Portable sample cylinder with reduced seal permeability
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 5, 1992
Grant Date -
N/A
app pub date -
Sep 21, 1990
filing date -
Sep 21, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A portable sample cylinder assembly is provided for transporting a fluid. The sample cylinder assembly includes a housing defining in part an internal fluid chamber, a first end cap at one end of the housing, and a second end cap at an opposing end of the housing. At least one of the end caps includes a stop surface and an annular groove. An elastomeric seal is positioned within the groove for static sealing between the end cap and the housing. The end of the housing includes an end surface for metal-to-metal engagement with the stop surface, and a compressional surface for applying a compressional force to the elastomeric seal in response to axial movement of the end surface toward the stop surface. A plurality of connector rods may be used to controllably move the end cap axially toward the housing and thereby compress the elastomeric seal to reduce the permeability of the seal. The elastomeric seal preferably has a circular cross-sectional configuration prior to compressional force being applied to the seal, and a base portion of the groove opposite the compressional surface with respect to the elastomeric seal as a semi-circular cross-sectional configuration.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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PGI INTERNATIONAL LTD | 16101 VALLEN DRIVE HOUSTON TX 77041 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Nimberger, Spencer M | Houston, TX | 101 | 1329 |
# of filed Patents : 101 Total Citations : 1329 | |||
Ward, Robert L | Missouri City, TX | 17 | 156 |
# of filed Patents : 17 Total Citations : 156 |
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Patent Citation Ranking
- 2 Citation Count
- G01N Class
- 0 % this patent is cited more than
- 33 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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