Patents by Inventor Douglas Hemphill

Douglas Hemphill 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: 6178911
    Abstract: An automatically inflatable boat including at least two separate compartments which are connected to one another by an intercommunicating valve which can be opened to connect adjacent compartments or closed to isolate adjacent compartments. The inflatable boat is provided with a gas pump permanently mounted on the boat and in fluid communication with a connection for receiving pressurized gas of at least one of the inflatable compartments. The pump can be actuated in order to automatically inflate the inflatable compartments of the boat to a preset pressure. Also shown is an inflatable enclosure which can be deflated and inflated and to house an adult and a commode to provide privacy.
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: January 30, 2001
    Assignee: Zodiac Hurricane Technologies, Inc.
    Inventors: Douglas Hemphill, Gary Dale
  • Patent number: 5878685
    Abstract: A foam collar system for boats which is affixed to the external surface of the boat hull. The foam collar system is formed from a molded polymeric foam material, a reinforcement coating on the outer surface of the polymeric foam and a surface coating on at least a portion of the reinforcement coating. The foam collar acts as a fender for the boat during boarding of other craft or mooring. In this manner, a durable, highly attractive foam fender system for high speed boats with planing hulls is provided. Also disclosed is a method for making the foam collar and a boat including the foam collar. The foam fender does not require inflation, it can be fabricated in an aesthetically pleasing manner, it is durable and it is inexpensive to make and maintain.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: March 9, 1999
    Assignee: Zodiac Hurricane Technologies, Inc.
    Inventors: Douglas Hemphill, Gary Dale
  • Patent number: 5832864
    Abstract: A diver's door which provides easy access to and from an inflatable boat for a diver and which can be replaced to minimize water leakage into the deck of the boat, is described. The diver's door is a removable tube element provided with a flexible flange which fits into a slot along the top edge of the hull. The removable tube element includes at least one peripheral hoop flange at one end for maintaining the removable tube element in position when fully inflated. Also disclosed are an inflatable boat including the diver's door of the present invention and a method for providing access to an inflatable boat using the diver's door of the present invention.
    Type: Grant
    Filed: June 17, 1997
    Date of Patent: November 10, 1998
    Assignee: Zodiac Hurricane Technologies, Inc.
    Inventor: Douglas Hemphill
  • Patent number: 5584260
    Abstract: A device for joining an inflatable tube to the hull and deck of an inflatable boat. The device includes an outwardly extending deck flange having a trough therein and an outwardly extending hull flange positioned adjacent to the deck flange. The inflatable tube is provided with a tube connector member which is adapted to fit into the trough in the deck flange. An attachment member engages the outward edges of the deck flange and hull flange and includes an attachment flange adapted to extend over a portion of the trough to create a channel in which the tube connector element is received whereby the tube connector element is retained in the trough.
    Type: Grant
    Filed: September 11, 1995
    Date of Patent: December 17, 1996
    Assignee: Zodiac Hurricane Technologies, Inc.
    Inventor: Douglas Hemphill
  • Patent number: 5579714
    Abstract: A diver's door which provides easy access to and from an inflatable boat for a diver and which can be replaced to minimize water leakage into the deck of the boat, is described. The diver's door includes a removable support section including a device for releasably attaching the support section to the deck of a boat and a corresponding removable tube element attached to the removable support section to form a single unit removable from the deck of a boat. Also disclosed are an inflatable boat including the diver's door of the present invention and a method for providing access to an inflatable boat using the diver's door of the present invention.
    Type: Grant
    Filed: August 3, 1995
    Date of Patent: December 3, 1996
    Assignee: Zodiac Hurricane Technologies, Inc.
    Inventor: Douglas Hemphill
  • Patent number: D407298
    Type: Grant
    Filed: December 24, 1997
    Date of Patent: March 30, 1999
    Assignee: Zodiac Hurricane Technologies, Inc.
    Inventor: Douglas Hemphill