Patents by Inventor Peter M. McAlpine

Peter M. McAlpine 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: 5347945
    Abstract: A system for controlling the spinnaker pole (10) on a sailing craft (1). The system utilizes spinnaker pole brace lines (15, 14) which extend from port and starboard side lower corners (16, 17) of the spinnaker sail (18). Both of the brace lines (15, 14) are feedably received in respective apertures in the body of the pole end (30), and remain therein regardless of whether the pole (10) is controlling the starboard or port edges of the spinnaker sail (18). The system uses a pole end (30) which is adapted to be fitted to the pole (10), and wherein the brace line apertures have rollers which minimize the resistance of the brace lines (15, 14) feeding therethrough. The body of the pole end (30) is also tapered over a portion of its length which is beyond the anchoring points of the topping lift line and the kicker line.
    Type: Grant
    Filed: October 5, 1993
    Date of Patent: September 20, 1994
    Inventor: Peter M. McAlpine