Patent CH285180A successfully refreshed from Google Patents.
Patent US3311030A successfully refreshed from Google Patents.
US3311030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-aligning packing gland arrangements
Assignee: HALSTEAD METAL PRODUCTS Inc
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Filing: 1965-02-09
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Granted: 1967-03-28
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Expires: 1985-02-09
Abstract
No abstract record available.
Inventors
- 👤 Fred E Halstead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:47
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/08; F15B15/14; F15B15/1423; F15B15/1433; F15B15/1447; F15B15/1452; F16; F16J; F16J15/00; F16J15/16; F16J15/18; F16J15/187
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
IN A PISTON AND CYLINDER ARRANGEMENT, THE COMBINATION OF AN ELONGATED CYLINDER HOUSING, A SELF-ALIGNING PACKING GLAND CARRIED AT ONE END OF SAID CYLINDER HOUSING AND HAVING A SPHERICALLY-SHAPED SURFACE ROTATABLE WITHIN A COOPERATING STATIONARY SPHERICALLY-SHAPED RECESS CARRIED ON SAID ONE END OF SAID HOUSING, A LONGITUDINAL OPENING EXTENDING THROUGH SAID PACKING GLAND, A PISTON RECIPROCABLE WITHIN SAID CYLINDER HOUSING, A PISTON ROD CONNECTED TO THE PISTON AND EXTENDING THROUGH THE OPENING IN SAID PACKING GLAND, AND STATIONARY TRUNNION MEANS FOR PIVOTALLY SUPPORTING SAID CYLINDER HOUSING ALONG A PIVOTAL AXIS EXTENDING SUBSTANTIALLY NORMAL TO THE ANTICIPATED PLANE OF ANGULAR DISPLACEMENT OF SAID PISTON ROD AND SAID PACKING GLAND RELATIVE TO SAID CYLINDER HOUSING IN ORDER TO MINIMIZE BENDING STRESSES AT THE JUNCTION OF SAID PISTON ROD AND SAID PISTON.
Claim 2
Dependent Claim
129 words
IN A PISTON AND CYLINDER ARRANGEMENT, THE COMBINATION OF AN ELONGATED CYLINDER HOUSING, A SELF-ALIGNING PACKING GLAND CARRIED AT ONE END OF SAID CYLINDER HOUSING AND HAVING A SPHERICALLY-SHAPED SURFACE ROTATABLE WITHIN A COOPERATING STATIONARY SPHERICALLY-SHAPED RECESS CARRIED ON SAID ONE END OF SAID HOUSING, A LONGITUDINAL OPENING EXTENDING THROUGH SAID PACKING GLAND, A PISTON RECIPROCABLE WITHIN SAID CYLINDER HOUSING, A PISTON ROD CONNECTED TO THE PISTON AND EXTENDING THROUGH THE OPENING IN SAID PACKING GLAND, AND STATIONARY TRUNNION MEANS FOR PIVOTALLY SUPPORTING SAID CYLINDER HOUSING ALONG A PIVOTAL AXIS EXTENDING SUBSTANTIALLY NORMAL TO THE ANTICIPATED PLANE OF ANGULAR DISPLACEMENT OF SAID PISTON ROD AND SAID PACKING GLAND RELATIVE TO SAID CYLINDER HOUSING IN ORDER TO MINIMIZE BENDING STRESSES AT THE JUNCTION OF SAID PISTON ROD AND SAID PISTON.
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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) | 1970-03-27 | 1970-09-26 | 1971-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-27 | 1974-09-26 | 1975-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-27 | 1978-09-26 | 1979-03-28 | $7700.00 | Window Closed / Lapsed |