Patent US3573460A successfully refreshed from Google Patents.
US3573460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion chamber detector for submicron particles
Assignee: General Electric Co
•
Filing: 1966-09-12
•
Granted: 1971-04-06
•
Expires: 1986-09-12
Abstract
Abstract This invention relates to gas analyzing apparatus and more particularly to an improved ion chamber apparatus for detecting the presence of submicron size particles entrained in a gaseous carrier.
Inventors
- 👤 George F Skala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:55
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/62; G01N27/64; G01N27/66; G08; G08B; G08B17/00; G08B17/10; G08B17/11; G08B17/113; H; H01; H01J; H01J41/00; H01J41/02; H01J41/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
An apparatus for detecting submicron particulates in a gaseous carrier, said apparatus comprising; a. a mixing and gas ionizing section, which section includes means defining a delay volume for receiving the particulate bearing gas, and which also includes a source of radiation to effect ionization of the gaseous carrier, and b. a detector section operably joined to said section (a) to receive the ionized gas and entrained particulates therefrom, said detector section including spaced electrodes having an applied voltage and between which current flow occurs by means of the ionized gas to produce a variable signal the magnitude of which is proportional to the amount of entrained particulates wherein said mixing and gas ionizing section comprises an elongated body having a substantially greater longitudinal dimension than transverse dimension and where said source of radiation is substantially uniformly distributed over the length of said elongated body.
Claim 2
Independent Claim
145 words
An apparatus for detecting submicron particulates in a gaseous carrier, said apparatus comprising; a. a mixing and gas ionizing section, which section includes means defining a delay volume for receiving the particulate bearing gas, and which also includes a source of radiation to effect ionization of the gaseous carrier, and b. a detector section operably joined to said section (a) to receive the ionized gas and entrained particulates therefrom, said detector section including spaced electrodes having an applied voltage and between which current flow occurs by means of the ionized gas to produce a variable signal the magnitude of which is proportional to the amount of entrained particulates wherein said mixing and gas ionizing section comprises an elongated body having a substantially greater longitudinal dimension than transverse dimension and where said source of radiation is substantially uniformly distributed over the length of said elongated body.
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) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |