US3825686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone handset vibrator
Assignee: Xerox Corp
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Filing: 1973-03-19
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Granted: 1974-07-23
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Expires: 1993-03-19
Abstract
Abstract Apparatus for loosening the carbon which becomes packed in the transmitter of a telephone handset remaining at rest in an acoustic coupler for extended periods of time. A weighted arm is thrown against the coupler boot by a solenoid push rod.
Inventors
- 👤 H Kramell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:23
CPC Classifications
H; H04; H04R; H04R21/00; H04R21/02; H04R21/021; H04M; H04M1/00; H04M1/02; H04M1/03
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
106 words
Apparatus for vibrating the transmitter of a telephone handset in contact with an acoustic coupler boot containing a transmitting transducer so as to loosen the carbon granules in said transmitter, said apparatus comprising a solenoid having a rod adapted to extend out from said solenoid when said solenoid is energized, and A pivotably mounted arm having one end free to move against said boot, said arm contacting said solenoid rod under gravitational influence, said arm and said solenoid being positioned so that said free end of said arm strikes said boot when said solenoid is energized and said arm then falls back on said extended rod.
Claim 2
Dependent Claim
106 words
Apparatus for vibrating the transmitter of a telephone handset in contact with an acoustic coupler boot containing a transmitting transducer so as to loosen the carbon granules in said transmitter, said apparatus comprising a solenoid having a rod adapted to extend out from said solenoid when said solenoid is energized, and A pivotably mounted arm having one end free to move against said boot, said arm contacting said solenoid rod under gravitational influence, said arm and said solenoid being positioned so that said free end of said arm strikes said boot when said solenoid is energized and said arm then falls back on said extended rod.
Claim 3
Dependent Claim
24 words
The apparatus of claim 1 wherein said arm is more heavily weighted at said free end than at the other end of said arm.
Claim 4
Dependent Claim
29 words
The apparatus of claim 2 wherein said solenoid rod contacts said arm at a point between said free end of said arm and the pivot point of said arm.
References Cited (Backward Citations)
US553843A
Cited
US3585302A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |