Jack for tensioning cables in prestressed concrete structures

Details Jack for tensioning cables in prestressed concrete structures Jack for tensioning cables in prestressed concrete structures

1981-05-29

1983-09-20

Smith, James G.

Implements or apparatus for applying pushing or pulling force

Pipe or rod jack

Tie rod tensioner

29452, E21B 1900

Patent

active

044051140

ABSTRACT:
A jack for tensioning cables in prestressed concrete structures, is made to react on the distribution plate with one member of a cylinder-piston system, the other member engaging the strands or wires of the cable to tension them by the lengthening of such cylinder-piston system. The strands pass through the variable-volume chamber of the cylinder-piston system inside guide pipes sliding in one of the members and engaging the other.

REFERENCES:
patent: 3090598 (1963-05-01), Paul
patent: 3399865 (1968-09-01), Kelly
patent: 3412511 (1968-11-01), Dietrich
patent: 3554492 (1967-12-01), Beghi
patent: 3692277 (1972-09-01), Schwartz et al.
patent: 4048706 (1977-09-01), Ludvigson
patent: 4106752 (1978-08-01), Roqueta
patent: 4279068 (1981-07-01), Altmayer

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