Pumps – Motor driven – Fluid motor
Patent
1987-11-17
1989-03-14
Smith, Leonard E.
Pumps
Motor driven
Fluid motor
91313, F04B 912
Patent
active
048121096
ABSTRACT:
A piston slidably inserted into a cylinder is reciprocated by fluid pressure such as pneumatic pressure and hydraulic oil and a spring is used to ascend the piston. A spool-shaped pilot valve element is provided to allow a supply-discharge valve disc to take supply and discharge positions, thus fluid pressure being supplied to and discharged from the cylinder. When the supply-discharge disc is actuated to take the supply position from the discharge position, the actuated force (supply position and discharge position) becomes stronger while the supply-discharge valve disc is in operation. When the supply-discharge valve disc is actuated to take the discharge position from the supply position, the back pressure resistance applied to the supply-discharge valve disc become weaker while the supply-discharge valve disc is in operation.
REFERENCES:
patent: 485787 (1892-11-01), Craig
patent: 2361757 (1944-10-01), Fink
patent: 2745387 (1956-05-01), Dinkelkamp
patent: 3019773 (1962-02-01), Meeker
patent: 3071118 (1963-01-01), Wilden
patent: 3101030 (1963-08-01), Hyatt et al.
patent: 3272081 (1966-09-01), Vedder et al.
patent: 3489100 (1970-01-01), Hill
patent: 3609061 (1971-09-01), Peoples
patent: 3963383 (1976-06-01), Hill
patent: 4042311 (1977-08-01), Yonezawa
patent: 4645431 (1987-02-01), Spencer et al.
Kabushiki Kaisha KOSMEK
Smith Leonard E.
LandOfFree
Apparatus for driving piston by fluid pressure 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 driving piston by fluid pressure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for driving piston by fluid pressure will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-891289