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. 11, 1981
Filed:
Jan. 02, 1979
Henry Ryffel, Nashua, NH (US);
Thomas J Black, Jr, Lowell, MA (US);
Compudrive Corporation, North Billerica, MA (US);
Abstract
A improved planetary drive employs a pair of radially inner and outer nonorbiting members between which is radially disposed an annular orbiting member. The inner nonorbiting member and the inner surface of the inner wall of the orbiting member are formed with opposing surface in meshing engagement to form one stage of a planetary drive, while the opposing surfaces of the outer nonorbiting member and the orbiting member are formed with teeth in meshing engagement to form a second stage of a planetary drive. All of the orbiting and nonorbiting members and their teeth lie in the same plane or planes disposed radially outward from the means for orbiting the orbiting member so that when that member is orbited, the forces exerted on the orbiting means are in said plane or planes. Various combinations of rollers and lobed surfaces to formed the gear stages are also described.