Valve lifter body

  • US 7,128,034 B2
  • Filed: 10/18/2002
  • Issued: 10/31/2006
  • Est. Priority Date: 10/18/2002
  • Status: Expired due to Fees
First Claim
Patent Images

1. A valve lifter body that is generally cylindrical about an axis and provided with a first end and a second end, comprising:

  • a) the valve lifter body has been cold formed, at least in part, to provide a first cavity and a second cavity;

    b) an outer surface that encloses the first cavity and the second cavity;

    c) the first end of the valve lifter body includes a first opening shaped to accept a roller;

    d) the first cavity includes a first inner surface that is provided with a first wall, a second wall, a third wall, a fourth wall, a first angled wall, a second angled wall, a third angled wall fourth angled wall, a first angled surface, a second angled surface, a third angled surface, and a fourth angled surface;

    e) the walls extend axially into the valve liter body from the first opening and are positioned so that the first wall faces the second wall and the third wall faces the fourth wall;

    f) the first angled wall extends axially into the valve lifter body from the first opening and terminates, at least in part, at the first angled surface that is located adjacent to the first wall and the fourth wall;

    g) the second angled wall extends axially into the valve lifter body from the first opening and terminates, at least in part, at the third angled surface that is located adjacent to the second wall and the third wall;

    h) the third angled wall extends axially into the valve lifter body from the first opening and terminates, at least in part, at the fourth angled surface that is located adjacent to the second wall and the fourth wall;

    i) the fourth angled wall extends axially into the valve lifter body from the first opening and terminates, at least in part, at the second angled surface that is located adjacent to the first wall and the third wall;

    j) the second end of the valve lifter body includes a second opening; and

    k) the second cavity extends axially into the valve lifter body from the second opening and includes a second inner surface that has been machined, at least in part, to provided a plurality of cylindrical surfaces and configured to accommodate a lash adjuster body, a socket body, and a leakdown plunger.

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