Tent – canopy – umbrella – or cane – Umbrella
Reexamination Certificate
1999-01-12
2001-04-03
Friedman, Carl D. (Department: 3635)
Tent, canopy, umbrella, or cane
Umbrella
C135S025400, C135S098000, C428S106000
Reexamination Certificate
active
06209556
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates generally to an umbrella skeleton, and more particularly to an umbrella skeleton which is made of a composite material.
BACKGROUND OF THE INVENTION
The conventional umbrella is generally composed of a shade of cloth, which is stretched over a foldable radial frame supported by a shaft of a metal material. The metal shaft is conductive to electricity and is thus prone to produce static electricity at the time when the umbrella is used in the rainy day. The user of the conventional umbrella is therefore vulnerable to electric shock. In addition, the metal shaft gives an added weight to the umbrella and rusts easily.
SUMMARY OF THE INVENTION
It is the primary objective of the present invention to provide an umbrella skeleton which is made of a composite material to prevent the user of the umbrella from being subjected to static electric shock.
It is another objective of the present invention to provide an umbrella skeleton which is made of a composite material and is relatively light in weight.
It is still another objective of the present invention to provide an umbrella skeleton which is made of a composite material to give a user thereof a better grip sense.
The objective, features and functions of the present invention will be readily understood upon a thoughtful deliberation of the following detailed description of the present invention with reference to the accompanying drawings.
REFERENCES:
patent: 4607653 (1986-08-01), Hermanson
patent: 4766919 (1988-08-01), Crates
patent: 4928718 (1990-05-01), Apple
patent: 4993445 (1991-02-01), Dubinsky
patent: 5020557 (1991-06-01), Apple
patent: 5167274 (1992-12-01), Belmonte
patent: 5217221 (1993-06-01), Baum
Browdy and Neimark
Friedman Carl D.
Yip Winnie
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