US4331890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Touch switch
Assignee: Janome Corp
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Filing: 1979-12-06
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Granted: 1982-05-25
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Expires: 1999-12-06
Abstract
Abstract A touch switch is composed of a first and a second touch electrodes which are adjacently arranged on a furnishing panel via an insulating substance and a circuit for processing an output therefrom and giving an effective output only when said electrodes are operated within a specific timing range.
Inventors
- 👤 Yoshimitsu Makino
- 👤 Akira Orii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:59
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/94; H03K17/96; H03K17/962
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
125 words
A touch switch system for a machinery having a drive motor, comprising a first touch electrode and a second touch electrode which are adjacently arranged on a furnishing panel of the machinery and operated one by one in a predetermined sequential order within a predetermined period of time difference to produce a first electric signal and a second electric signal; and electric circuit means including a first circuit associated with said first touch electrode and a second circuit associated with said second touch electrode for setting said predetermined period of time difference, said electric circuit means further including a circuit detecting said first and second electric signals produced in said predetermined period of time difference to produce an operating output for starting the drive motor.
Claim 2
Dependent Claim
125 words
A touch switch system for a machinery having a drive motor, comprising a first touch electrode and a second touch electrode which are adjacently arranged on a furnishing panel of the machinery and operated one by one in a predetermined sequential order within a predetermined period of time difference to produce a first electric signal and a second electric signal; and electric circuit means including a first circuit associated with said first touch electrode and a second circuit associated with said second touch electrode for setting said predetermined period of time difference, said electric circuit means further including a circuit detecting said first and second electric signals produced in said predetermined period of time difference to produce an operating output for starting the drive motor.
Claim 3
Dependent Claim
28 words
A touch system as defined in claim 1, further comprising means operated in association with one of the first and second touch electrodes to nullify said operating output.
Claim 4
Dependent Claim
33 words
A touch switch system as defined in claim 1, further comprising a separate touch switch operated in asociation with said circuit detecting said first and second electric signals to nullify the operating output.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-24 | 1985-11-23 | 1986-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-24 | 1989-11-23 | 1990-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-24 | 1993-11-23 | 1994-05-25 | $7700.00 | Window Closed / Lapsed |