US3040426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating miniature bellows by electroless chemical deposition
Assignee: PHILIP K HORRIGAN
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Filing: 1958-10-30
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Granted: 1962-06-26
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Expires: 1978-10-30
Abstract
No abstract record available.
Inventors
- 👤 Victor E Hamren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:24
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/52; G; G01; G01L; G01L7/00; G01L7/02; G01L7/06; G01L7/061; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981; Y10T29/49826; Y10T29/49877; Y10T29/4998; Y10T29/49988
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
204 words
A METHOD OF FABRICATING A MINIATURE FLUID PRESSURE SENSITIVE CONVOLUTED BELLOWS THROUGHOUT A RANGE OF SIZES EXTENDING DOWNWARDLY TO A LOWER LIMIT OF LESS THAN 1/8 INCH DIAMETER, THE STEPS OF SAID METHOD COMPRISING: PREPARING A FORM IN THE APPROXIMATE SHAPE OF THE INTERNAL WALL OF THE BELLOWS; THOROUGHLY CLEANING THE FORM; TREATING THE SURFACES OF THE FORM IN A SOLUTION OF NICKEL AND PLATING; IMMERSING THE FORM IN A SOLUTION OF NICKEL AND PHOSPHOROUS SALTS AND CHEMICALLY DEPOSITING ON THE FORM A SHELL HAVING THE FULL DIAMETER OF THE FINISHED ARTICLE AND CONSISTING OF A FILM OF UNIFORM THICKNESS IN THE RANGE OF .0002 AND .005 INCH AND CONTINUING SAID IMMERSION UNTIL THE SHELL ATTAINS SELF-SUSTAINING CONDITION; ETCHING THE FORM OUT OF THE SHELL AFTER THE SHELL HAS ATTAINED SAID SELF-SUSTAINING CONDITION; HEAT TREATING THE SHELL AT APPROXIMATELY 350* TO RELIEVE ALL INTERNAL STRESSES IN THE SHELL; CHEMICALLY CLEANING THE SHELL; TRIMMING THE SHELL; AND THEN SUBJECTING THE SHELL TO A SECOND HEAT TREATMENT AT APPROXIMATELY 425*F. WHILE DEFORMING THE SHELL ALONG ITS DEFLECTION AXIS TO A SELECTED SHAPE TO BE ESTABLISHED AS ITS FREE SHAPE, AND CONTINUING SAID SECOND HEAT TREATMENT UNTIL THE SHELL ASSUMES SAID DEFORMED SHAPE AS ITS FREE SHAPE.
Claim 2
Independent Claim
204 words
A METHOD OF FABRICATING A MINIATURE FLUID PRESSURE SENSITIVE CONVOLUTED BELLOWS THROUGHOUT A RANGE OF SIZES EXTENDING DOWNWARDLY TO A LOWER LIMIT OF LESS THAN 1/8 INCH DIAMETER, THE STEPS OF SAID METHOD COMPRISING: PREPARING A FORM IN THE APPROXIMATE SHAPE OF THE INTERNAL WALL OF THE BELLOWS; THOROUGHLY CLEANING THE FORM; TREATING THE SURFACES OF THE FORM IN A SOLUTION OF NICKEL AND PLATING; IMMERSING THE FORM IN A SOLUTION OF NICKEL AND PHOSPHOROUS SALTS AND CHEMICALLY DEPOSITING ON THE FORM A SHELL HAVING THE FULL DIAMETER OF THE FINISHED ARTICLE AND CONSISTING OF A FILM OF UNIFORM THICKNESS IN THE RANGE OF .0002 AND .005 INCH AND CONTINUING SAID IMMERSION UNTIL THE SHELL ATTAINS SELF-SUSTAINING CONDITION; ETCHING THE FORM OUT OF THE SHELL AFTER THE SHELL HAS ATTAINED SAID SELF-SUSTAINING CONDITION; HEAT TREATING THE SHELL AT APPROXIMATELY 350* TO RELIEVE ALL INTERNAL STRESSES IN THE SHELL; CHEMICALLY CLEANING THE SHELL; TRIMMING THE SHELL; AND THEN SUBJECTING THE SHELL TO A SECOND HEAT TREATMENT AT APPROXIMATELY 425*F. WHILE DEFORMING THE SHELL ALONG ITS DEFLECTION AXIS TO A SELECTED SHAPE TO BE ESTABLISHED AS ITS FREE SHAPE, AND CONTINUING SAID SECOND HEAT TREATMENT UNTIL THE SHELL ASSUMES SAID DEFORMED SHAPE AS ITS FREE SHAPE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-25 | 1965-12-25 | 1966-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-25 | 1969-12-25 | 1970-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-25 | 1973-12-25 | 1974-06-26 | $7700.00 | Window Closed / Lapsed |