US3678759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotating cup particle sizing sampling apparatus
Assignee: Calspan Corp
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Filing: 1971-01-22
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Granted: 1972-07-25
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Expires: 1991-01-22
Abstract
Abstract A pair of rotating arms having a plurality of aerosol particle collection cups of various entrance areas fixed to the leading edges of the arms at various radially spaced points, the cups can be interchanged to vary the speed and collection efficiencies whereby particle size distributions can be calculated according to impaction theories.
Inventors
- 👤 Richard F Schneeberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:24
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/22; G01N1/2202; G01N2001/222; G01N2001/2223
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
72 words
Apparatus of the character described, comprising; a. at least one arm rotatable about an axis b. a plurality of aerosol collection means comprising a plurality of cups located at various radial distances away from the rotational axis of said arm, c. means mounting said cups on said arm for rotation therewith, and d. said cups are of varying entrance areas decreasing from a maximum nearest said axis to a minimum furthest therefrom.
Claim 2
Dependent Claim
72 words
Apparatus of the character described, comprising; a. at least one arm rotatable about an axis b. a plurality of aerosol collection means comprising a plurality of cups located at various radial distances away from the rotational axis of said arm, c. means mounting said cups on said arm for rotation therewith, and d. said cups are of varying entrance areas decreasing from a maximum nearest said axis to a minimum furthest therefrom.
Claim 3
Dependent Claim
30 words
The apparatus according to claim 1, wherein; e. said means for mounting are similar for each of said cups whereby the position of each of said cups can be interchanged.
Claim 4
Dependent Claim
30 words
The apparatus according to claim 2, wherein; f. said arm has a leading edge and a trailing edge, and g. said cups face in the direction of said leading edge.
Claim 5
Dependent Claim
15 words
The apparatus according to claim 3, further comprising; h. motor means for rotating said arm.
Claim 6
Dependent Claim
16 words
The apparatus according to claim 3, wherein; h. said arm is of airfoil shape in section.
Claim 7
Dependent Claim
16 words
The apparatus according to claim 3, wherein; h. said arm is of cylindrical shape in section.
Claim 8
Dependent Claim
24 words
The apparatus according to claim 6, wherein; i. said mounting means comprises pins and bores on one of each of said cups and arm.
Claim 9
Dependent Claim
76 words
Apparatus of the character described comprising; a. a pair of arms rotatable about an axis, b. a plurality of aerosol collection means comprising cups, c. means for mounting said cups to each of said arms for rotation therewith, d. said cups are located at various radial distances away from the rotational axis of said arms, and e. said cups are of varying entrance areas decreasing from a maximum nearest said axis to a minimum furthest therefrom.
Claim 10
Dependent Claim
76 words
Apparatus of the character described comprising; a. a pair of arms rotatable about an axis, b. a plurality of aerosol collection means comprising cups, c. means for mounting said cups to each of said arms for rotation therewith, d. said cups are located at various radial distances away from the rotational axis of said arms, and e. said cups are of varying entrance areas decreasing from a maximum nearest said axis to a minimum furthest therefrom.
Claim 11
Dependent Claim
30 words
The apparatus according to claim 8, wherein; f. said means for mounting are similar for each of said cups whereby the position of each of said cups can be interchanged.
Claim 12
Dependent Claim
32 words
The apparatus according to claim 9, wherein; g. each of said arms have a leading edge and a trailing edge, and h. said cups face in the direction of said leading edge.
Claim 13
Dependent Claim
15 words
The apparatus according to claim 10, further comprising; i. motor means for rotating said arms.
Claim 14
Dependent Claim
16 words
The apparatus according to claim 10, wherein; i. said arms arE of airfoil shape in section.
Claim 15
Dependent Claim
16 words
The apparatus according to claim 12, wherein; i. said arms are of cylindrical shape in section.
Claim 16
Dependent Claim
24 words
The apparatus according to claim 13, wherein; j. said mounting means comprises pins and bores on one of each of said cups and arms.
Claim 17
Dependent Claim
28 words
The apparatus according to claim 10, wherein; i. each of said arms are inclined such that the entrance to each of said cups lies in a common plane.
References Cited (Backward Citations)
DE1013098B
Cited
SU134890A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |