Tent – canopy – umbrella – or cane – Umbrella – Self-opening and closing
Patent
1976-11-05
1978-07-04
Schroeder, Werner H.
Tent, canopy, umbrella, or cane
Umbrella
Self-opening and closing
52 5, 135 8, 135 15CF, E04F 1010
Patent
active
040982823
ABSTRACT:
A construction element, such as a slat holding clamp is described having tabs and lungs for engaging the slat. The clamp engages the slat on four sides, and includes a tab through which a cable can be run. Certain tabs may optionally include lugs engaging the slat interiorly. The clamp connects the construction element to means for arranging a series of the construction elements in a row to provide a variable shade curtain for an outdoor work area, or to provide slidable curtains.
REFERENCES:
patent: 852606 (1907-05-01), Hitch
patent: 1095484 (1914-05-01), Wright
patent: 1278559 (1918-09-01), Arnold
patent: 1331462 (1920-02-01), Sandberg
patent: 3381424 (1968-05-01), Butler
Berman Conrad L.
Kleinberg Marvin H.
Schroeder Werner H.
Turner, Jr. Thomas A.
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