Boots – shoes – and leggings
Patent
1985-07-01
1987-09-08
Ruggiero, Joseph
Boots, shoes, and leggings
72 21, 72 31, 100 53, 100 99, 364476, G06F 1546, G05B 902, B30B 1528
Patent
active
046928570
ABSTRACT:
The present invention discloses method and apparatus of protecting a press from being damaged not only under the pressure overload condition, but also under the torsion, power, and energy overload conditions by detecting means for detecting the angular displacement of the crank shaft or the fly wheel of the press, and by means of a digital information processor or a microcomputer for calculating the angular velocity, angular acceleration, pressure, torsion, power, and energy load values, and for monitoring the four overload conditions. When at least one of the overload conditions occurs, the digital information processor will immediately send out an overload signal to effect the proper protecting process, including braking the press and releasing the hydraulic buffer means of the press to reduce the impulse of the press.
REFERENCES:
patent: 3987283 (1976-10-01), Moeller
patent: 4116050 (1978-09-01), Tanahashi et al.
patent: 4148203 (1979-04-01), Farazandeh et al.
patent: 4274282 (1981-06-01), Budraitis et al.
patent: 4429627 (1984-02-01), Edso
patent: 4453421 (1984-06-01), Umano
patent: 4461182 (1984-07-01), Jones, Jr. et al.
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