US3437568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for determining and controlling stress in an electroformed part
Assignee: Electro Optical Systems Inc
•
Filing: 1966-07-18
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Granted: 1969-04-08
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Expires: 1986-07-18
Abstract
No abstract record available.
Inventors
- 👤 Detlev E Hasselmann
- 👤 Robert G Tellkamp
- 👤 Gary L Hetherington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:11
CPC Classifications
C; C25; C25D; C25D21/00; C25D1/00; C25D1/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
79 words
APPARATUS FOR DETERMINING THE INTERNAL STRESS PRODUCED IN A PART BEING ELECTROFORMED, SAID APPARATUS COMPRISING: A TEST MEMBER HAVING A PLATING-RECEIVING AREA; SUPPORT MEANS FOR HOLDING SAID TEST MEMBER UNDER FORCE IN ONE LINEAR DIRECTION; MEANS FOR OPERATIVELY CONNECTING SAID TEST MEMBER TO THE MEANS THAT ELECTROLYTICALLY FORM THE PART TO FORM AN ELECTRODEPOSITED PLATING ON SAID AREA OF SAID TEST MEMBER; AND SENSING MEANS FOR SENSING CHANGES IN THE FORCE ON SAID TEST MEMBER IN SAID LINEAR DIRECTION.
Claim 2
Dependent Claim
79 words
APPARATUS FOR DETERMINING THE INTERNAL STRESS PRODUCED IN A PART BEING ELECTROFORMED, SAID APPARATUS COMPRISING: A TEST MEMBER HAVING A PLATING-RECEIVING AREA; SUPPORT MEANS FOR HOLDING SAID TEST MEMBER UNDER FORCE IN ONE LINEAR DIRECTION; MEANS FOR OPERATIVELY CONNECTING SAID TEST MEMBER TO THE MEANS THAT ELECTROLYTICALLY FORM THE PART TO FORM AN ELECTRODEPOSITED PLATING ON SAID AREA OF SAID TEST MEMBER; AND SENSING MEANS FOR SENSING CHANGES IN THE FORCE ON SAID TEST MEMBER IN SAID LINEAR DIRECTION.
Claim 3
Independent Claim
67 words
A METHOD FOR DETERMINING THE INTERNAL STRESS IN AN ELECTROFORMED PART, SAID METHOD COMPRISING THE STEPS OF PLACING A TEST MEMBER UNDER FORCE IN ONE LINEAR DIRECTION; SUBJECTING THE TEST MEMBER TO ELECTROLYTIC CONDITIONS DIRECTLY COMPARABLE TO THOSE UNDER WHICH THE PART IS BEING ELECTROFORMED TO ELECTRODEPOSIT A COATING OF METAL ON THE TEST MEMBER; SENSING CHANGES IN FORCE IN SAID LINEAR DIRECTION ON THE TEST MEMBER.
Claim 4
Independent Claim
67 words
A METHOD FOR DETERMINING THE INTERNAL STRESS IN AN ELECTROFORMED PART, SAID METHOD COMPRISING THE STEPS OF PLACING A TEST MEMBER UNDER FORCE IN ONE LINEAR DIRECTION; SUBJECTING THE TEST MEMBER TO ELECTROLYTIC CONDITIONS DIRECTLY COMPARABLE TO THOSE UNDER WHICH THE PART IS BEING ELECTROFORMED TO ELECTRODEPOSIT A COATING OF METAL ON THE TEST MEMBER; SENSING CHANGES IN FORCE IN SAID LINEAR DIRECTION ON THE TEST MEMBER.
References Cited (Backward Citations)
US2568713A
Cited
US2829517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |