US3590397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic flushing device for toilet facilities
Assignee: Omron Corp
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Filing: 1969-06-20
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Granted: 1971-07-06
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Expires: 1989-06-20
Abstract
Abstract An automatic flushing device for a toilet, wherein the flushing of water is controlled by a switch so disposed as to be actuated by a lid mounted on the toilet bowl so that when the lid is opened for use of the toilet, a control circuit opens a flush valve for a predetermined period of time to flush the toilet prior to use, and when the lid is closed after use, the control circuit again opens the valve for a predetermined period of time to flush the toilet again.
Inventors
- 👤 Hiroo Akamatsu
- 👤 Saburo Takechi
- 👤 Masuo Ichimori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:04
CPC Classifications
E; E03; E03D; E03D5/00; E03D5/02; E03D5/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
122 words
An automatic flushing device for a toilet having a bowl, a lid hinged to the bowl for selective opening and closing, means for supporting the lid when open, and means for flushing water into the bowl, comprising: A. a proximity switch which is mounted on the supporting means, said proximity switch being normally restored and adapted to be actuated when a metallic object is brought adjacent thereto; B. a metallic piece located on the lid and positioned to actuate said proximity switch when the lid is open; C. a control circuit connected to said proximity switch which operates the flushing means of the toilet for a predetermined period of time after the lid is closed and said proximity switch has been restored.
Claim 2
Dependent Claim
122 words
An automatic flushing device for a toilet having a bowl, a lid hinged to the bowl for selective opening and closing, means for supporting the lid when open, and means for flushing water into the bowl, comprising: A. a proximity switch which is mounted on the supporting means, said proximity switch being normally restored and adapted to be actuated when a metallic object is brought adjacent thereto; B. a metallic piece located on the lid and positioned to actuate said proximity switch when the lid is open; C. a control circuit connected to said proximity switch which operates the flushing means of the toilet for a predetermined period of time after the lid is closed and said proximity switch has been restored.
Claim 3
Dependent Claim
38 words
An automatic flushing device as recited in claim 1, wherein said control circuit also includes means which operates the flushing means for a predetermined period of time after the lid is opened and saId proximity switch is actuated.
Claim 4
Dependent Claim
105 words
An automatic flushing device as recited in claim 2, wherein said control circuit comprises: A. means providing a first pulse when said proximity switch is actuated and a second pulse when said proximity switch is restored; B. means furnishing a first control signal having a duration equal to that of said first predetermined time period in response to said first pulse, C. means furnishing a second control signal having a duration equal to that of said second predetermined time period in response to said second pulse, and D. means actuating the flushing means in response to either of said first or said second control signals.
Claim 5
Dependent Claim
34 words
An automatic flushing device as recited in claim 3 wherein said first and second pulse providing means comprises a differentiator, and said first and second control signal furnishing means each comprises a monostable multivibrator.
Claim 6
Dependent Claim
27 words
An automatic flushing device as recited in claim 2 wherein said proximity switch comprises a magnetically actuated reed switch, and said metallic piece comprises a permanent magnet.
Claim 7
Dependent Claim
27 words
An automatic flushing device as recited in claim 1, wherein said proximity switch comprises a magnetically actuated reed switch, and said metallic piece comprises a permanent magnet.
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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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |