Patent · US Expired

Sewing machine with a balance wheel

US6138593A · kind A · utility

0Cited by

5References

14Claims

0Family size

Assignee

G.M. Pfaff Aktiengesellschaft · DE

Inventors

Jurgen Schwarz · Bremerhaven, DE
Gerhard Ruf · Eichstätt, DE

Key dates

Filing date	Dec 30, 1999
Grant date	Oct 31, 2000
Priority date	—
Expiry date	Dec 30, 2019

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S474/903
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A sewing machine with a balance wheel (1), which is detachably fastened on the arm shaft (15). The balance wheel (1) is secured against rotation by the cooperation of a carrier pin (17) transversely protruding from the arm shaft (15) with two axially extending recesses (7) in the balance wheel hub (1), which said recesses are open at one end. The wheel is secured axially by the cooperation of an elastic finger (9), which is fastened to the balance wheel (1) and has a mounting hole (12), with the carrier pin (17).

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