Portable walkway systems

Details Portable walkway systems Portable walkway systems

1993-12-08

1995-02-14

Chin-shue, Alvin C.

Fire escape, ladder, or scaffold

Wall- or floor-attached

248235, 248246, E04G 308

Patent

active

053886631

ABSTRACT:
A scaffolding system that is based on metal clamps that can be used with on-site lumber to provide an elevated walkway. The scaffolding does not hang from the wall against which it is positioned, permitting such wall to subside during construction, as when it is filled with concrete.

REFERENCES:
patent: 26840 (1860-01-01), Scaffold
patent: 541323 (1895-06-01), Gewiss
patent: 834919 (1906-11-01), Mackie
patent: 1716904 (1929-06-01), Siderits
patent: 2116831 (1938-05-01), Hoy
patent: 2577979 (1951-12-01), Pierson
patent: 2891759 (1959-06-01), Holmboe
patent: 3698680 (1972-10-01), Shoemaker
patent: 4819900 (1989-04-01), Funk
patent: 5307899 (1994-05-01), Lubinski

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