US4375066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
IJP Drop modulator
Assignee: Bantec Inc
•
Filing: 1981-03-10
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Granted: 1983-02-22
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Expires: 2001-03-10
Abstract
Abstract An adjustable frequency Ink Jet Gun utilizing a variable ink chamber and replaceable orifice may be used in a wide variety of applications.
Inventors
- 👤 Richard D. Herd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:03
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/015; B41J2/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
46 words
An adjustable frequency ink jet printer modulator comprising; a piezoelectric crystal, a front plate and a rear plate, said crystal, front plate and rear plate forming an ink cavity, and an adjustable plunger extending through said rear plate for varying the size of said ink cavity.
Claim 2
Dependent Claim
46 words
An adjustable frequency ink jet printer modulator comprising; a piezoelectric crystal, a front plate and a rear plate, said crystal, front plate and rear plate forming an ink cavity, and an adjustable plunger extending through said rear plate for varying the size of said ink cavity.
Claim 3
Dependent Claim
29 words
The ink modulator according to claim 1 wherein said plunger is generally tubular in shape has an opening extending therethrough through which ink is supplied to said ink cavity.
Claim 4
Dependent Claim
29 words
The ink modulator according to claim 1 wherein said front plate has provision for an ink nozzle therein and said front plate is removably mounted to facilitate changing nozzles.
Claim 5
Dependent Claim
23 words
The ink modulator according to claim 1 wherein said front plate and plunger have o-rings thereon to form a seal with said crystal.
Claim 6
Dependent Claim
26 words
The ink modulator according to claim 1 wherein said crystal resides in a housing and said front and back plates enclose the crystal within said housing.
Claim 7
Dependent Claim
49 words
An ink jet modulator comprising; enclosing means including a piezoelectric crystal providing an ink cavity, replaceable nozzle means forming a part of said enclosing means, and a threaded adjustable means at one end of said cavity providing means for changing the size and frequency response of said ink cavity.
Claim 8
Dependent Claim
49 words
An ink jet modulator comprising; enclosing means including a piezoelectric crystal providing an ink cavity, replaceable nozzle means forming a part of said enclosing means, and a threaded adjustable means at one end of said cavity providing means for changing the size and frequency response of said ink cavity.
References Cited (Backward Citations)
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US4007464A
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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) | 1986-02-21 | 1986-08-23 | 1987-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-21 | 1990-08-23 | 1991-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-21 | 1994-08-23 | 1995-02-22 | $7700.00 | Window Closed / Lapsed |