Patent EP0242065A2 successfully refreshed from Google Patents.
Patent US4052162A successfully refreshed from Google Patents.
US4052162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monitoring device
Assignee: Imperial Chemical Industries Ltd
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Filing: 1976-03-31
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Granted: 1977-10-04
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Expires: 1996-03-31
Abstract
Abstract A monitor for fluids comprising a pump adapted to convey a fluid sample from the exterior of the monitor into contact with a portion of an indicator tape, a transport mechanism for advancement of the tape to expose a fresh portion of the tape to the fluid sample, and a single electric motor adapted to drive both the pump and the tape-transport mechanism.
Inventors
- 👤 John Robin Paul Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:17
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/22; G01N1/24
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
101 words
A monitor for fluids comprising: a casing; a porous indicator tape within the casing; a diaphragm pump within said casing, said pump having an inlet for drawing a fluid sample from outside the casing through a portion of the tape and into the pump and having a discharge outlet for discharging the fluid sample into the interior of the casing; a transport mechanism within the casing for advancing the tape so as to expose a fresh portion of the tape to the fluid sample; and a single electric motor within the casing for driving both the pump and the tape-transport mechanism.
Claim 2
Dependent Claim
101 words
A monitor for fluids comprising: a casing; a porous indicator tape within the casing; a diaphragm pump within said casing, said pump having an inlet for drawing a fluid sample from outside the casing through a portion of the tape and into the pump and having a discharge outlet for discharging the fluid sample into the interior of the casing; a transport mechanism within the casing for advancing the tape so as to expose a fresh portion of the tape to the fluid sample; and a single electric motor within the casing for driving both the pump and the tape-transport mechanism.
Claim 3
Dependent Claim
18 words
A monitor as in claim 1 including within the casing a battery as power source for said motor.
Claim 4
Dependent Claim
13 words
A monitor as in claim 1 wherein said transport advances the tape intermittently.
Claim 5
Dependent Claim
22 words
A monitor as in claim 1 which is a portable personal monitor for carrying in a pocket or clipping on to clothing.
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) | 1980-10-03 | 1981-04-04 | 1981-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-03 | 1985-04-04 | 1985-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-03 | 1989-04-04 | 1989-10-04 | $7700.00 | Window Closed / Lapsed |