Spark Plugs Patents (Class 174/138S)
  • Patent number: 5063012
    Abstract: A method is shown for reducing the degrading effect of heat upon an elastomeric component used in the engine compartment of a vehicle. The elastomeric component is first formed into the desired shape and then sprayed with a heat resistant, heat reflecting paint to create a reflective surface on the component which reduces the effect of radiant heat present in the surrounding environment and improves the life expectancy of the component.
    Type: Grant
    Filed: November 6, 1989
    Date of Patent: November 5, 1991
    Assignee: JMK International, Inc.
    Inventor: Robert M. Gibbon
  • Patent number: 4797115
    Abstract: An elastomer angled boot for an angled spark plug cable terminal having an angular bend of between 90.degree. and 180.degree.. The angled boot has two protuberances, the first protuberance providing a pressing surface and the second protuberance providing a pulling surface. Each of the pressing and pulling surfaces is oriented in a plane perpendicular to the spark plug insertion axis, and serve as an aid during installation on, and removal from the spark plug. A concave notch is provided at the bend in the spark plug cable terminal which interlockingly cooperates with a convex knob on the angled boot to prevent relative slippage therebetween.
    Type: Grant
    Filed: November 13, 1987
    Date of Patent: January 10, 1989
    Assignee: Prestolite Wire Corporation
    Inventors: Ronald P. Sturdevan, Alexander J. Pickelhaupt
  • Patent number: 4770642
    Abstract: A connector for terminating the distributor end of ignition cables includes a conductive insert fitted within an outer boot. A spring-lock barrel of the conductive insert is arranged within a generally cylindrical head portion of the boot and a wire-piercing prong which extends radially outwardly from the barrel extends generally centrally into a cylindrical neck portion of the boot. The neck portion has a hinged cover with insulation piercing prongs to prevent axial withdrawal of a cable from the connector.
    Type: Grant
    Filed: August 29, 1983
    Date of Patent: September 13, 1988
    Inventor: James S. Van Hoose
  • Patent number: 4621881
    Abstract: A connection device in an ignition system for transferring current to the spark plugs of an internal combustion engine includes a comparatively rigid outer sleeve intended to surround an upper portion of a spark plug, a contact for conductive communication with a central electrode of the spark plug, an elastic inner sleeve surrounded by the outer sleeve for tightly sealing against the upper portion of the spark plug when the connection device is fitted to the spark plug, a space being formed between the outer sleeve and the inner sleeve for allowing radial expansion of the inner sleeve, the outer sleeve and the inner sleeve having lower portions which include coacting portions for transferring force between the outer and inner sleeves, whereby for an upwardly directed force on the connection device fitted to the spark plug, force is transferred from the outer sleeve to the inner sleeve, and causes the inner sleeve to relinquish the spark plug.
    Type: Grant
    Filed: April 2, 1985
    Date of Patent: November 11, 1986
    Assignee: Saab-Scania Aktiebolag
    Inventors: Sven H. Johansson, Jan G. Nytomt