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:
Sep. 02, 1997
Filed:
Feb. 20, 1996
John E Farmer, St. Petersburg, FL (US);
Carl A Rotenberger, St. Petersburg, FL (US);
Farmer Mold & Machine Works, Inc., St. Petersburg, FL (US);
Abstract
An improved control system for a movement actuator is disclosed for moving a member between a retracted position and an extended position. The movement actuator comprises a cylinder having a piston with a fluid supply providing pressure to a first and a second side of the piston. A control applies a first and a second fluid pressure on the first and second sides of the piston for moving the member from the retracted position toward the extended position with a force related to a difference between the first fluid pressure and second fluid pressure for reducing the possibility of damage to an unintended object in the path of the member. The control applies the first fluid pressure on the first side of the piston upon the member being in proximity to the extended position for moving the member into the extended position with a force related to the first fluid pressure for insuring proper positioning of the member.