Auto-release vacuum device

  • US 7,681,603 B2
  • Filed: 05/08/2009
  • Issued: 03/23/2010
  • Est. Priority Date: 07/11/2005
  • Status: Active Grant
First Claim
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1. An automatic release vacuum device for a material handling system, the automatic release vacuum device comprising:

  • a unitary body adapted to connect to a pressurized air supply, the unitary body including a vacuum passageway and a venting element, the vacuum passageway operable to vent to atmosphere through the venting element;

    a vacuum generating device housed in the unitary body;

    a piston element housed in the unitary body, the piston element disposed along an axis in the unitary body, and being movable along the axis between a sealing position closing off the vacuum passageway to atmosphere and a venting position opening the vacuum passageway to atmosphere; and

    when the piston element is in the sealing position and when the pressurized air supply is activated to supply pressurized air to the vacuum generating device at least a partial vacuum is generated in the vacuum passageway.

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