Self-adjusting canvas tensioning frame

Details Self-adjusting canvas tensioning frame Self-adjusting canvas tensioning frame

1984-01-16

1987-01-13

Foss, J. Franklin

Flexible or portable closure, partition, or panel

Framed type

Adjustable frame size

D06C 328, E06B 326

Patent

active

046357009

ABSTRACT:
A tensioning frame for stretching and keeping stretched upon it a canvas sheet in a plane configuration and with uniform tension, some or all of the outer edge of the canvas sheet being capable of sliding motion over the outer edge of the rigid structure covered by it and attached to it by means of springs. The force of each spring may be adjusted in situ to the tension desired in the canvas sheet. The tension and plane configuration of the canvas sheet is thus maintained in spite of the effects of temperature, humidity, or weight. Sliding of the contacting surfaces is facilitated by layers of a low-friction substance.

REFERENCES:
patent: 142232 (1873-11-01), Holly
patent: 1857425 (1932-05-01), Brewer
patent: 2197489 (1940-04-01), Trulock
patent: 2456225 (1948-12-01), Thomas
patent: 3133375 (1964-05-01), Myren
patent: 3529653 (1970-09-01), Fey, Jr.
patent: 3914887 (1975-10-01), Newman
patent: 4006771 (1977-02-01), Spurkel
patent: 4114945 (1978-09-01), Lutz
patent: 4263361 (1981-04-01), Hodes et al.
patent: 4301853 (1981-11-01), Vidal

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