Process for covering a substrate with threads welded through the use of ultrasounds, a machine for the application of this process and a substrate covered with threads welded according to this process

Patent 4582740 Issued on April 15, 1986. Estimated Expiration Date:

November 26, 2004. 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.

Abstract Claims Description Full Text

Patent References

2752277

2884680

3640786

3850783

Method and apparatus for making pile fabric Patent #: 3982978
Issued on: 09/28/1976
Inventor: Carpenter

Inventors

Application

No. 06/674732 filed on 11/26/1984

US Classes:

428/88, Edge feature or configured or discontinuous surface156/178, Plural filaments156/72, Setting or embedding tufts or discrete pile elements onto backing (e.g., rugs, brushes, etc.)156/73.2, Rod, strand, or filament428/94Continuous strand with adhesive bond to backing

Examiners

Primary: Wityshyn, Michael G.

Attorney, Agent or Firm

International Classes

D04H 11/00 (20060101)
D04H 11/04 (20060101)

Foreign Application Priority Data

1981-12-03 CH

Abstract

A machine for producing pile fabric comprises a sonotrode (1) , a matrix (4) of tubes (5) bringing threads (10) onto a support sheet (7) for the purpose of welding rows of loops to the surface of this sheet. The matrix (4) is guided between slides (6) which are parallel to the longitudinal axes of the tubes (5) and perpendicularly to the surface of application of the sonotrode (1) vibrations. A driving mechanism (13, 14, 15) periodically brings the extremities of the tubes (5) from which the threads leave against the sonotrode (1) by pressing the base of a row of loops and the support sheet (7) against the sonotrode in order to cause them to be welded together.