Metal deforming – With means to drive tool – With means to selectably control movement of tool
Patent
1978-09-12
1980-01-01
Husar, Francis S.
Metal deforming
With means to drive tool
With means to selectably control movement of tool
7245303, 72454, B21J 916
Patent
active
041810031
ABSTRACT:
A drive of a hydraulic screw press comprises a power cylinder incorporating a movable member connected with the press slide. A limit switch actuated by the downward travel of the slide opens a shutoff valve which permits fluid to flow through an adjustable flow-restrictor to actuate the piston of a pneudraulic cylinder within a preset time period determined by the adjustment of the flow restrictor. At the end of the preset time period, the rod of the piston will have traveled a distance sufficient to actuate a limit switch to control a valve arrangement for discharging the pressure in communication with the power cylinder. The slide is returned to the initial upper position by a cylinder under a constant pressure.
REFERENCES:
patent: 1913663 (1933-06-01), Ferris
patent: 3512476 (1970-05-01), Georg
patent: 3654799 (1972-04-01), Dischler
patent: 3687070 (1972-08-01), Dischler
Kononov Ivan V.
Makushin Mikhail P.
Polukhin Dmitry I.
Popov Vyacheslav E.
Salov Viktor P.
Crosby Gene P.
Husar Francis S.
LandOfFree
Hydraulic screw press drive does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydraulic screw press drive, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic screw press drive will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2114931