US3886800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas sampling device
Assignee: Individual
•
Filing: 1973-10-15
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Granted: 1975-06-03
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Expires: 1993-10-15
Abstract
Abstract Sealed crushable tube includes a puncturable segment and a removable, snugly fitted internal piston and a reasonable closure for an opening through which the piston is removable from the tube. An uncontaminated gas sample is taken by removing the piston from the tube in the atmosphere, exercizing the piston to secure a thoroughly mixed and typical sample to be sampled, and resealing the opening through which the piston is removed. The closed tube may then be transferred long distances by mail or parcel service to a gas analysis device where the gas is transferred to the device by a tubular member which penetrates the puncturable segment and delivers the sampled gas to the gas analysis apparatus with a minimum of contamination. Various closure means and auxiliary features are also disclosed. Generally, the device is constructed of a metal or some other material inert and non-absorbent with respect to the gas to be treated. An important feature of the system is a gas tight fixed seal, and the ability to urge the gas out of the container by crushing the container thus eliminating sliding seals which leak.
Inventors
- 👤 John R Boehringer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:25
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/22; G01N1/24
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
58 words
Gas sampling device comprising a sealed crushable tube having a puncturable segment therein, an opening closed by a resealable, openable closure and a piston snugly fitting within said tube and removable through said opening, said tube, said closure, and said piston all being composed of a material inert and non-absorbent with respect to any gases to be tested.
Claim 2
Dependent Claim
58 words
Gas sampling device comprising a sealed crushable tube having a puncturable segment therein, an opening closed by a resealable, openable closure and a piston snugly fitting within said tube and removable through said opening, said tube, said closure, and said piston all being composed of a material inert and non-absorbent with respect to any gases to be tested.
Claim 3
Dependent Claim
58 words
Gas sampling device comprising a sealed crushable tube having a puncturable segment therein, an opening closed by a resealable, openable closure and a piston snugly fitting within said tube and removable through said opening, said tube, said closure, and said piston all being composed of a material inert and non-absorbent with respect to any gases to be tested.
Claim 4
Dependent Claim
58 words
Gas sampling device comprising a sealed crushable tube having a puncturable segment therein, an opening closed by a resealable, openable closure and a piston snugly fitting within said tube and removable through said opening, said tube, said closure, and said piston all being composed of a material inert and non-absorbent with respect to any gases to be tested.
Claim 5
Dependent Claim
14 words
Gas sampling device, as recited in claim 1, wherein said material is a metal.
Claim 6
Dependent Claim
27 words
Gas sampling device, as recited in claim 1, wherein said material is a metal selected from the group consisting of aluminum, zinc, lead, tin, and tin-lead alloys.
Claim 7
Dependent Claim
55 words
Gas sampling device, as recited in claim 1, wherein said opening and closure consists of an opening in said tube surrounded by a means for retaining said closure in firm contact therewith, said closure abutting said opening with a metallic seal and being retained thereagainst by means mating with said retaining means surrounding said opening.
Claim 8
Dependent Claim
59 words
Gas sampling device, as recited in claim 4, wherein said retaining means consists of a deformable segment extending circumferentially about said tube and a mating non-deformable segment on said closure, said closure being adapted to engage said deformable segment in a manner to cause deformation thereof with a resultant gripping and sealing effect between said tube and said closure.
Claim 9
Dependent Claim
39 words
Gas sampling device, as recited in claim 4, wherein said retaining means consists of threaded members adapted to mate with correspondingly threaded members attached to said clOsure, said members including posts extending between said retaining means and said closure.
Claim 10
Dependent Claim
37 words
Gas sampling means, as recited in claim 1, wherein said tube includes a dimple projecting inwardly in said tube and adapted to be bent outward in response to a decrease in the ambient pressure surrounding said tube.
Claim 11
Dependent Claim
60 words
Gas sampling device, as recited in claim 1, wherein said puncturable segment is surrounded by a projection in said tube, said projection being adapted to receive and retain, in sealed engagement, a means including a pointed tubular member adapted to puncture said segment and to protrude into said tube through said punctured segment and to withdraw a gas sample therefrom.
Claim 12
Dependent Claim
73 words
Gas sampling device, as recited in claim 8, further including a gas sample withdrawing means adapted first to engage and to be retained in sealed engagement with said puncturable segment-surrounding projection, and then to flush inert gas through the closed space between said segment and said sample withdrawing means, and finally to puncture said segment with a pointed tubular member and to withdraw a gas sample from said tube through said tubular member.
Claim 13
Dependent Claim
20 words
Gas sampling device, as recited in claim 9, wherein said tubular member is connected directly to a gas analysis means.
Claim 14
Dependent Claim
70 words
Gas sampling device comprising a sealed crushable tube having a puncturable segment therein and an opening closed by an openable and sealable closure, said tube and said closure being composed of a material inert and non absorbent with respect to any gases to be tested, wherein the space within said tube is occupied by an inert solid material adapted to be removed through said opening upon removal of said closure.
Claim 15
Dependent Claim
70 words
Gas sampling device comprising a sealed crushable tube having a puncturable segment therein and an opening closed by an openable and sealable closure, said tube and said closure being composed of a material inert and non absorbent with respect to any gases to be tested, wherein the space within said tube is occupied by an inert solid material adapted to be removed through said opening upon removal of said closure.
Claim 16
Dependent Claim
16 words
A device as recited in claim 11 wherein said inert solid material is in particulate form.
Claim 17
Dependent Claim
77 words
Gas sampling device comprising a sealed crushable tube having a puncturable segment therein and an opening closed by an openable and sealable closure, said tube and said closure being composed of a material inert and non-absorbent with respect to any gasses to be tested, wherein the surface of said tube at said opening defines at least on preformed ridge, and said closure includes a sheet of inert, malleable material to fit in sealable registry with said ridge.
Claim 18
Dependent Claim
77 words
Gas sampling device comprising a sealed crushable tube having a puncturable segment therein and an opening closed by an openable and sealable closure, said tube and said closure being composed of a material inert and non-absorbent with respect to any gasses to be tested, wherein the surface of said tube at said opening defines at least on preformed ridge, and said closure includes a sheet of inert, malleable material to fit in sealable registry with said ridge.
Claim 19
Dependent Claim
35 words
Gas sampling device, as recited in claim 13, wherein said sheet of inert, malleable material is lead foil secured to said closure, said ridges penetrating said foil as said closure is secured to said tube.
References Cited (Backward Citations)
US1128669A
Cited
US3618393A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |