Measuring and testing – Specimen stress or strain – or testing by stress or strain...
Patent
1987-05-15
1988-07-19
Myracle, Jerry W.
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
7386256, 340675, G01B 2100
Patent
active
047577193
ABSTRACT:
A round load lifting sling composed of an endless skein of threads as a load bearing core and a textile protective tube surrounding the endless skein, the endless skein carrying along a testing conductor which is connected with two connecting contacts which penetrate the wall of the protective tube for connection to a source of testing medium to flow through the testing conductor. Damage or severance of the threads of the skein is detectable by an interruption in flow of the medium due to accompanying damage or severance of the conductor.
REFERENCES:
patent: 3080748 (1963-03-01), Burkley
patent: 3958455 (1976-05-01), Russell
patent: 4421352 (1983-12-01), Rave et al.
Myracle Jerry W.
Spanset Inter AG
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