Longitudinal Bending Patents (Class 156/200)
Prior to or during assembly with additional lamina (Class 156/201)
Overedge bending or overedge folding (Class 156/202)
And edge-joining of one piece blank to form tube (Class 156/203)
  • Composite panel and shape forming apparatus
    Patent number: 3956055
    Abstract: Apparatus for continuously forming flat sheets or shapes from a composite of resin, reinforcing fibers and a particularized filler including a series of successive material deposition and treating stations through which the composite is pulled while sandwiched between upper and lower flexible and essentially continuous carrier sheets. The apparatus particularly suited for such composites where a high percentage of filler is used and is applicable to the formation of diverse flat sheet or shaped cross-sectional configurations.
    Type: Grant
    Filed: September 17, 1973
    Date of Patent: May 11, 1976
    Assignee: Material Systems Corporation
    Inventors: Buddy L. Duft, Steven I. Feher, Liberate Patag
  • Method of forming articles of fibrous materials
    Patent number: 3939022
    Abstract: A method for the continuous formation of articles, e.g. one piece pipe insulator sections, from a strip-shaped felt of fibrous material, e.g. glass fibre, containing a hardenable bonding material employs stationary forming surfaces between which the strip is pulled, from beyond the forming surfaces, to deform the strip, which is then cured. The forming surfaces are readily and inexpensively replaceable for forming articles of various shapes and/or sizes.
    Type: Grant
    Filed: May 22, 1974
    Date of Patent: February 17, 1976
    Assignee: Fiberglas Canada Limited
    Inventor: John W. Lacon