Patent US4839039B2 successfully refreshed from Google Patents.
US4839039B2
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Automatic flow-control device
Assignee: Recurrent Solutions LP
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Filing: 1986-02-28
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Granted: 1998-12-29
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Expires: 2006-02-28
Abstract
Abstract An add-on device (10) for converting a conventional manual faucet to an automatic faucet includes a body (12) that includes an adapter (14) by which the add-on device is mounted onto the outlet of the manual faucet. A conduit (32) provides a fluid path from the faucet outlet to a device outlet (18), and an electrically operable valve (30) is interposed in the conduit (32). A control circuit (26) operates an ultrasonic transducer (20) to sense objects in a target region near the device outlet 18, and it operates the valve (30) to permit water to flow out the device outlet (18) when the transducer detects a moving object in the target region.
Inventors
- 👤 Natan E Parsons
- 👤 Joel S Novak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:47
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/02; E03C1/05; E03C1/055; E03C1/057; A; A47; A47K; A47K5/00; A47K5/06; A47K5/12; A47K5/1217; G; G01; G01S; G01S15/00; G01S15/02; G01S15/50; G01S15/52; G01S15/523; G01S7/00; G01S7/52; G01S7/534; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8593; Y10T137/87265; Y10T137/87507; Y10T137/877; Y10T137/87877
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-12-28 | 2002-06-29 | 2002-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-12-28 | 2006-06-29 | 2006-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-12-28 | 2010-06-29 | 2010-12-29 | $7700.00 | Window Closed / Lapsed |