A (en) * 1972-02-25 1974-01-22 P Olsen Laterally stabilized stepladder
US4011926A (en) * 1976-04-12 1977-03-15 White Metal Rolling & Stamping Corporation Stability stepladders
US4244446A (en) * 1978-10-20 1981-01-13 Mair George R Adjustable ladder support
US4207886A (en) * 1979-04-13 1980-06-17 Sorenson Virgil H Ladder adjusting and stabilizing apparatus
GB2146688A (en) * 1983-07-12 1985-04-24 John Claude Holt Ladder stabilizers
GB2143884A (en) * 1983-07-29 1985-02-20 Stephens & Carter Ltd Scaffolding towers
US4641729A (en) * 1985-10-31 1987-02-10 Beck Andrew C Method and apparatus for stabilizing a ladder
US4655322A (en) * 1986-07-09 1987-04-07 Mittanck Leon R Clamp for safety leg of a ladder, and ladder equipped therewith
US4798262A (en) * 1986-09-12 1989-01-17 Paul Margolies Tripodal support
US4872529A (en) * 1989-01-11 1989-10-10 Viets Michael I Ladder stabilizer assembly
US5086876A (en) * 1991-04-26 1992-02-11 Severson Gary E Foot actuated ladder brace
US5511632A (en) * 1994-07-25 1996-04-30 Ermis; Jerry J. Ladder with auxiliary support
US5868222A (en) * 1994-10-19 1999-02-09 Charbonneau; Francois Ladder stabilizers
US5715908A (en) * 1995-01-09 1998-02-10 Sager; Scott E. Ladder extension
GB2329212A (en) * 1997-07-30 1999-03-17 Raymond Lewis Stephens Ladder stabilising device
GB2329212B (en) * 1997-07-30 2001-12-19 Raymond Lewis Stephens Improvements relating to ladder stabilising device
GB2329414A (en) * 1997-08-23 1999-03-24 Iain Hume Ladder stabilising arrangement
US6672427B1 (en) * 1999-03-27 2004-01-06 Sandpiper Construction Limited Ladder base stabiliser
US6419047B1 (en) * 1999-08-11 2002-07-16 Harold Frederick Adshead Portable ladder having resistance to slippage
FR2819533A1 (en) * 2001-01-18 2002-07-19 Duarib Supporting and stabilising leg for ladder or scaffolding has telescopic sections and sprung plate lock held automatically in locked position
US7789199B2 (en) * 2002-10-15 2010-09-07 Trade Associates, Inc. Ladder stabilizer attachment apparatus and methods
US20060086570A1 (en) * 2002-10-15 2006-04-27 Wollenberg Skye L Ladder stabilizer attachment apparatus and methods
US6749041B1 (en) * 2002-12-23 2004-06-15 Larry S. Hutchings Joist scaffold unit
US20040134714A1 (en) * 2003-01-15 2004-07-15 Spengler Robert G. Ladder stabilizers
US7216742B2 (en) * 2003-01-15 2007-05-15 Spengler Robert G Ladder stabilizers
US20080185225A1 (en) * 2003-01-15 2008-08-07 Spengler Robert G Step ladder stabilizers
US20040231921A1 (en) * 2003-04-09 2004-11-25 Ramirez Paul V. Outrigger stabilizer and ladder combination
US20060032707A1 (en) * 2004-08-10 2006-02-16 Pasquale Sais Ladder stabilizer
US7093690B2 (en) * 2004-08-27 2006-08-22 Swann Jeffrey J Ladder stabilizer
US20060054398A1 (en) * 2004-08-27 2006-03-16 Swann Jeffrey J Ladder stabilizer
US7255198B1 (en) 2004-10-25 2007-08-14 Jennhwa Alan Lo Tripod extension stepladder
US20060231334A1 (en) * 2005-04-18 2006-10-19 Hall Bill R Stepladder stabilizer
US7163084B1 (en) * 2005-06-07 2007-01-16 Blehm Berle G Adjustable ladder stabilizer
US20080000721A1 (en) * 2005-10-20 2008-01-03 Clifton Deal Ladder safety device
US20070181370A1 (en) * 2006-02-06 2007-08-09 Stephen Kemp-Banks Stabilized ladder
US20070261918A1 (en) * 2006-05-10 2007-11-15 Frank Trebec Ladder stabilization device
US7293630B1 (en) * 2006-05-10 2007-11-13 Frank Trebec Ladder stabilization device
AU2007229411C1 (en) * 2006-10-23 2017-05-18 Gauci, John G. A Stabilizer for a Ladder
US20090107765A1 (en) * 2007-10-30 2009-04-30 Clyde Germond Extension ladder stabilizer
US20100147623A1 (en) * 2008-12-17 2010-06-17 Pocos Kevin L Ladder stabilization system
US20100243375A1 (en) * 2009-03-24 2010-09-30 Gaut Ii John William Stabilizing device and apparatus
US9038776B2 (en) 2009-04-03 2015-05-26 Lock N Climb, Llc Collapsible safe ladder
US20100252364A1 (en) * 2009-04-03 2010-10-07 Vestal Floyd Lavern Collapsible safe ladder
US8485316B2 (en) 2009-04-03 2013-07-16 Lock N Climb, Llc Collapsible safe ladder
US20110017548A1 (en) * 2009-04-03 2011-01-27 Jeffrey Green Collapsible safe ladder
WO2012033948A1 (en) * 2010-09-08 2012-03-15 Lock N Climb, Llc Collapsible safe ladder
US20140083799A1 (en) * 2011-05-23 2014-03-27 Steve Evans Ladder levelling and stabilising device
US20160090785A1 (en) * 2013-01-24 2016-03-31 Wing Enterprises, Incorporated Adjustable ladders and related components
US9151115B1 (en) * 2014-02-13 2015-10-06 Michael Forte, Jr. Stabilized ladder assembly
US20150354276A1 (en) * 2014-05-19 2015-12-10 Lock N Climb, Llc Collapsible ladder
USD745191S1 (en) 2014-05-27 2015-12-08 Lock N Climb, Llc Ladder
JP2016153547A (en) * 2015-02-20 2016-08-25 施昌邑 A-shaped aluminum stepladder fall prevention device
US10107035B1 (en) * 2015-10-19 2018-10-23 Philip F. Lanzafame Ladder Stabilizer
US10047559B2 (en) * 2016-09-07 2018-08-14 Vare Invent AB Platform ladder apparatus
US10519716B2 (en) * 2017-05-16 2019-12-31 George Saxby Ladder support attachment
US20180340371A1 (en) * 2017-05-26 2018-11-29 John Georges Ladder support system and method
EP3524770A1 (en) 2018-02-07 2019-08-14 CDH Group System for blocking a tube, and stabiliser provided with such a system

Similar Documents

Publication Publication Date Title
US3336999A (en) Hunting stand
US3498410A (en) Boat ladder
US3348632A (en) Climbing device
US3603431A (en) Ladder and support bracket therefor
US3515406A (en) Sliding retractable porch for camper bodies
US3033309A (en) Retractible stepladder for vehicles
US4394887A (en) Ladder standoff device
US4742888A (en) Folding ladder stand
US2327317A (en) Attachment for ladders
US4947961A (en) Step for attachment to a wheel or bumper
US3385399A (en) Ladder and hanger frame assembly, and reversibility and portability features therein
US3392990A (en) Retractable camper body door step
US4182431A (en) Combination extension and step ladder rungs therefor
US3853369A (en) Folding tailgate step
CA1219571A (en) Safety ladder
US1285817A (en) Ladder attachment.
US7025174B1 (en) Truck ladder
US2174891A (en) Ladder attachment
US3878917A (en) Adjustable ladder support attachment
US2551345A (en) Portable stairway
CA2326016C (en) Ladder stabilizer
US4053028A (en) Apparatus suitable for use as stairways, stepladders and the like
US3022037A (en) Adjustable chair seat
US5242031A (en) Ladder accessory
EP1108108B1 (en) Anti-slip device for ladders