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US3920476A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrode gap control for electro chemical batteries and heat generation systems

Assignee: United States Department of the Navy
•
Filing: 1974-09-19
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Granted: 1975-11-18
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Expires: 1994-09-19
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Abstract

Abstract A simple and economical means for controlling the electrode gap in an electrochemical cell that depends on the gap for control of power output. As the anode is consumed, a conical spacer attached to the cathode is allowed to move into a conical hole in the anode, thus controlling the electrode gap.

Inventors

  • 👤 Stanley A Black
  • 👤 Sergius S Sergev

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 21:08
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/04; H01M10/0413; C; C25; C25B; C25B15/00; C25B15/04; F; F24; F24V; F24V30/00; H01M10/0468; H01M6/00; H01M6/30; H01M6/32; H01M6/34; H01M6/50; H05; H05B; H05B3/00; H05B3/60; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02P; Y02P70/00; Y02P70/50

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 215 words
AN ELECTRODE GAP CONTROL SUSTEM SYSTEM COMPRISING ELECTROCHEMICAL ENERGY PRODUCING CELLS HAVING A CONDUMABLE ANODE AND AN INERT CATHODE IMMERSED IN A LIQUID ELECTROLYTE, THE IMPROVEMENT COMPRISING: A. AT LEAST ONE ANODE ELECTRODE SPACER MEANS MOUNTED ON SAID ELECTRODE; B. A PLURALITY OF ELECTRODE SPACER MEANS MOUNTED ON AN PROJECTING FROM SAID AT LEAST ONE CATHODE ELECTRODE FROM SAID SPACING SAID AT LEAST ONE CATHODE ELECTRODE FROM SAID AT LEAST ONE ANODE ELECTRODE; C. THE WIDTH OF EACH SAID PROJECTING SPACER MEANS BECOMING GRADUALLY NARROWER AS IT EXTENDS FROM THE CATHODE ELECTRODE SURFACE UNTIL IT REACHES ITS APEX; D. A PLURALITY OF CHAMFERED HOLES IN THE ANODE ELECTRODE, EQUAL TOAND MATCHING RESPECTIVE SPACERMEANS ON THE ADJACENT SURFACE OF THE CATHODE ELECTRODE,IN WHICH THE RESPECTIVE APEX ENDS OF SAID SPACER MEANS SEAT; E. THE INCLUDED ANGLE OF SAID CHAMFERED HOLES BEING GREATER THAN THE INCLUDED ANGLE FORMED BY THE SIDES OF SAID SPACER MEANS; F. MEANS FOR PROVIDING A LOADING FORCE ON SAID ANODE AND CATHODE ELECTRODES IN A DIRECTION TOWARD EACH OTHER; G. THE APEX OF SAID SPACER MEANS TRAVELING THROUGH SAID CHAMFERED HOLES AS THE SURFACE OF THE ANODE ELECTRODE IS CONSUMED BY ELECTROLYTE ACTION., RESULTING IN THE CHAMFERED HOLES BECOMING LARGER AND THEREBY AUTOMATICALLY ADJUSTING THE SPACER BETWEEN SAID ANODE AND CATHODE ELECTRODES.
Claim 2
Dependent Claim 215 words
AN ELECTRODE GAP CONTROL SUSTEM SYSTEM COMPRISING ELECTROCHEMICAL ENERGY PRODUCING CELLS HAVING A CONDUMABLE ANODE AND AN INERT CATHODE IMMERSED IN A LIQUID ELECTROLYTE, THE IMPROVEMENT COMPRISING: A. AT LEAST ONE ANODE ELECTRODE SPACER MEANS MOUNTED ON SAID ELECTRODE; B. A PLURALITY OF ELECTRODE SPACER MEANS MOUNTED ON AN PROJECTING FROM SAID AT LEAST ONE CATHODE ELECTRODE FROM SAID SPACING SAID AT LEAST ONE CATHODE ELECTRODE FROM SAID AT LEAST ONE ANODE ELECTRODE; C. THE WIDTH OF EACH SAID PROJECTING SPACER MEANS BECOMING GRADUALLY NARROWER AS IT EXTENDS FROM THE CATHODE ELECTRODE SURFACE UNTIL IT REACHES ITS APEX; D. A PLURALITY OF CHAMFERED HOLES IN THE ANODE ELECTRODE, EQUAL TOAND MATCHING RESPECTIVE SPACERMEANS ON THE ADJACENT SURFACE OF THE CATHODE ELECTRODE,IN WHICH THE RESPECTIVE APEX ENDS OF SAID SPACER MEANS SEAT; E. THE INCLUDED ANGLE OF SAID CHAMFERED HOLES BEING GREATER THAN THE INCLUDED ANGLE FORMED BY THE SIDES OF SAID SPACER MEANS; F. MEANS FOR PROVIDING A LOADING FORCE ON SAID ANODE AND CATHODE ELECTRODES IN A DIRECTION TOWARD EACH OTHER; G. THE APEX OF SAID SPACER MEANS TRAVELING THROUGH SAID CHAMFERED HOLES AS THE SURFACE OF THE ANODE ELECTRODE IS CONSUMED BY ELECTROLYTE ACTION., RESULTING IN THE CHAMFERED HOLES BECOMING LARGER AND THEREBY AUTOMATICALLY ADJUSTING THE SPACER BETWEEN SAID ANODE AND CATHODE ELECTRODES.
Claim 3
Dependent Claim 13 words
A system as in claim 1 wherein said spacer means are cone shaped.
Claim 4
Dependent Claim 15 words
A system as in claim 1 wherein said spacer means is made from inert material.
Claim 5
Dependent Claim 17 words
A system as in claim 1 wherein said spacer means is made from a hard plastic material.
Claim 6
Dependent Claim 42 words
A system as in claim 1 wherein the chamfer angle of said chamfered holes and the spacer means apex angle can be adjusted to provide any of constant, increasing, decreasing, and non-linear control of the spacing between the anode and cathode electrodes.
Claim 7
Dependent Claim 49 words
A system as in claim 1 wherein the amount and rate of travel over an operating period for a cell is determined by the relationship between the degree of the chamfer angle of said chamfered holes and the degree of the angle of the sides of said spacer means.
Claim 8
Dependent Claim 27 words
A system as in claim 1 wherein the apex end of said spacer means seat in and extend into said chamfered holes from the narrowest opening therein.
Claim 9
Dependent Claim 15 words
A system as in claim 1 wherein said anode and cathode electrodes are electrically short-circuited.
Claim 10
Dependent Claim 16 words
A system as in claim 1 wherein said spacer elements are made from the cathode material.
Claim 11
Dependent Claim 59 words
A system as in claim 1 wherein a plurality of alternating anode and cathode electrodes are stacked together, said cathode electrodes having said spacer means protruding toward said anode electrodes and said anode electrodes having chamfered holes from both sides thereof, the outer electrodes at each end of said stack being cathodes against which said loading forces are applied.

References Cited (Backward Citations)

US2938066A Cited
US2976342A Cited
US3527612A Cited
US3536535A Cited
US3730776A Cited
US3657017A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-11-17 1979-05-19 1979-11-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-11-17 1983-05-19 1983-11-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-11-17 1987-05-19 1987-11-18 $7700.00 Window Closed / Lapsed

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