Patent US3030753A successfully refreshed from Google Patents.
US3030753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rapper
Assignee: Beazer East Inc
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Filing: 1958-04-10
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Granted: 1962-04-24
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Expires: 1978-04-10
Abstract
No abstract record available.
Inventors
- 👤 John W Pennington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:38
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/74; B03C3/76; B03C3/766
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
IN AN ELECTROSTATIC PRECIPITATOR FOR REMOVING PARTICLES FROM A GAS STREAM HAVING ELEVATED AMBIENT TEMPERATURES, A CASING AND A PLURALITY OF ELECTRODES SUSPENDED WITHIN SAID CASING; THE IMPROVEMENT COMPRISING MEANS FOR VIBRATING SAID ELECTRODES, SAID MEANS BEING A RESILIENTLY-MOUNTED VIBRATOR INCLUDING A CYLINDER HAVING END-PLATE CLOSURES, A HAMMER MOUNTED FOR RECIPROCATION WITHIN SAID CYLINDER BETWEEN SAID END-PLATE CLOSURES AND HAVING TWO SPACED RAISED BEARING LANDS FORMED THEREON, SAID LANDS HAVING THREADLIKE GROOVES FORMED IN THE OUTER SURFACE THEREOF, EACH OF SAID BEARING LANDS HAVING A SINGLE LAYER OF FIBER-FILLED POLYTETRAFLUOROETHYLENE TAPE BONDED TO SAID THREADED OUTER SURFACE FOR FORMING A LUBRICANTFREE BEARING SURFACE, SAID LAYER HAVING A THICKNESS BETWEEN ABOUT 3/32 AND ABOUT 1/4 OF AN INCH AND MEANS FOR CAUSING SAID HAMMER TO RECIPROCATE, SAID HAMMER STRIKING SAID END-PLATE CLOSURES WITH SUBSTANTIALLY EQUAL IMPACT.
Claim 2
Dependent Claim
135 words
IN AN ELECTROSTATIC PRECIPITATOR FOR REMOVING PARTICLES FROM A GAS STREAM HAVING ELEVATED AMBIENT TEMPERATURES, A CASING AND A PLURALITY OF ELECTRODES SUSPENDED WITHIN SAID CASING; THE IMPROVEMENT COMPRISING MEANS FOR VIBRATING SAID ELECTRODES, SAID MEANS BEING A RESILIENTLY-MOUNTED VIBRATOR INCLUDING A CYLINDER HAVING END-PLATE CLOSURES, A HAMMER MOUNTED FOR RECIPROCATION WITHIN SAID CYLINDER BETWEEN SAID END-PLATE CLOSURES AND HAVING TWO SPACED RAISED BEARING LANDS FORMED THEREON, SAID LANDS HAVING THREADLIKE GROOVES FORMED IN THE OUTER SURFACE THEREOF, EACH OF SAID BEARING LANDS HAVING A SINGLE LAYER OF FIBER-FILLED POLYTETRAFLUOROETHYLENE TAPE BONDED TO SAID THREADED OUTER SURFACE FOR FORMING A LUBRICANTFREE BEARING SURFACE, SAID LAYER HAVING A THICKNESS BETWEEN ABOUT 3/32 AND ABOUT 1/4 OF AN INCH AND MEANS FOR CAUSING SAID HAMMER TO RECIPROCATE, SAID HAMMER STRIKING SAID END-PLATE CLOSURES WITH SUBSTANTIALLY EQUAL IMPACT.
References Cited (Backward Citations)
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US2817562A
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US2777535A
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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) | 1965-04-23 | 1965-10-23 | 1966-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-23 | 1969-10-23 | 1970-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-23 | 1973-10-23 | 1974-04-24 | $7700.00 | Window Closed / Lapsed |