U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Circular warp knitting machine

Patent 4977759 Issued on December 18, 1990. Estimated Expiration Date: Icon_subject June 1, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

1237106

3570268

Machine for knitting cord-like structures
Patent #: 3939671
Issued on: 02/24/1976
Inventor: Lawson ,   et al.

Fabric and apparatus and method for making same Patent #: 4192160
Issued on: 03/11/1980
Inventor: Duhl ,   et al.

Inventor

Assignee

Application

No. 360102 filed on 06/01/1989

US Classes:

66/81, Warp66/125RFEEDING

Examiners

Primary: Reynolds, Wm. Carter

Attorney, Agent or Firm

Foreign Patent References

  • 2926773 DE 01/13/1980
  • 500189 IT 11/13/2012
  • 23650 GB 02/13/2012
  • 403142 CH 06/13/1966

International Class

D04B 025/02

Abstract

Improved drive means is provided for imparting clockwise and counterclockwise reciprocal movements to the yarn guides of a circular warp knitting machine including a plurality of vertically reciprocated needles. The improved drive means includes an endless timing belt drivingly connected to the yarn guides and a crank arm drivingly connected at one end to the endless timing belt. A rotary drive wheel is connected to the opposite end of the crank arm for imparting continuous longitudinal reciprocation to the crank arm and to thereby impart reciprocating movement to the endless timing belt and the yarn guide drivingly connected thereto. The yarn guide may include a first yarn guide for directing a base or ground yarn to the needles and a second yarn guide for directing an inlay yarn to the needles. Endless timing belts are utilized in driving each of the base yarn guide and the inlay yarn guide and the timing belt drive permits the circular warp knitting machine to be operated at an increased operating speed.

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