Patent · US Expired

Latch needle for loop forming textile machines

US4817398A · kind A · utility

4Cited by

3References

8Claims

0Family size

Assignee

Theodor Groz & Sohne & Ernst Beckert Nadelfabrik Commandit-Gesellschaft · DE

Inventors

Sigmund Sos · Albstadt, DE
Ferdinand Schuller · Königsbrunn, DE

Key dates

Filing date	May 6, 1988
Grant date	Apr 4, 1989
Priority date	—
Expiry date	May 6, 2008

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD04B35/04
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A latch needle for loop forming textile machines includes a steel needle shank and a nonmetallic latch. The steel needle shank has upper and lower edges, a sawslot defined in the needle shank and a needle hook at one end of the needle shank. The needle also includes an axle which extends transversely across the sawslot and contacts the needle shank. The latch is pivotally mounted on the axle and is provided with a noucat at one end. The latch is pivotal between an open and a closed position. When the latch is in the closed position, the noucat rests on the needle hook and when the latch is in the open position, the back surface of the latch contacts part of the needle shank. The nonmetallic material which the latch is composed of is a fiber reinforced thermoplastic homopolymer or copolymer plastic.

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