Reinforcing elements

Details Reinforcing elements Reinforcing elements

1968-08-26

1976-02-03

Curtis, A. B.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

52736, B21b 1502

Patent

active

039362787

ABSTRACT:
Article incorporating at least one tensile reinforcing element such as a metal ribbon twisted in helical fashion but having at least one edge thereof intermittently deformed out of its helical configuration.

REFERENCES:
patent: 402333 (1889-04-01), Knueppel
patent: 441849 (1890-12-01), Locke et al.
patent: 766280 (1904-08-01), O'Shea
patent: 858693 (1907-07-01), White
patent: 949570 (1910-02-01), Harris
patent: 2352982 (1944-07-01), Tomalis
Abrams, Tests of Bond Between concrete and Steel," Univ. of Ill., Eng. Expt. Station Bulletins, 1913, pp. 61, 72, 73, and explanatory letter (1943) attached.

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