Patent · US Expired

Reduction gear

US4328711A · kind A · utility

0Cited by

10References

11Claims

0Family size

Assignee

Ernst Leitz Wetzlar, GmbH · DE

Inventors

Herbert Machmerth · Solms, DE
Georg Mann · Staufenberg, DE
Gerhard Salzmann · Franklin Lakes, US

Key dates

Filing date	Dec 4, 1979
Grant date	May 11, 1982
Priority date	—
Expiry date	Dec 4, 1999

Classification

Technology area (CPC G)Physics
CPC primaryG03B17/425
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Disclosed is a reduction gear assembly for automatically accommodating varying load conditions on a driven member, comprising a rotatably mounted, axially displaceable first shaft; a drive engagement driving the first shaft by a frictional force engaging in the axial direction of the shaft; a driving element mounted for rotation with the first shaft; and a driven member rotatably driven by the driving element and being subjected to varying load conditions, wherein the driving element comprises means for controlling the axial movement of the first shaft in response to the varying load conditions on the driven member. Also disclosed is a camera embodying the reducing gear assembly as part of an automatic film advance system.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.