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:
Aug. 23, 1983
Filed:
Apr. 28, 1981
Terence A O'Connor, Elyria, OH (US);
Teledyne Republic Manufacturing, Cleveland, OH (US);
Abstract
A dual drive pump is disclosed in which the differential area, double-acting piston and cylinder pump can be operated from a rotary power source or manually operated by pivotal movement of a lever. The manual operation lever is pivoted to the cylinder housing. A Scotch yoke cam drive is provided with a rotary shaft journaled on the manual lever. A Scotch yoke housing is connected to the piston and encloses a cam on the rotary shaft. A lock pin is installable in two different locations. When manual operation is required, the lock pins locks the shaft against rotation with respect to the lever. For power operation, the lock pins locks the lever in a fixed position so that the shaft is in turn held in a fixed location.