Patent · US Expired

Spindle gear for an adjusting device in a motor vehicle seat

US7340974B2 · kind B2 · utility

25Cited by

22References

4Claims

0Family size

Assignee

C. Rob. Hammerstein GmbH & Co. KG · DE

Inventors

Robert Landskron · Monheim, DE
Michael Lingner · Düsseldorf, DE
Arif Karadag · Leichlingen, DE
Wilfried Beneker · Leichlingen, DE

Key dates

Filing date	Dec 27, 2005
Grant date	Mar 11, 2008
Priority date	—
Expiry date	Dec 27, 2025

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/19828
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A spindle gear for a motor vehicle seat adjusting device having a housing, a spindle nut, a spindle and a worm wheel. The spindle nut may have an external bearing surface and a bearing shell may include an internal bearing surface cooperating with the external bearing surface. The spindle nut may have a slide lacquer coat. The spindle nut may have an external bearing surface and a stop disk may be attached to the external bearing surface so as to surround it. A projection may engage a corresponding spindle nut recess. The housing may comprise at least two housing parts made of zinc diecasting. The external teeth of the spindle nut may form a globoidal gear. The external spindle nut teeth may have an outer diameter that is smallest in an axial center thereof and increases toward the axial end regions.

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