Tent – canopy – umbrella – or cane – Umbrella – Self-opening and closing
Patent
1975-12-29
1977-04-26
Blix, Trygve M.
Tent, canopy, umbrella, or cane
Umbrella
Self-opening and closing
61 65, 135 6, B63B 1702
Patent
active
040192121
ABSTRACT:
A boat cover apparatus that includes a boat lift assembly mounted on a main frame for lifting a boat above the level of the water, a cover assembly that includes a cover frame having a subframe of a size and shape that is greater than the maximum horizontal dimensions of the boat to be covered, frame members secured to and extending above the subframe, a collapsible cover having outer peripheral edges removably secured to the subframe and springs that are secured to the frame members and to portions of the cover substantial distances inwardly of the peripheral edges thereof to support the portions to which they are secured at a higher elevation than the subframe whereby when the subframe is moved to a lower elevation than the boat, the cover will extend upwardly and inwardly of the subframe to abut against the upper peripheral edge portion of the boat, and a cable assembly mounted on the main frame and secured to the cover assembly for selectively elevating the cover assembly to an elevation substantially above that of the boat and alternately lowering the cover assembly to an elevation that the subframe is at a lower elevation than the upper peripheral edge portion of the boat.
REFERENCES:
patent: 1780322 (1930-11-01), Tsuji
patent: 2708346 (1955-05-01), Smith
patent: 2930387 (1960-03-01), Streich et al.
patent: 3077742 (1963-02-01), Brown
patent: 3169644 (1965-02-01), Gudbersen
Blix Trygve M.
Goldstein Stuart M.
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