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Title: Fast shutter apparatus

Abstract

An apparatus for protecting diagnostic equipment from blast damage by rapidly interposing a shutter between the equipment and the blast area. The apparatus comprises a sensor for sensing a trigger signal associated with the blast and for converting it into a voltage pulse. The voltage pulse is received by the first end of a firing pin. A pressure chamber holds a gas under pressure. The second end of the firing pin is located inside the pressure chamber and is located above a foil member covering an orifice. When the voltage pulse reaches the second end, a point-to-plane discharge ruptures the foil, allowing the gas to enter a drive housing and quickly move a drive piston away from the foil. A drive rod connects the drive piston to a shutter and as the drive piston is moved down, the shutter moves into a closed position, protecting the equipment from debris.

Inventors:
 [1];  [2]
  1. (Santa Fe, NM)
  2. (Los Alamos, NM)
Issue Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM
OSTI Identifier:
865441
Patent Number(s):
4515173
Assignee:
United States of America as represented by United States (Washington, DC) LANL
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
fast; shutter; apparatus; protecting; diagnostic; equipment; blast; damage; rapidly; interposing; comprises; sensor; sensing; trigger; signal; associated; converting; voltage; pulse; received; firing; pressure; chamber; holds; gas; located; inside; foil; covering; orifice; reaches; point-to-plane; discharge; ruptures; allowing; enter; drive; housing; quickly; move; piston; rod; connects; moved; moves; closed; position; debris; located inside; voltage pulse; pressure chamber; apparatus comprises; closed position; trigger signal; pulse reaches; apparatus comprise; drive rod; diagnostic equipment; /137/251/

Citation Formats

Zimmermann, Eugene L., and Kania, Don R. Fast shutter apparatus. United States: N. p., 1985. Web.
Zimmermann, Eugene L., & Kania, Don R. Fast shutter apparatus. United States.
Zimmermann, Eugene L., and Kania, Don R. Tue . "Fast shutter apparatus". United States. https://www.osti.gov/servlets/purl/865441.
@article{osti_865441,
title = {Fast shutter apparatus},
author = {Zimmermann, Eugene L. and Kania, Don R.},
abstractNote = {An apparatus for protecting diagnostic equipment from blast damage by rapidly interposing a shutter between the equipment and the blast area. The apparatus comprises a sensor for sensing a trigger signal associated with the blast and for converting it into a voltage pulse. The voltage pulse is received by the first end of a firing pin. A pressure chamber holds a gas under pressure. The second end of the firing pin is located inside the pressure chamber and is located above a foil member covering an orifice. When the voltage pulse reaches the second end, a point-to-plane discharge ruptures the foil, allowing the gas to enter a drive housing and quickly move a drive piston away from the foil. A drive rod connects the drive piston to a shutter and as the drive piston is moved down, the shutter moves into a closed position, protecting the equipment from debris.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {1}
}

Patent:

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