Supports – Brackets – Specially mounted or attached
Patent
1987-12-24
1989-05-30
Foss, J. Franklin
Supports
Brackets
Specially mounted or attached
248200, 248 1R, A63B 2902
Patent
active
048343277
ABSTRACT:
A self-adjusting climbing chock is disclosed which includes a main cable structure having a looped end and first and second cable end sections. A fixed wedge element is joined to the cable end sections, and one of the fixed wedge element faces is provided with a tapered depression. A translating wedge element, having a bearing surface which is complementary to the sliding surface of the depression, may be manually retracted against a compression spring between a first position at which the combined thickness of the fixed and translating wedge elements exceeds the maximum thickness of the fixed wedge element and a second position in which the combined thickness does not exceed the maximum thickness of the fixed wedge element. Thus, the adjustable climbing chock may be inserted into a crevice simultaneously with finger actuation of a transverse pull component to configure the wedge end of the chock into the insertion position such that subsequent release of the transverse pull component results in the spring returning the translating wedge element to a position between the first and second positions which is variable according to the thickness of the crevice at that point. In order to obtain a chock which is capable of accommodating to irregular inner crevice surfaces, the translating wedge element is preferably a spherical section cooperating with an inside cylindrical section depression. Embodiments employing a plurality of translating wedge elements are also disclosed.
REFERENCES:
patent: 4506924 (1985-03-01), Nieder
patent: 4572464 (1986-02-01), Phillips
patent: 4643378 (1987-02-01), Guthrie et al.
patent: 4715568 (1987-12-01), Best, Jr.
Cates Charles E.
Foss J. Franklin
Harrer Richard G.
Phillips James H.
Talbott David L.
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