Class 182/166 - Section extensible below prop pivot

Subclass of Class 182 - Fire escape, ladder, or scaffold
Definition: Device including at least one section extensible below the
No. of patents: 23
Last issue date: 12/06/2011

Number	Title	Issue Date
8069948	Combination ladder, ladder components and methods of manufacturing same Ladder configurations and components are provided including an outer rail assembly which is longitudinally adjustable relative to an inner rail assembly. The outer rail assembly may include a pair of spaced apart outer rails each fixedly coupled to an associated sle...	12/06/2011
7316293	Extension ladder with improved mechanism An extension ladder with improved mechanism includes a plurality of ladder sections, connection kits, locking mechanism, and transverse step portions; wherein each ladder section is a hollow rung, and the caliber of the rung becomes smaller when it is in a higher lo...	01/08/2008
7255198	Tripod extension stepladder The present invention 10 discloses a stepladder having a ladder portion 18 that is comprised of rungs 24 and includes two ladder side rails, and a support portion that includes two angularly disposed telescoping legs 20 that provide mecha...	08/14/2007
7013518	Collapsible loading ramp A collapsible loading ramp affixable to a raised surface in a non-permanent manner extending from the raised surface to the ground. The ramp is foldable by way of a hinge connecting the first ramp section to the lower ramp section. Rung units attach to the first and...	03/21/2006
7000731	Multi-material cover for a ladder rail end A cover for an end of a ladder rail includes a shell and a tread. The shell comprises at least one material, whereas the tread comprises at least one other material. The shell is sized to engage the ladder rail. The tread is engaged with the shell at least partially...	02/21/2006
6997282	Adjustable ladder A ladder is adjustable in a plurality of planes so a wide variety of sloped surfaces can be accommodated. The ladder includes non-slip surfaces on the steps and a paint can holder that can accommodate a one gallon paint can. ...	02/14/2006
6913113	Adjustable-height ladder An adjustable-height stepladder has an upper-front frame and an upper-rear frame interconnected by a top member. The upper-front frame and the upper-rear frame each have an elongate slide track. A lower-front frame, wider than the upper-front frame and positioned ce...	07/05/2005
6880675	Multifunctional adjustable ladder assembly A ladder assembly includes two symmetric support stands pivotally connected with each other. Each of the two support stands includes a main frame, an upper frame, a lower frame, a top bar, a retraction control unit, and four fixing devices. Thus, height of the ladde...	04/19/2005
6698550	Adjustable step ladder An adjustable back leg assembly provides a step ladder of simple construction for convenient use on stairs and other sloping surfaces....	03/02/2004
6206139	Folding tripod ladder having extendable legs A ladder comprises a top step, two leg assemblies mounted to the top step, and a step assembly mounted to the top step. The leg assembly and the step assembly pivot from a closed position in which the leg assemblies and the step assembly are extend vertic...	03/27/2001
5617930	Ladder assembly for a tailgate of a truck An elongated arrangement is secured to an inner surface of a tailgate of a truck in a parallel relation with the rear of the truck, the elongated arrangement having a pair of first members dispose coextensive with the elongated arrangement, equally spaced...	04/08/1997
5074378	Multi-purpose ladder with locking mechanism for extendible legs A ladder with extendible legs that may be individually and selectively, secured in the desired extent of protraction by a relatively uncomplicated locking mechanism. The locking mechanism may be incorporated in a ladder having at least a pair of support l...	12/24/1991
5062499	Side rails fastening mechanism for telescopic aluminum step ladders A side rails fastening mechanism for securing the frame fractions of the side rails of a telescopic aluminum step ladders in an extended or collapsed position, comprising an insert block fixedly secured inside each frame fraction at a lower position with ...	11/05/1991
4989692	Multi-purpose extendable and retractable ladder A ladder that includes two hinged sections that can be oriented in an inverted V-configuration for use as a step ladder, or in a straight linear configuration for use as a straight ladder. Each section of the ladder includes a number of U-shaped support u...	02/05/1991
4926964	Step/extension ladder This invention relates to a convertible step/extension ladder which allows to use one or more of extension sections with a basic A-shaped ladder frame. The extension sections are slidably mounted on legs of the frame through the use of housing/sliding rai...	05/22/1990
4854420	Securing means for a double step ladder A securing means for a double step ladder having a U-shaped element, a coupling element, a retaining rod received within the openings provided on the distal ends of the lateral walls of the U-shaped element, a flap fixed on the lateral wall of the U-shape...	08/08/1989
4719990	Step ladder for stairs A step ladder for stairs has a rear support member for providing a climbing structure, a front support member for retaining the rear support member in a substantially erect position, the front support member being hinged connected to the rear support memb...	01/19/1988
4676342	Trestle ladder A trestle ladder includes adjustable leg extensions to accommodate uneven and irregular surfaces while maintaining the ladder in proper vertical and horizontal orientation. A binding clamp is employed to retain the extension in the desired position and au...	06/30/1987
4441850	Auxiliary step for wheelchair lift An auxiliary step is provided principly for use with the type of wheelchair lift that mounts to buses and other passenger vehicles wherein the risers and horizontal panels of a step structure are extended horizontally to define a platform which can be rai...	04/10/1984
4210224	Longitudinally variable ladder A longitudinally variable ladder with at least two ladder parts which are displaceable relative to one another in their longitudinal direction, one part of which with its two struts forms a guide for the struts of the other part, which latter struts engag...	07/01/1980
4155422	Combination step, stair well and extension ladders Combination step, stair well and extension ladders are characterized by a single bracket member by which a bucket rack and the top rear section are pivoted to the front step section, the bucket rack is supported by telescoping channel members, spring-bias...	05/22/1979
4082162	A-frame ladder extender The invention is concerned with a combination comprising an A-frame ladder which comprises a pair of main side rails having parallel steps disposed therebetween, a pair of rear side rails pivotally secured with a top end thereof adjacent a top end of the ...	04/04/1978

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Class 182/166 - Section extensible below prop pivot