Tent – canopy – umbrella – or cane – Umbrella – Mechanically operated
Patent
1992-12-07
1994-02-08
Friedman, Carl D.
Tent, canopy, umbrella, or cane
Umbrella
Mechanically operated
135 39, 135 41, A45B 1100
Patent
active
052841715
ABSTRACT:
An improved sunshade opening and supporting device is provided with a rack-like member disposed on the main shaft of a sunshade at a section thereof over which the runner of the sunshade travels during the opening and closing of the sunshade; the rack-like member is equipped with a plurality of consecutive Z-shaped teeth each having an oblique face; a horizontal stop piece is disposed at the topmost end of the rack-like member. A groove is disposed on the inner wall of the slidable runner so as to permit the runner to be slidably engaged with the rack-like member; and a cavity is disposed on the wall of the groove of the runner with a spring housed therein. One end of the spring Abuts against a restraint flange of a supporting pin and the other end is limited by a lid secured at one end of the open-ended cavity. A supporting pin having an extended front tip at one end which is led through a through hole disposed at the front of the cavity and is connected to a pivotally operated arc arm pivotally fixed to a lug on the outer wall of the runner at the other end. The extended front tip of the supporting pin is selectively engaged with the teeth of the rack-like member and can disengaged therewith by actuation of the arc arm so as to make the supporting pin retrievably actuated due to the bias spring, causing the sunshade opened and closed readily.
REFERENCES:
patent: 2183833 (1939-12-01), Farhar
patent: 3145720 (1964-08-01), Torii
patent: 4011881 (1977-03-01), Becher
patent: 4132236 (1979-01-01), Petersen et al.
patent: 4424824 (1984-01-01), Becher
Friedman Carl D.
Mai Lan M.
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