Patents by Inventor Helmut Dontscheff

Helmut Dontscheff 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).

  • Cutting method and apparatus for tape laying machines
    Patent number: 4519285
    Abstract: A tape (100) is transported by a continuous strip of backing paper (102) along a tape guide (22) into position for the tape (100) to be cut by a blade (12). The tape guide (22) has an essentially flat center portion (24) and opposite side portions (28) that are inclined toward blade (12) relative to center portion (24). Side portions (28) are preferably smoothly curved. Side portions (28) guide the lateral edges of the tape (100) and paper (102) to bend toward blade (12) when a lateral cut is being made. This allows a cut of essentially constant depth to completely sever tape (100), including any fibers (106) that have come loose from the edges of paper (102), without severing paper (102).
    Type: Grant
    Filed: June 30, 1983
    Date of Patent: May 28, 1985
    Assignee: The Boeing Company
    Inventor: Helmut Dontscheff
  • Controlled depth cutting method and apparatus
    Patent number: 4517872
    Abstract: Tape (100) being laid by a tape laying machine (2) is transported by a continuous strip of backing paper (102). A rotary cutter (12) is mounted on one arm (36) of a C-shaped frame (34). An anvil (20) is mounted on the other arm (38). Frame (34) moves laterally to move cutter (12) and anvil (20) laterally across tape (100) with tape (100) and paper (102) therebetween. A single point on anvil (20) supports the portion of tape (100) being cut throughout the length of the cut. Therefore, an essentially constant distance between cutter (12) and anvil (20) is maintained to completely sever tape (100) without severing paper (102).
    Type: Grant
    Filed: June 30, 1983
    Date of Patent: May 21, 1985
    Assignee: The Boeing Company
    Inventor: Helmut Dontscheff
  • Pivotal mount for laminating head
    Patent number: 4461669
    Abstract: A tape laying head (4) has a presser roller (20) spaced below a support post (32), which is a part of the carriage of a contour tape laying machine (2). The longitudinal axis of post (32) is aligned with a point on tape path (22). Parallel linkage (36) mounts head (4) and roller (20) on post (32) and allows them to pivot relative to post (32) about path (22). Linkage (36) includes two opposite side posts (38, 44) parallel to post (32), and two levers (40, 42) connecting posts (38, 44) to post (32). Side posts (38, 44) are pivotably connected to head (4). Springs (62) may be provided to balance head (4) in any pivotal position. A motor (64) may also be provided to pivot lever (40) to in turn pivot head (4).
    Type: Grant
    Filed: September 30, 1983
    Date of Patent: July 24, 1984
    Assignee: The Boeing Company
    Inventor: Helmut Dontscheff