Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – And means to apply stress to preform and uniting in stressed...
Patent
1972-07-03
1976-02-10
Shore, Ronald J.
Plastic article or earthenware shaping or treating: apparatus
Distinct means to feed, support or manipulate preform stock...
And means to apply stress to preform and uniting in stressed...
52223L, 249210, 403369, B28B 2304
Patent
active
039376079
ABSTRACT:
Post-tensioning apparatus for cast concrete comprises dead end and live end anchors adjacent to the casting forms for gripping and post-tensioning reinforcing tendons. A group of dead end anchors are preassembled with a flexible plastic strip, and likewise a group of live end anchors are preassembled with a flexible plastic strip. The strips permit preset spacing of the anchors so that each assembly of anchors can be secured to the associated form with accurate spacing provided for respective dead and live anchors in the setup.
REFERENCES:
patent: 1162554 (1915-11-01), Berry
patent: 2234663 (1941-03-01), Anderegg
patent: 3399434 (1968-09-01), Kelly
McQuade John
Reliable Electric Company
Shore Ronald J.
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