Power plants – Pressure fluid source and motor – Pulsator
Patent
1989-12-22
1991-10-22
Ostrager, Allen M.
Power plants
Pressure fluid source and motor
Pulsator
60591, 60593, F15B 700
Patent
active
050583859
ABSTRACT:
The present invention provides a pneumatically powered actuator having hydraulic control for both locking and controlling the velocity of an output rod without any sponginess. The invention includes a double-acting pneumatic actuator having a bore, a piston slidably engaged within the bore, and a control rod connected to the piston. The double-acting pneumatic actuator is mounted to a frame. A first double-acting hydraulic actuator having a bore, a piston slidably engaged within the bore,and a follower rod mounted to the piston is mounted to the frame such that the follower rod is fixedly connected to the control rod. The maximum translation of the piston within the bore of the first double-acting hydraulic actuator provides a volumetric displacement V.sub.1. The present invention also includes a second double-acting hydraulic actuator having a bore, a piston slidably engaged within the bore, and an output rod mounted to the piston. The maximum translation of the piston within the bore of the second double-acting hydraulic actuator provides a volumetric displacement V.sub.2, where V.sub.2 =V.sub.1. A pair of fluid ports in each of the first and second double-acting hydraulic cylinders are operably connected by fluid conduits, one of which includes a valve circuit which may be used to control the velocity of the output rod or to lock the output rod in a static position by regulating the flow of hydraulic fluid between the double-acting cylinders.
REFERENCES:
patent: 2607321 (1952-08-01), Lado
patent: 3028727 (1962-04-01), Anston
patent: 3946642 (1976-03-01), Bogenschutz
patent: 4167891 (1979-09-01), Kamimura
patent: 4463657 (1984-08-01), Tootle et al.
patent: 4466334 (1984-08-01), Holtrop
patent: 4633758 (1987-01-01), Kedzierski
Thesis: Modeling and Control of a Novel Robotic Actuator, by J. D. Ingram, r.; Defense Technical Information Center Accession, No. ADA205102; Dec. 1988.
Progress Report: Conceptual Design & Analysis of a Novel Actuator, by H. R. Everette et al., NPS-69-88-011; Defense Technical Information Center Accession, No. ADA2011010; Oct. 1988.
Fendelman Harvey
Kagan Michael A.
Keough Thomas Glenn
Ostrager Allen M.
The United States of America as represented by the Secretary of
LandOfFree
Pneumatic actuator with hydraulic control does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pneumatic actuator with hydraulic control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pneumatic actuator with hydraulic control will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-100976