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

Electrodeless lamp having hybrid cavity

Patent 4954755 Issued on September 4, 1990. Estimated Expiration Date: Icon_subject April 4, 2008. 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

Microwave generated radiation apparatus
Patent #: 4042850
Issued on: 08/16/1977
Inventor: Ury ,   et al.

Microwave oven excitation system for promoting uniformity of energy distribution
Patent #: 4144436
Issued on: 03/13/1979
Inventor: Hauck

Electromagnetic discharge apparatus with double-ended power coupling
Patent #: 4266162
Issued on: 05/05/1981
Inventor: McNeill ,   et al.

Method and apparatus for igniting electrodeless discharge lamp
Patent #: 4359668
Issued on: 11/16/1982
Inventor: Ury

Microwave generated plasma light source apparatus
Patent #: 4498029
Issued on: 02/05/1985
Inventor: Yoshizawa ,   et al.

Electrodeless lamp using a single magnetron and improved lamp envelope therefor
Patent #: 4504768
Issued on: 03/12/1985
Inventor: Ury ,   et al.

Microwave generated electrodeless lamp for producing bright output Patent #: 4507587
Issued on: 03/26/1985
Inventor: Wood ,   et al.

Inventors

Assignee

Application

No. 177434 filed on 04/04/1988

US Classes:

315/248, Induction-type discharge device load315/39, Discharge device load with distributed parameter-type transmission line (e.g., wave-guide, coaxial cable)315/246PULSATING OR A.C. SUPPLY

Examiners

Primary: Boudreau, Leo H.
Assistant: Razavi, Michael

Attorney, Agent or Firm

Foreign Patent References

  • 123954 JP. 08/13/1985

International Class

H05B 041/16

Abstract

A microwave powered electrodeless lamp which employs a hybrid cylindrical cavity which is part mesh and part solid. The cylindrical mesh portion permits the lamp to be used with an external reflector while the cylindrical solid portion enables a plurality of waveguides to be coupled to the cavity for high power operation.

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