Patent US5153503A successfully refreshed from Google Patents.
Patent US4511598A successfully refreshed from Google Patents.
US4511598A
Expired / Lapsed
US
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Electromechanical transducer protecting
Assignee: Xerox Corp
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Filing: 1982-10-04
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Granted: 1985-04-16
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Expires: 2002-10-04
Abstract
Abstract An electromechanical transducer for an ink jet printer is vacuum impregnated with, e.g., epoxy or silicone materials. The impregnated transducer is less subject to chemical attack and to being shorted out by penetration by conductive inks.
Inventors
- 👤 Linda T. Creagh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:43
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/18; H; H10; H10N; H10N30/00; H10N30/80; H10N30/88; H10N30/883; B05D3/00; B05D3/04; B05D3/0493
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A method for overcoating and impregnating an electroded porous electromechanical transducer comprising the steps of: (a) immersing said electroded porous electromechanical transducer in a container of insulating hardenable liquid, (b) subjecting said container to a reduced pressure until at least a portion of gases entrained in the voids of said porous electromechanical transducer are removed, (c) increasing the pressure on said container, (d) removing said transducer from said liquid, (e) allowing excess liquid to drain off of said transducer, (f) allowing said hardenable liquid to harden until a protective coating is formed on said transducer
Claim 2
Independent Claim
95 words
A method for overcoating and impregnating an electroded porous electromechanical transducer comprising the steps of: (a) immersing said electroded porous electromechanical transducer in a container of insulating hardenable liquid, (b) subjecting said container to a reduced pressure until at least a portion of gases entrained in the voids of said porous electromechanical transducer are removed, (c) increasing the pressure on said container, (d) removing said transducer from said liquid, (e) allowing excess liquid to drain off of said transducer, (f) allowing said hardenable liquid to harden until a protective coating is formed on said transducer
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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) | 1988-04-15 | 1988-10-15 | 1989-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-15 | 1992-10-15 | 1993-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-15 | 1996-10-15 | 1997-04-16 | $7700.00 | Window Closed / Lapsed |