Patent · US Expired

Tap changer

US7622688B2 · kind B2 · utility

1Cited by

12References

2Claims

0Family size

Assignee

MASCHINENFABRIK REINHAUSEN GMBH · DE

Inventors

Reinhold Baertl · Lappersdorf, DE
Albert Schmidbauer · Roding, DE

Key dates

Filing date	Nov 17, 2005
Grant date	Nov 24, 2009
Priority date	—
Expiry date	Feb 28, 2026

Classification

Technology area (CPC H)Electricity
CPC primaryH01H3/44
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A tap changer has an insulating housing and a plurality of annular arrays of contacts fixed in the housing. A vertical switching shaft in the housing carries contacts positioned to engage the fixed contacts of the respective array on rotation of the shaft. A tap-changer head closes an upper end of the housing, and a head flange above the tap-changer head is formed with threaded fastening bores. A geneva transmission on the tap-changer head has an output connected to the shaft and an input shaft projecting vertically upward from the head into the head flange. An upper transmission stage boltable to the bores on the head flange is connectable to the input shaft. A handwheel drive has a flange with an upper cover through which the input shaft extends and a handwheel or hex fitting on an upper end of the input shaft.

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