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Peter V Purgalis

from San Francisco, CA
Age ~83

Peter Purgalis Phones & Addresses

  • 137 Jersey St, San Francisco, CA 94114 (415) 285-1425
  • Anderson Island, WA

Work

Position: Professional/Technical

Education

Degree: Associate degree or higher

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Renewables & Environment

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Resumes

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Independent Renewables &Amp; Environment Professional

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Location:
San Francisco Bay Area
Industry:
Renewables & Environment

Publications

Us Patents

Large Area Directly Heated Lanthanum Hexaboride Cathode Structure Having Predetermined Emission Profile

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US Patent:
47959401, Jan 3, 1989
Filed:
Oct 14, 1987
Appl. No.:
7/108327
Inventors:
Ka-Ngo Leung - Hercules CA
Keith C. Gordon - Berkeley CA
Dean O. Kippenham - Castro Valley CA
Peter Purgalis - San Francisco CA
David Moussa - San Francisco CA
Malcom D. Williams - Danville CA
Stephen B. Wilde - Pleasant Hill CA
Mark W. West - Albany CA
Assignee:
The United States of America as represented by the United States
Department of Energy - Washington DC
International Classification:
H01J 114
H01J 116
H01J 1910
US Classification:
313346R
Abstract:
A large area directly heated lanthanum hexaboride (LaB. sub. 6) cathode system (10) is disclosed. The system comprises a LaB. sub. 6 cathode element (11) generally circular in shape about a central axis. The cathode element (11) has a head (21) with an upper substantially planar emission surface (23), and a lower downwardly and an intermediate body portion (26) which diminishes in cross-section from the head (21) towards the base (22) of the cathode element (11). A central rod (14) is connected to the base (22) of the cathode element (11) and extends along the central axis. Plural upstanding spring fingers (37) are urged against an outer peripheral contact surface (24) of the head end (21) to provide a mechanical and electrical connection to the cathode element (11).
Peter V Purgalis from San Francisco, CA, age ~83 Get Report