The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 29, 2011
Filed:
Feb. 15, 2006
Jack Hetherington, Haslett, MI (US);
Michael Hetherington, Williamston, MI (US);
Jack Hetherington, Haslett, MI (US);
Michael Hetherington, Williamston, MI (US);
P.I. Engineering, Inc., Williamston, MI (US);
Abstract
A motion platform/simulator uses pumps coupled to servo-controlled electric motors to pump fluid directly into and out of rubber bellows-type actuators. Peristaltic or gear pumps may be used in conjunction with linear transducers/encoders. The fluid can be a gas such as air or one of many non-toxic fluids, even water, as the pump or actuators require no lubrication from the working fluid. In the preferred embodiment, a mechanical pivot such as a U-joint is situated between the platform and the ground surface, and each transducer is located immediately adjacent an actuator. A reservoir or reservoirs may be provided to supply and receive fluid to and from the actuator(s) through the pump(s) or, alternatively, the pump(s) may be coupled between two actuators, thereby eliminating the need for a fluid reservoir. A pump may be coupled between two stacked actuators or different actuators located at different points on the platform.