Patents by Inventor Frederick J. Ransom

Frederick J. Ransom 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: 4342369
    Abstract: An ansate self-propelled appliance, such as a self-propelled upright floor covering vacuum cleaner is provided with a slidable hand or control grip comprising a pair of clam-shell hand grip halves held on the distal end portion of the cleaner handle by a pair of transverse screws or other fasteners. A rotatable ring is also mounted with the hand grip halves at the forward end portions thereof which has at least one generally arcuate detent spring constructed and arranged to cooperate with and be selectively engagable within a pair of detent apertures or recesses angularly spaced apart around the handle tube. One of said detent apertures or recesses is longitudinally elongated so as to define a slot and enable said detent to slide longitudinally therein for self-propelled operation of the cleaner in response to sliding movement of the hand grip.
    Type: Grant
    Filed: October 23, 1980
    Date of Patent: August 3, 1982
    Assignee: The Singer Company
    Inventor: Frederick J. Ransom