Self-straining bolts

Details Self-straining bolts Self-straining bolts

1977-02-23

1978-10-17

Britts, Ramon S.

Implements or apparatus for applying pushing or pulling force

Device or member for contacting and guiding moving cable

Including rotatable, cable contacting, pulley wheel element

29252, 29446, 254 29A, F16B 3104, B23P 1102

Patent

active

041202309

ABSTRACT:
A self-straining bolt comprises a hollow shank having a flanged and screw-threaded head at one end, a core member, a rod within the shank and secured to the other end of the shank a nut in screw-threaded engagement with the core bears against the shank at the said one end. The bolt is tensioned by means of a tensioning head comprising two coaxial jacking means, one for tensioning the hollow shank by bearing on the core member and the other for tensioning the core member by bearing on the shank head.

REFERENCES:
patent: 2359046 (1944-09-01), Miller
patent: 3679173 (1972-07-01), Sherrick et al.
patent: 3772759 (1973-11-01), Bunyan
patent: 3835523 (1974-09-01), Stansfield
patent: 3841193 (1974-10-01), Ito
patent: 3886707 (1975-06-01), Heldt
patent: 3947948 (1976-04-01), Fredriksson et al.

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