Patent US3372452A successfully refreshed from Google Patents.
US3372452A
Expired / Lapsed
US
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Securing of sleeves in cylinder bores
Assignee: Minister of Technology
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Filing: 1965-09-15
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Granted: 1968-03-12
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Expires: 1985-09-15
Abstract
No abstract record available.
Inventors
- 👤 Firth Donald
- 👤 Hancock Harvey Yorke
- 👤 Balfour William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:47
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/02; F02F1/10; F02F1/16; B; B23; B23P; B23P11/00; B23P11/005; F16; F16J; F16J10/00; F16J10/02; F16J10/04; F02B; F02B3/00; F02B3/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/4927; Y10T29/49272; Y10T29/49826; Y10T29/49863; Y10T29/49865; Y10T29/49908; Y10T29/49915; Y10T29/4992; Y10T29/49938; Y10T29/4994
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
104 words
THE METHOD OF SHRINK FITTING A SLEEVE INTO A CYLINDER BORE WHEREIN THE SAID IS FIRST RELIEVED AT ITS INNER END BY AN ANNULAR RECESS AND THE SLEEVE IS INITIALLY FORMED OF A LENGTH TO OVERLAP THE RECESS WITH SLIGHT POSITIVE CLEARANCE FROM THE INNER END WALL OF THE BORE, THE METHOD FURTHER COMPRISING THE STEPS OF INWARDLY DEFORMING THE RECESS-OVERLAPPING END OF THE SLEEVE, SHRINK FITTING THE SLEEVE INTO THE BORE, AND PASSING THROUGH THE SHRUNK-IN SLEEVE A CYLINDRICAL PUNCH WHICH IS A CLOSE SLIDING FIT IN THE MOUTH OF THE SLEEVE SO AS TO EXPAND THE DEFORMED PORTION INTO THE ANNULAR RECESS.
References Cited (Backward Citations)
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Cited
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US2903309A
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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) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |