Tent – canopy – umbrella – or cane – Umbrella – Inflatable
Patent
1989-10-23
1990-06-26
Scherbel, David A.
Tent, canopy, umbrella, or cane
Umbrella
Inflatable
135 24, 135 29, A45B 2516
Patent
active
049363328
ABSTRACT:
An automatic umbrella includes: a central shaft having an upper shaft telescopically mounted on a lower shaft, a rib assembly having at least a top rib and a stretcher rib supporting the top rib, an elongate extending spring inserted inside the central shaft which may be lightly operated for resetting the umbrella for restoring its elastic force for extending the shafts, the ribs and the umbrella, a plurality of restoring springs each secured in said rib assembly for normally urging and retracting the ribs, and a seesaw button seesawly formed in a grip of the shaft for selectively extending the shaft, the ribs for opening the umbrella, or for retracting the ribs for closing the umbrella. The umbrella also includes a drag rod formed in the shafts having a locking head formed on a lower end of the rod to be locked by a retraction controller for preventing a false closing operation when opening the umbrella.
REFERENCES:
patent: 3658076 (1972-04-01), Yasuda
patent: 3756258 (1973-09-01), Yoshihara
patent: 4421133 (1983-12-01), Huang
patent: 4535374 (1985-08-01), Day
patent: 4823821 (1989-04-01), Day
patent: 4825888 (1989-05-01), Su
Mai Lan
Scherbel David A.
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