Tent – canopy – umbrella – or cane – Canes – sticks – crutches – and walking aids – Walker type
Patent
1983-09-06
1987-11-03
Feyrer, James R.
Tent, canopy, umbrella, or cane
Canes, sticks, crutches, and walking aids
Walker type
135DIG9, 403233, A01H 300
Patent
active
047037695
ABSTRACT:
This invention is a lightweight, universal connector that joins stringers at various angles. The connectors 10 are fabricated from fiber-epoxy resin strips that wrap around stringers 30 and have ends, tabs 16 and 18, which extend in one general direction. The inside surface of the first tab 16 lies on a plane defined by the stringers being joined, and the second tab 18 is separated from the first tab 16 by a distance equal to their thickness. Stringers 30 of different shapes and sizes are joined by alternately bonding the first tab 16 of one connector between the first 16 and second 18 tabs of another connector. Tee-joints are formed by using web elements 41 and 42 which each partially wrap around a stringer 3010 and have tabs 411 and 421 which are offset, and are bonded between tabs 16 and 18 of universal connectors 109 and 1010 bonded to another stringer 309. Sharp corners are trimmed from the tabs so that a gusset area remains between the stringers for support. Acute angle through obtuse angle joints are formed by trimming those edges of the tabs which lie against the stringers.
A specific application of the invention is a Walker 60, utilized by handicapped individuals, fabricated from composite materials that is 40% lighter than similar metallic structures.
REFERENCES:
patent: 1570307 (1926-01-01), Kirby
patent: 1760066 (1930-05-01), Jones
patent: 2658776 (1953-11-01), Wilcox
patent: 2862544 (1958-12-01), Lilja
patent: 3030124 (1962-04-01), Holloway
patent: 3315994 (1967-04-01), Rifken
patent: 3442276 (1969-05-01), Edwards et al.
patent: 3902732 (1975-09-01), Fosha, Jr. et al.
patent: 4160607 (1979-07-01), Reichow
patent: 4190283 (1980-02-01), Boucher
patent: 4298016 (1981-11-01), Garelick
patent: 4314576 (1982-02-01), McGee
patent: 4526348 (1985-07-01), Cammack
Aluminum Walkers, Winchester Walker Company, 1954.
Feyrer James R.
Helfrich George F.
Manning John R.
The United States of America as represented by the Administrator
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