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:
Feb. 06, 2007
Filed:
Jan. 31, 2005
Steve Johnson, Portland, OR (US);
Steve Johnson, Portland, OR (US);
Other;
Abstract
A positive displacement rotary device and method of use are provided. The rotary device includes coupled chamber halves with a drive disc having at least one drive plate rotatably engaged with the drive disc. The drive disc is mounted on a drive shaft and positioned between the coupled chamber halves. The drive plates include at least two drive lobes with the drive plates rotating about an axis of rotation 90° and tangent to the drive shaft axis of rotation while the drive disc sweeps the drive plates around the drive shaft. The chamber halves include camming chambers that are shaped to follow the path of the drive lobes on the drive plates as they are swept around the drive shaft. The rotary device can be used as a motor, a pump, or even an internal combustion engine.