Patents by Inventor John Stanley Eckersley

John Stanley Eckersley 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).

  • Impact absorption devices and valve structure
    Patent number: 3948499
    Abstract: An impact absorber, particularly for automobile fenders, comprising a cylinder, a piston on one end of a piston rod and slidable in the cylinder, an annular partition slidable on the piston rod, and a valve carried by the piston and allowing, on compression of the impact absorber, flow from the chamber beyond the piston to the annular chamber between the piston and the partition. The valve is biased in the closing direction by a spring and has a valve member with opposed differential areas which are exposed to the pressure in the said chamber and are selected to bias the valve in the opening direction.
    Type: Grant
    Filed: September 6, 1974
    Date of Patent: April 6, 1976
    Assignee: Jonas Woodhead Limited
    Inventors: John Stanley Eckersley, Peter Noble