US3863196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustically activated proximity sensor switch
Assignee: MASSA DONALD P COHASSET
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Filing: 1972-01-31
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Granted: 1975-01-28
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Expires: 1992-01-31
Abstract
Abstract An ultrasonic system detects the presence of a target only after it has remained in a specified target zone for a predetermined period of time. Then after the recognized target is removed a function is performed. Thus, when the target is a person, a system may be automated to operate only after the person has remained fairly stationary within a defined zone of a prescribed period of time, but the system will not be operated responsive to a stream of pedestrian traffic passing through the zone.
Inventors
- 👤 Lewis M Hilles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:32
CPC Classifications
G; G01; G01S; G01S15/00; G01S15/02; G01S15/04; Y; Y10; Y10S; Y10S367/00; Y10S367/901
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
90 words
A sonically operated urinal flushing system comprising means for sonically detecting a sonic energy reflecting target in a predetermined zone, means for measuring a predetermined time period after said detection of said target in said zone, means for detecting the removal of said target from said zone, and means responsive jointly to said detection of the removal of said sonic energy reflecting target from said predetermined zone and to said time measuring means for flushing said system after said target has been in said zone for said predetermined time period.
Claim 2
Dependent Claim
90 words
A sonically operated urinal flushing system comprising means for sonically detecting a sonic energy reflecting target in a predetermined zone, means for measuring a predetermined time period after said detection of said target in said zone, means for detecting the removal of said target from said zone, and means responsive jointly to said detection of the removal of said sonic energy reflecting target from said predetermined zone and to said time measuring means for flushing said system after said target has been in said zone for said predetermined time period.
Claim 3
Dependent Claim
23 words
The system of claim 1 and means for inhibiting response to targets which are not in said zone for said predetermined time period.
Claim 4
Dependent Claim
27 words
The system of claim 2 wherein there are a plurality of said flushing systems, and common control means for selectively operating individual ones of said flushing systems.
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) | 1978-01-27 | 1978-07-29 | 1979-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-27 | 1982-07-29 | 1983-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-27 | 1986-07-29 | 1987-01-28 | $7700.00 | Window Closed / Lapsed |