Patent US3852176A successfully refreshed from Google Patents.
US3852176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Embrittlement machining method
Assignee: Calspan Corp
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Filing: 1972-12-06
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Granted: 1974-12-03
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Expires: 1992-12-06
Abstract
Abstract Embrittlement machining apppartus having an electrolytic container, an anode, a workpiece immersed in the electrolyte forming a cathode, a cutting head adjacent the workpiece and a conduit for supplying an embrittlement agent adjacent the workpiece and adjacent the cutting head.
Inventors
- 👤 P Rosenthal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:17
CPC Classifications
B; B23; B23P; B23P25/00
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
7 words
EMBRITTLEMENT MACHINING METHOD COMPRISING THE STEPS OF:
Claim 2
Dependent Claim
7 words
EMBRITTLEMENT MACHINING METHOD COMPRISING THE STEPS OF:
Claim 3
Dependent Claim
14 words
PLACING IN A CONTAINER AN ELECTROLYTIC SOLUTION THE MAIN CONSTITUENT OF WHICH IS ALCOHOL,
Claim 4
Dependent Claim
14 words
PLACING IN A CONTAINER AN ELECTROLYTIC SOLUTION THE MAIN CONSTITUENT OF WHICH IS ALCOHOL,
Claim 5
Dependent Claim
16 words
IMMERSING A WORKPIECE HAVING A PORTION TO BE MACHINED IN SAID SOLUTION ADJACENT A CUTTING HEAD,
Claim 6
Dependent Claim
16 words
IMMERSING A WORKPIECE HAVING A PORTION TO BE MACHINED IN SAID SOLUTION ADJACENT A CUTTING HEAD,
Claim 7
Dependent Claim
16 words
immersing a workpiece having a portion to be machined in said solution adjacent a cutting head,
Claim 8
Dependent Claim
16 words
immersing a workpiece having a portion to be machined in said solution adjacent a cutting head,
Claim 9
Dependent Claim
7 words
The method according to claim 1, wherein:
Claim 10
Dependent Claim
15 words
supplying an embrittling agent of mercury or mercury amalgam to said portion of the workpiece,
Claim 11
Dependent Claim
15 words
supplying an embrittling agent of mercury or mercury amalgam to said portion of the workpiece,
Claim 12
Dependent Claim
15 words
SUPPLYING AN EMBRITTLING AGENT OF MERCURY OR MERCURY AMALGAM TO SAID PORTION OF THE WORKPIECE,
Claim 13
Dependent Claim
15 words
SUPPLYING AN EMBRITTLING AGENT OF MERCURY OR MERCURY AMALGAM TO SAID PORTION OF THE WORKPIECE,
Claim 14
Dependent Claim
11 words
PLACING A FIRST ELECTRODE IN SAID SOLUTION FORMING AN ANODE, AND
Claim 15
Dependent Claim
11 words
PLACING A FIRST ELECTRODE IN SAID SOLUTION FORMING AN ANODE, AND
Claim 16
Dependent Claim
11 words
placing a first electrode in said solution forming an anode, and
Claim 17
Dependent Claim
11 words
placing a first electrode in said solution forming an anode, and
Claim 18
Dependent Claim
10 words
applying a voltage potential across said anode and said workpiece.
Claim 19
Dependent Claim
10 words
applying a voltage potential across said anode and said workpiece.
Claim 20
Dependent Claim
10 words
APPLYING A VOLTAGE POTENTIAL ACROSS SAID ANODE AND SAID WORKPIECE.
Claim 21
Dependent Claim
10 words
APPLYING A VOLTAGE POTENTIAL ACROSS SAID ANODE AND SAID WORKPIECE.
Claim 22
Dependent Claim
9 words
said electrolytic solution comprises ethyl alcohol and perchloric acid.
Claim 23
Dependent Claim
9 words
said electrolytic solution comprises ethyl alcohol and perchloric acid.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |