Patents by Inventor Dennis G. Lawrence

Dennis G. Lawrence 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: 4784545
    Abstract: A dual load trailer having upper and lower decks pivotally attached to each other by pivot arms, which are biased by means of torsion bar assemblies to apply a downward force upon the upper deck when the upper deck is in a fully raised position, and an upward force when the upper deck is in a fully lowered position. A slideable wheel carriage assembly is provided to facilitate tongue weight adjustment and access to the doors of vehicles transported on the lower deck.
    Type: Grant
    Filed: April 27, 1987
    Date of Patent: November 15, 1988
    Inventor: Dennis G. Lawrence
  • Patent number: 4060861
    Abstract: A protective device in the nature of a latch to hold a toilet lid against being raised by a toddler and comprising a foot that slips under the toilet seat per se from the rear of the toilet bowl and rests on the surface of the toilet bowl, a column thereon which may be adjustable in height, and a relatively enlarged elongated hold-down member on the column and extending over the lid of the toilet from the rear thereof, the foot and hold-down member being rigid.
    Type: Grant
    Filed: May 12, 1976
    Date of Patent: December 6, 1977
    Inventors: Dennis G. Lawrence, Anne M. Lawrence