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Elastomeric push button return element for providing enhanced tactile feedback

  • US 4,604,509 A
  • Filed: 02/01/1985
  • Issued: 08/05/1986
  • Est. Priority Date: 02/01/1985
  • Status: Expired due to Term
First Claim
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1. A resilient element for return biasing of a push button adapted for movement along an axis transverse to a mounting surface, the resilient element being formed of elastomeric material in a configuration comprising:

  • a tubular section extending along the axis, said tubular section having first and second ends and a predetermined wall thickness;

    a flange having an outer portion with a lower surface to be held in contact with the mounting surface and an annular inner web portion extending radially with respect to the axis and joining the outer portion of said flange and the first end of said tubular section, the web portion having a lower surface which is continuous with the lower surface of the outer portion and having a thickness less than the wall thickness of said tubular section;

    a hollow frustum section extending along the axis and having a large end joined to the second end of said tubular section and a small end more remote from the mounting surface than the large end; and

    a crown configured to connect the small end of said hollow frustum section to the push button.

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