Patents by Inventor Gustaf Sperr

Gustaf Sperr 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: 5033458
    Abstract: An arrangement for a seat intended to be fitted in the back-rest of the seat in order to massage the back of a person sitting in the seat. The arrangement comprises two identical pulsators (5) intended to be accommodated in recesses in the padding material of the seat. Each pulsator (5) comprises an electrical drying motor (11) for driving a number of massage elements (29-32). The driving motors (11) are connected to a common electrical control system which, during a time-limited work cycle, intermittently supplies the driving motors (11) with voltage.
    Type: Grant
    Filed: April 12, 1990
    Date of Patent: July 23, 1991
    Assignee: Saab-Scania AB
    Inventor: Gustaf Sperr
  • Patent number: 4637651
    Abstract: Seat plate (10) for supporting the pelvis of a person sitting in a seat (2), e.g. a seat in a vehicle. Known seat implementations only give limited support in a horizontal direction. This causes a noticeable problem in vehicle seats, since a person sitting on one is subjected to accelerations and retardations in both longitudinal and transverse directions. The muscles which are activated in such cases become tired relatively quickly, often resulting in that an incorrect sitting attitude is assumed which can give rise to skew loads as well as accelerating and amplifying the sense of tiredness and soreness. The invention relates to a seat plate (10) for positioning the pelvis of a sitting person so that no notable muscular work is required for maintaiing a correct sitting attitude. The seat plate (10) is thus formed with two raised, scythe-like ridges (11) each including a forward transverse ridge portion (13) and a longitudinal ridge portion (14) extending backwords from the transverse portion (13).
    Type: Grant
    Filed: April 4, 1985
    Date of Patent: January 20, 1987
    Assignee: Saab-Scania Aktiebolag
    Inventor: Gustaf A. Sperr