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. 14, 1999
Filed:
Nov. 11, 1997
Steven C Barber, Shorewood, MN (US);
Other;
Abstract
A linear pneumatic actuator stopping and positioning apparatus has a pneumatic actuator connected to a worktable for moving the worktable along a rectilinear path as well as a selector shaft that is mounted for rotational indexing movement at one side of the actuator and is operatively associated with one or more extendible stop arms for selecting a stop arm located at a selected stop point so as to contact the worktable and stop the movement of the worktable at the stop point selected. The shaft can be mounted to allow it to be shifted along its own central axis for moving one or more sleeve members that are connected to the shaft a short distance for extending a stop arm to an operating position. In one form, a stop arm actuator and locking bar is positioned to be engaged by the sleeve and to press the stop arm to its extended position. In another form of the invention, a stop plate is mounted on the selector shaft for rotation with the shaft as the shaft is indexed one or more times through a predetermined arc for extending a lobe on the plate to an operating position in the path of the worktable to halt the worktable at a selected stop point. In a third form, the stop member is screw-threaded into a hub that is mounted on the selector shaft and can be threaded into or out of the hub for establishing a selected stop point.