Patent · US Expired

Gearbox

US5079965A · kind A · utility

16Cited by

10References

11Claims

0Family size

Assignee

Zahnradfabrik Friedrichshafen AG · DE

Inventors

Fritz Leber · Friedrichshafen, DE
Michael Herlitzek · Eriskirch, DE

Key dates

Filing date	Jun 11, 1990
Grant date	Jan 14, 1992
Priority date	—
Expiry date	Jun 11, 2010

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/19233
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

The invention concerns a gearbox (9). On the gearbox is front-mounted a hydrodynamic torque converter (3). The gearbox (9) has hydraulically actuatable gear clutches (17, 18, 23 and 28) which are designed structurally alike. The gears (14, 15, 16, 19, 20, 21, 22, 24, 26 and 27) are in constant engagement with each other. In order to reduce the development of noise, the gears are high and helically toothed. The gearbox is especially suited for use in vehicles in which special importance is attached to comfortable riding. Such vehicles are, for instance, passenger cars and mobile homes.

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