Boots – shoes – and leggings
Patent
1976-09-16
1978-08-29
Morrison, Malcolm A.
Boots, shoes, and leggings
73 99, 173 12, 364508, 364853, G06F 1520, B23P 1906
Patent
active
041108299
ABSTRACT:
A meter for determining stiffness or torque gradient including, in one embodiment, a deflectable coupling connected between an output shaft and a power input shaft, sensing means for developing two separate series of signals representative of the displacement of the input and output shafts respectively, a comparator for determining from the two series of signals a function of the stiffness or torque gradient and, in another embodiment, including a single shaft having an input end and an output end, transducer means associated with the shaft for developing a signal representative of the torque being applied through the shaft, sensing means for developing a signal representative of the displacement of the shaft, and comparator means for determining from the two signals a function of the stiffness or torque gradient. Either embodiment of the stiffness meter may be used for tightening a fastener by including an additional circuit responsive to the comparator output for sequentially storing information representative of the maximum stiffness developed up to any given point during the tightening operation and for producing a stop signal when the instantaneous stiffness has dropped to a predetermined ratio of the maximum stiffness.
REFERENCES:
patent: 3643501 (1972-02-01), Pauley
patent: 3693726 (1972-09-01), Hornig et al.
patent: 3794974 (1974-02-01), Henn et al.
patent: 3794981 (1974-02-01), O'Connor
Krass Errol A.
Morrison Malcolm A.
Nerenberg Aaron
Standard Pressed Steel Co.
LandOfFree
Apparatus for and method of determining rotational and linear st does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for and method of determining rotational and linear st, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for and method of determining rotational and linear st will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1637548