Patent · US Expired

Sliver opening device for separating out impurities and feeding fiber to an open end spring machine

US5398494A · kind A · utility

7Cited by

12References

4Claims

0Family size

Assignee

W. Schlafhorst AG & Co. · DE

Inventors

Heinz-Georg Wassenhoven · Wittlich, DE
Elke Hodenius · Rheydt, DE
Ute Kraehe · Rheydt, DE
Udo Papenfuss · Rheydt, DE

Key dates

Filing date	Oct 14, 1993
Grant date	Mar 21, 1995
Priority date	—
Expiry date	Oct 14, 2013

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD01H4/32
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A sliver opening and fiber feeding device for opening a sliver into individual fibers and feeding the individual fibers to the rotor of an open end spinning machine is provided with a polytetrafluoroethylene coating for the interior surface of the housing of the sliver feeding and opening device, in particular, the trash discharge passage. The polytetrafluoroethylene coating advantageously has a relatively low co-efficient of friction to thereby reduce the affinity of sticky material, which may be present in the sliver due to the presence of insect residue or the like, to stick to the interior surfaces of the device. The polytetrafluoroethylene coating is included on an insert element mounted in the discharge passage, with the insert element being capable of being retrofitted in an existing sliver opening and fiber feeding device.

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