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Anti-slip attachment for ladders

a technology of anti-slip attachment and ladder, which is applied in the direction of scaffold accessories, construction, building aids, etc., can solve the problems of extending ladders, affecting the safety of workers, and causing injuries and deaths, and achieves the effect of high surface friction coefficien

Inactive Publication Date: 2005-06-02
CORSTON CHARLES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0017] The invention further provides a method for forming a frictional engagement between a ladder and a metal gutter, comprising the steps of mounting to a ladder a layer of resiliently compressible material having a high surface coefficient of friction against smooth metal, and resting the ladder against a metal gutter so that the layer of resiliently compressible material establishes a frictional engagement that prevents the ladder from slipping laterally along the edge of the gutter.

Problems solved by technology

Ladders in general, and extension ladders in particular, present significant safety concerns.
It is well documented that falls from ladders result in numerous injuries and deaths on an annual basis.
One particular hazard is the tendency of ladders to slip sideways when resting against gutters.
As can been seen in FIG. 1, a person 10 when cleaning or repairing a gutter 12 tends to reach out to one side or the other when working, due to the inconvenience involving in descending and moving the ladder 14 to another location, with the result that this unbalances the ladder and tends to cause it to slide laterally on the gutter and possibly topple over.
Even more dangerous is the tendency of the ladder to slip when attempting to step onto it from the roof in order to descend, when the user is facing backwards and feeling for a rung with his foot.
The frequency of this hazard is increasing due to the increasing use of aluminum (and other metal and slippery-surfaced materials) in the construction of both gutters and ladders.
These are at best only a partial solution, and become less effective as the ladder is extended to increased heights.
Moreover, the struts and braces are cumbersome and make the ladder to difficult to store or transport, and also add significant cost.

Method used

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  • Anti-slip attachment for ladders
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  • Anti-slip attachment for ladders

Examples

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second embodiment

[0042] In the second embodiment, which is illustrated in FIGS. 5-7, there are first and second clips, 50a, 50b that attach to the two rails 52a, 52b of the ladder and which engage the lip 28 of the gutter 30 in substantially the same manner as described above. The clips consequently provide separate frames on which the tape is mounted, which are in turn mountable to the ladder.

[0043] As can be seen in FIG. 7, each of the clips is formed in the shape of semi-enclosed channel. In the illustrated embodiment the channel is constructed of steel-sheet metal, however, it will be understood that plastic or other suitable materials may be used. The channel includes a comparatively wide web 54 having a flange 56 along its forward edge, the strip of foam material 58 being adhered to the outer surface thereof. A second flange 58 along the opposite edge of the web 54 is bent back parallel to the web so as to form a return 60 that defines semi enclosed U-shaped channel area 26. The inside angle b...

third embodiment

[0045] In a third embodiment, which is illustrated in FIGS. 8-12, there are two channel-shaped frames 70a, 70b (only 70a being visible in FIG. 8), that have a channel-shaped configuration and that slip over the two side rails 72a, 72b of the ladder rather than clipping onto them in the manner shown in FIGS. 5-7.

[0046] As can be seen in FIG. 9, each of the slip-on frames has a generally channel-shaped configuration, with a side web 74 and forward and rearward flanges 76, 78 with returns 80, 82, that in combination define a semi-enclosed, U-shaped channel area 84; the generally U-shaped configuration facilitates manufacture of the frames from stamped / bent sheet metal, however, it will be understood that in some embodiments that the channel areas may be fully enclosed. A strip 86 of the resiliently compressible material is mounted to the forwardly-directed face of each forward flange 76, in a manner similar to the embodiment described with regard to FIGS. 5-7. However, at the upper and...

fourth embodiment

[0050]FIG. 13 shows the invention, in which the frames 120a, 120b have a somewhat simplified configuration, with the forward and rearward flanges 122, 124 extending at right angles to the webs 126. As with the embodiments described above, the strips of resiliently compressible cushioning material 128 are adhered to the outer surfaces of the forward flanges 122. In this embodiment, however, mounting is accomplished by means of a threaded rod 130 that passes through a hollow interior of one of the staves 132 of the ladder; conventionally, the staves of aluminum ladders are hollow and open at each end so that the rod can be readily passed therethrough. First and second wing nuts 134 are mounted on the ends of the rod 130 and secure the clips to the rails of the ladder when tightened; suitably, the rod is a 20-inch length of ¼-inch ready rod, with ¼-inch wing nuts on each end. However, it will be understood that in some embodiments a nut may be used on only one end of the rod, with the ...

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Abstract

An anti-slip attachment for a ladder that forms a frictional engagement between the ladder and a metal gutter, so as to prevent the ladder from slipping laterally thereon. A layer of resiliently compressible material having a high surface coefficient of friction against smooth metal is mounted to the ladder so that it will bear against and be compressed by an edge of the gutter. The layer of resiliently compressible material may be at least one strip of resiliently compressible foam tape. The resiliently compressible material may be adhered directly to the side rails of the ladder so as to bear against the edge of a gutter when the ladder is rested thereon, or the layer or layers of resiliently compressible material may be mounted to a separate frame or bracket that is in turn mounted to the ladder itself. The anti-slip attachment helps to reduce the likelihood of fall injuries due to the ladder slipping sideways along a metal gutter during use.

Description

RELATED APPLICATIONS [0001] This application claims the benefit of U.S. Provisional Patent Application No. 60 / 524,134 filed on Nov. 20, 2003.BACKGROUND [0002] a. Field of the Invention [0003] The present invention relates generally to safety devices for ladders, and, more particularly, to an attachment for preventing ladder from slipping laterally against a gutter during use. [0004] b. Background [0005] Ladders in general, and extension ladders in particular, present significant safety concerns. It is well documented that falls from ladders result in numerous injuries and deaths on an annual basis. [0006] One particular hazard is the tendency of ladders to slip sideways when resting against gutters. As can been seen in FIG. 1, a person 10 when cleaning or repairing a gutter 12 tends to reach out to one side or the other when working, due to the inconvenience involving in descending and moving the ladder 14 to another location, with the result that this unbalances the ladder and tend...

Claims

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Application Information

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IPC IPC(8): E06C7/00E06C7/06E06C7/46E06C7/48
CPCE06C7/486E06C7/46
Inventor CORSTON, CHARLES
Owner CORSTON CHARLES
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