Patents by Inventor Matti Wallgren

Matti Wallgren has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4641824
    Abstract: Endless conveyors (2,3) on opposite sides of a table (1) convey cloth (14) along table (1). Each longitudinal edge of cloth (14) is engaged by a plurality of devices carried by the corresponding conveyor (2,3). These devices may be catches (9) or, preferably, pins (30). Rollers (37) with brushes (38) on their outer surfaces are positioned to press cloth (14) onto pins (30). Rollers (37) are on the infeed side of a cutter (17) to ensure continued automatic feeding of cloth (14) following cutting of cloth (14). Release bars (32) are lowered to push cloth (14) off pins (30) to allow a severed length of cloth to drop onto table (1).
    Type: Grant
    Filed: November 25, 1985
    Date of Patent: February 10, 1987
    Inventors: Matti Wallgren, Pertti Tynkkynen