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US5447105A Expired / Lapsed US ⏱️ 0.0 years remaining

Gas generator

Assignee: ZF Airbag Germany GmbH
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Filing: 1994-11-04
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Granted: 1995-09-05
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Expires: 2014-11-04
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Abstract

Abstract An essentially cylindrical gas generator for generating combustion gases. The gas generator includes a housing having gas outlet openings; a combustion chamber surrounded by the housing; gas-generating fuel disposed in the combustion chamber; an igniting device disposed in the combustion chamber for igniting the fuel; a first filter disposed between the fuel and the gas outlet openings for prefiltering generated gases upon passage thereof from the combustion chamber through the first filter toward the outlet openings; a second filter disposed between the first filter and the outlet openings for filtering the gases upon passage thereof from the first filter through the second filter; and a generally tubular body surrounding the second filter. The tubular body is surrounded by the housing, and is composed of a plurality of third filters and a plurality of guide plates circumferentially alternating with the third filters. The guide plates are disposed in a path of the gases exiting from the second filter, for guiding the gases in a circumferential direction along the second filter to the third filters for passage therethrough and through the outlet openings.

Inventors

  • 👤 Hermann Bauer
  • 👤 Richard Bender
  • 👤 Rudolf Hawly

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 20:52
CPC Classifications
B; B60; B60R; B60R21/00; B60R21/02; B60R21/16; B60R21/26; B60R21/264; B60R21/2644; F; F42; F42B; F42B3/00; F42B3/04

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 189 words
An essentially cylindrical gas generator for generating combustion gases, comprising (a) a housing having gas outlet openings; (b) means for defining a combustion chamber surrounded by said housing; (c) gas-generating fuel disposed in said combustion chamber; (d) igniting means disposed in said combustion chamber for igniting said fuel; (e) a first filter disposed between said fuel and the gas outlet openings for prefiltering generated gases upon passage thereof from the combustion chamber through said first filter toward said outlet openings; (f) a second filter disposed between said first filter and said outlet openings for filtering the gases upon passage thereof from said first filter through said second filter; and (g) a generally tubular body surrounding said second filter; said tubular body being surrounded by said housing and being composed of (1) a plurality of third filters and (2) a plurality of guide plates circumferentially alternating with said third filters; said guide plates being disposed in a path of the gases, exiting from said second filter, for guiding the gases in a circumferential direction along said second filter to said third filters for passage therethrough and through said outlet openings.
Claim 2
Dependent Claim 189 words
An essentially cylindrical gas generator for generating combustion gases, comprising (a) a housing having gas outlet openings; (b) means for defining a combustion chamber surrounded by said housing; (c) gas-generating fuel disposed in said combustion chamber; (d) igniting means disposed in said combustion chamber for igniting said fuel; (e) a first filter disposed between said fuel and the gas outlet openings for prefiltering generated gases upon passage thereof from the combustion chamber through said first filter toward said outlet openings; (f) a second filter disposed between said first filter and said outlet openings for filtering the gases upon passage thereof from said first filter through said second filter; and (g) a generally tubular body surrounding said second filter; said tubular body being surrounded by said housing and being composed of (1) a plurality of third filters and (2) a plurality of guide plates circumferentially alternating with said third filters; said guide plates being disposed in a path of the gases, exiting from said second filter, for guiding the gases in a circumferential direction along said second filter to said third filters for passage therethrough and through said outlet openings.
Claim 3
Dependent Claim 21 words
The gas generator as defined in claim 1, wherein said outlet openings are arranged in diametrically oppositely located outlet opening zones.
Claim 4
Dependent Claim 20 words
The gas generator as defined in claim 2, wherein said third filters are situated solely in said outlet opening zones.
Claim 5
Dependent Claim 16 words
The gas generator as defined in claim 1, wherein said third filters are wire mesh filters.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1998-09-04 1999-03-06 1999-09-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2002-09-04 2003-03-06 2003-09-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2006-09-04 2007-03-06 2007-09-05 $7700.00 Window Closed / Lapsed

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