Patent US4838087A successfully refreshed from Google Patents.
US4838087A
Expired / Lapsed
US
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Quad disk static pressure probe
Assignee: University of Colorado Foundation Inc
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Filing: 1988-06-23
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Granted: 1989-06-13
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Expires: 2008-06-23
Abstract
Abstract A quad disk static pressure probe apparatus (10) including: a hollow stem member (15) having a plurality of static pressure ports (16) disposed on its periphery; an apertured collar unit (14) surrounding the stem member (15) and being in open fluid communication with the static pressure ports (16); and, inner (21) and outer (18) pairs of disk members operatively secured to the stem member (15) above and below the location of the static pressure ports (16).
Inventors
- 👤 Randall T. Nishiyama
- 👤 Alfred J. Bedard, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:40
CPC Classifications
G; G01; G01P; G01P5/00; G01P5/14; G01P5/16; G01P5/165; G01L; G01L19/00; G01L19/0007
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
127 words
A static pressure probe apparatus comprising: an elongated hollow tubular stem member having a closed end and a plurality of static pressure ports disposed around the periphery of the tubular stem member; a generally cylindrical collar member provided with apertured end caps; wherein, each of the end caps are provided with an enlarged central aperture, that is dimensioned to sealingly engage the periphery of the tubular stem member at locations spaced from the static pressure ports in the tubular stem member; and, wherein each of the end caps are further provided with a plurality of pressure port apertures that are in open fluid communication with the static pressure ports in the tubular stem member; and, a plurality of disk members operatively associated with the tubular stem member.
Claim 2
Dependent Claim
127 words
A static pressure probe apparatus comprising: an elongated hollow tubular stem member having a closed end and a plurality of static pressure ports disposed around the periphery of the tubular stem member; a generally cylindrical collar member provided with apertured end caps; wherein, each of the end caps are provided with an enlarged central aperture, that is dimensioned to sealingly engage the periphery of the tubular stem member at locations spaced from the static pressure ports in the tubular stem member; and, wherein each of the end caps are further provided with a plurality of pressure port apertures that are in open fluid communication with the static pressure ports in the tubular stem member; and, a plurality of disk members operatively associated with the tubular stem member.
Claim 3
Dependent Claim
41 words
The apparatus as in claim 1 wherein said plurality of disk members comprise: at least one pair of disk members wherein the disk members are disposed above and below the location of the static pressure ports in the tubular stem member.
Claim 4
Dependent Claim
54 words
The apparatus as in claim 1 wherein said plurality of disk members comprise: a pair of outer disk members disposed above and below the cylindrical collar member; and, a pair of inner disk members disposed intermediate the outer disk members and located above and below the static pressure ports in the tubular stem member.
Claim 5
Dependent Claim
18 words
The apparatus as in claim 3 wherein the outer disk members are spaced from the inner disk members.
Claim 6
Dependent Claim
22 words
The apparatus as in claim 4 wherein the inner disk members are mounted flush with the end caps of the collar member.
Claim 7
Dependent Claim
23 words
The apparatus as in claim 3 wherein the outer disk members are approximately twice the width and thickness of the inner disk members.
Claim 8
Dependent Claim
16 words
The apparatus as in claim 6 wherein the outer disk members are provided with rounded edges.
Claim 9
Dependent Claim
16 words
The apparatus as in claim 6 wherein the inner disk members are provided with beveled edges.
Claim 10
Dependent Claim
21 words
The apparatus as in claim 8 wherein the beveled edges of the inner disk members face the adjacent outer disk members.
Claim 11
Dependent Claim
26 words
The apparatus as in claim 1 wherein the plurality of pressure port apertures are disposed perpendicular to the alignment of the plurality of static pressure ports.
Claim 12
Dependent Claim
20 words
The apparatus as in claim 1 wherein all of the structural components of the apparatus are fabricated from plastic material.
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) | 1992-06-12 | 1992-12-12 | 1993-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-12 | 1996-12-12 | 1997-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-12 | 2000-12-12 | 2001-06-13 | $7700.00 | Window Closed / Lapsed |