Stud/bolt load gauge

Details Stud/bolt load gauge Stud/bolt load gauge

1986-06-02

1987-01-13

Holko, Thomas J.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

With means to indicate application of predetermined...

Including gauge means

73761, F16B 3102

Patent

active

046361200

ABSTRACT:
A stud/bolt load gauge assembly. A gauge screw threadably engaged in a stud or bolt has a top, belleville, overload, and bottom washer mounted between the head of the bolt and the head of the gauge screw. All of the washers are movable until axial stress on the bolt equal to the minimum desired load causes the underload gap to be taken up by the gauge screw. Then only the overload washer is movable. The overload washer becomes immovable between the top and bottom washers when the bolt load is increased beyond the desired maximum load, causing compression of the belleville spring washer to a substantially flat state.

REFERENCES:
patent: 2464152 (1949-03-01), Ralston
patent: 3174386 (1965-03-01), Lewis
patent: 3476009 (1969-11-01), Markey
patent: 3776031 (1973-12-01), Trigg
patent: 3823639 (1974-07-01), Liber
patent: 3908508 (1975-09-01), Payne
patent: 4159483 (1979-06-01), Bettim
patent: 4170163 (1979-10-01), Payne
patent: 4205572 (1980-06-01), Weiner
patent: 4525114 (1985-06-01), Hirst
patent: 4553124 (1985-11-01), Malicki
patent: 4571133 (1986-02-01), Lindow
NASA Tech Briefs 1982, p. 192.

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