Patents by Inventor Nils K. G. Rosenqvist

Nils K. G. Rosenqvist 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).

  • Double-acting hot gas engine assemblage
    Patent number: 4330994
    Abstract: A number of hot gas engine units each having a plurality of pistons working upon two parallel crank shafts may form an assemblage of relative short axial length by axially connecting one crank shaft of each unit to a crank shaft of another unit and locating the other crank shaft of each unit at alternating sides of the axially connected crank shafts.
    Type: Grant
    Filed: November 5, 1979
    Date of Patent: May 25, 1982
    Assignee: Kommanditbolaget United Stirling AB & Co.
    Inventor: Nils K. G. Rosenqvist
  • Multi-cylinder double-acting hot gas engine
    Patent number: 4195554
    Abstract: A hot gas engine of the Stirling type having a cylinder and associated piston, piston rod and cross-head, wherein the seals for the cylinder and piston rod are carried in a seal assembly unit clamped between separable engine housing parts. The seal assembly unit includes a guide for the cross-head.
    Type: Grant
    Filed: March 7, 1978
    Date of Patent: April 1, 1980
    Assignee: Kommanditbolaget United Stirling (Sweden) AB & Co.
    Inventor: Nils K. G. Rosenqvist
  • Double-acting hot gas engine assemblage
    Patent number: 4191019
    Abstract: Hot gas engine units of the type having parallel cylinders in two parallel rows and containing pistons connected to two parallel crank shafts engaging a common third output shaft are juxtaposed into an assemblage of four such units. The output shaft is common to all four units and each of four crank shafts is connected to pistons in cylinders of adjacent rows of neighboring units. In such assemblage the total number of crank shafts in four units is reduced from eight to four and one output shaft will replace four output shafts.
    Type: Grant
    Filed: April 14, 1978
    Date of Patent: March 4, 1980
    Assignee: Kommanditbolaget United Stirling (Sweden) AB & Co.
    Inventors: Jan C. Bratt, Bengt-Ove M. Moodysson, Nils K. G. Rosenqvist