Patents by Inventor Nils A. Nelander

Nils A. Nelander 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).

  • Switch-over valve, preferably for an air drier
    Patent number: 4781209
    Abstract: A switch-over valve for directing a compressed air flow to either one of two drying towers of an air drier, the other one being vented to the atmosphere. The valve is arranged in a partition wall between the two towers, a conduit to the valve being provided in the partition wall. A valve body is axially movable in a cavity in the wall between two positions sealing off either one of the outlets from the cavity and keeping the other one open. A control piston with a greater length than the valve body is axially movable in a bore in the valve body and is biased towards a neutral position by spring means.
    Type: Grant
    Filed: November 2, 1987
    Date of Patent: November 1, 1988
    Assignee: Garphyttan Haldex AB
    Inventors: Nils A. Nelander, Lars A. vall
  • Drain valve, preferably for a vehicle brake system
    Patent number: 4457337
    Abstract: A vehicle brake system drain valve comprises a housing (1-4), a solenoid therein and a valve element (15) movable between two seats (12, 13) in the valve.A neck (4), which is a part of the housing, is conditionally rotatable relative to the remainder of the housing and has a ventilating channel (20) leading to the atmosphere if not covered by a sealing ring (18).
    Type: Grant
    Filed: March 23, 1982
    Date of Patent: July 3, 1984
    Assignee: SAB Automotive AB
    Inventors: Sten E. O. Andersson, Nils A. Nelander