U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Tube activated cartridge/fitting valve

Patent 7455280 Issued on November 25, 2008. Estimated Expiration Date: Icon_subject December 15, 2024. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

2744770

2919935

3532101

3567175

Thermal responsive coupling
Patent #: 4280523
Issued on: 07/28/1981
Inventor: Norton

Quick connect coupling
Patent #: 4436125
Issued on: 03/13/1984
Inventor: Blenkush

Sampling valve
Patent #: 4699356
Issued on: 10/13/1987
Inventor: Hargrove ,   et al.

Cooling apparatus on a plastics injection molding machine
Patent #: 4768559
Issued on: 09/06/1988
Inventor: Hehl

Coupling with fusible actuator member
Patent #: 4792115
Issued on: 12/20/1988
Inventor: Jindra ,   et al.

Automatic coupler for pressurized fluid circuit
Patent #: 5002254
Issued on: 03/26/1991
Inventor: Belisaire, et al.

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Inventor

Assignee

Application

No. 11012476 filed on 12/15/2004

US Classes:

251/149.6Motion opposed by valve spring

Examiners

Primary: Hepperle, Stephen M.
Assistant: Rost, Andrew J.

Attorney, Agent or Firm

Foreign Patent References

  • 2069083 GB 08/01/1981

International Classes

F16L 37/28
B29C 45/14

Abstract

The present invention provides a releasable tube fitting that provides secure connection of a tube to the fitting while the fitting is under pressure. Further, the present invention provides a fitting that may be used with a more flexible tube than conventional fittings. The fitting of the present invention also provides for connection of a tube to the fitting when the fitting is under higher operational pressure than conventional fittings. A cartridge including the fitting of the present invention is also disclosed.

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