Patent US3589170A successfully refreshed from Google Patents.
US3589170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromatograph detector cell
Assignee: Keithley Instruments LLC
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Filing: 1968-04-26
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Granted: 1971-06-29
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Expires: 1988-04-26
Abstract
Abstract A chromatograph column of compacted adsorbent material is connected to a chromatograph detector cell for detecting the passages of unknowns. The detector cell has temperature sensors disposed in individual members, e.g., block, which have aligned fluid passageways therein for conducting liquid from the column through the cell. A compressible seal member is disposed between the blocks and has an opening through which the liquid flows from one block to the other. The blocks are pressed together to seal against the sealing member. The temperature sensor in each block is sealed to prevent leakage by a compressible sleeve which seals against the sensor and the block when forced inwardly. Inlet and outlet conduits to the cell are constructed from a compressible material and have flanged ends which are sealed against the blocks by conduit couplings threadably inserted into the central bores of the fasteners.
Inventors
- 👤 Julius Praglin
- 👤 Gary E Angeline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:04
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/62
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
441 words
A chromatograph detector cell for detecting the passage of unknown fluids from a chromatograph column, said cell comprising means defining a fluid passageway chemically inert throughout its entire length to the fluids flowing therethrough and having first and second portions with the second portion adapted to have a material compacted therein, a first temperature sensor associated with the first portion of the fluid passageway in a chemically manner and adapted to sense the temperature therein, and a second temperature sensor associated with the second portion of the fluid passageway in a chemically inert manner adapted to sense the temperature therein, said means defining the chemically inert fluid passageway comprising a first substantially deformationresistant and chemically inert member having the first portion of the fluid passageway formed therethrough, a second substantially deformation-resistant and chemically inert member having the second portion of the fluid passageway formed therethrough, said first and second members each having an opening extending from said fluid passageway outwardly to an external side of said member, said first and second temperature sensors being disposed in the openings in said first and second members respectively and each comprising a temperature sensing element and a chemically inert and thermally conductive envelope for said temperature sensing element, first and second chemically inert sealing members disposed on said first and second temperature sensor envelopes respectively for preventing leakage of fluid from the fluid passageways through the openings in said first and second members, first and second force-exerting members disposed respectively on said first and second temperature sensor envelopes outwardly of said sealing members and movable inwardly in the opening to move said sealing member inwardly toward the fluid passageway, the openings formed in said first and second members being defined by wall means having a reduced portion inwardly Of said sealing members and into which said sealing members are adapted to be forced by said force-exerting members to constrict said sealing members about said temperature sensor envelopes in fluid-sealing relation thereto and said sealing members having an outer portion expanded by said force-exerting members in fluid-sealing relation against the wall means defining said openings in said first and second members, a compressible and chemically inert seal member with a fluid passageway formed therethrough being disposed with the fluid passageway thereof in fluid communication with the fluid passageways of said first and second members, said compressible seal member being adapted to be deformed in fluid-sealing relation to the first and second members, and means adapted to press said first and second members against said compressible seal member to deform said seal member in fluid-sealing relation with the fluid passageways of said first and second members.
Claim 2
Dependent Claim
441 words
A chromatograph detector cell for detecting the passage of unknown fluids from a chromatograph column, said cell comprising means defining a fluid passageway chemically inert throughout its entire length to the fluids flowing therethrough and having first and second portions with the second portion adapted to have a material compacted therein, a first temperature sensor associated with the first portion of the fluid passageway in a chemically manner and adapted to sense the temperature therein, and a second temperature sensor associated with the second portion of the fluid passageway in a chemically inert manner adapted to sense the temperature therein, said means defining the chemically inert fluid passageway comprising a first substantially deformationresistant and chemically inert member having the first portion of the fluid passageway formed therethrough, a second substantially deformation-resistant and chemically inert member having the second portion of the fluid passageway formed therethrough, said first and second members each having an opening extending from said fluid passageway outwardly to an external side of said member, said first and second temperature sensors being disposed in the openings in said first and second members respectively and each comprising a temperature sensing element and a chemically inert and thermally conductive envelope for said temperature sensing element, first and second chemically inert sealing members disposed on said first and second temperature sensor envelopes respectively for preventing leakage of fluid from the fluid passageways through the openings in said first and second members, first and second force-exerting members disposed respectively on said first and second temperature sensor envelopes outwardly of said sealing members and movable inwardly in the opening to move said sealing member inwardly toward the fluid passageway, the openings formed in said first and second members being defined by wall means having a reduced portion inwardly Of said sealing members and into which said sealing members are adapted to be forced by said force-exerting members to constrict said sealing members about said temperature sensor envelopes in fluid-sealing relation thereto and said sealing members having an outer portion expanded by said force-exerting members in fluid-sealing relation against the wall means defining said openings in said first and second members, a compressible and chemically inert seal member with a fluid passageway formed therethrough being disposed with the fluid passageway thereof in fluid communication with the fluid passageways of said first and second members, said compressible seal member being adapted to be deformed in fluid-sealing relation to the first and second members, and means adapted to press said first and second members against said compressible seal member to deform said seal member in fluid-sealing relation with the fluid passageways of said first and second members.
Claim 3
Dependent Claim
103 words
In a chromatograph detector cell for detecting fluids according to claim 1, further comprising a conduit in fluid communication with the fluid passageway of one of said members and chemically inert to the fluids flowing therethrough, said conduit having a compressible flange formed thereon and in engagement with the surface of said member surrounding the fluid passageway formed therein, and means adapted to press the compressible flange of said conduit against the surface of said member to deform the flange in fluid-sealing relation to said member to prevent leakage of the fluid passing between said conduit and the fluid passageway of said member.
Claim 4
Dependent Claim
135 words
In a chromotograph detector cell for detecting fluids according to claim 2, said seal member having external edges and the fluid passageway formed therethrough with external openings in spaced relation to an adjacent edge of said seal member, said first and second members each having a shoulder formed thereon adjacent to an external opening of the fluid passageway formed therethrough, said shoulders on said first and second members each being adapted to engage an edge of said seal member adjacent an external opening of the fluid passageway formed therethrough, and said shoulders of said first and second members each being formed in spaced relation to the external opening of the fluid passageway of said member to effect alignment thereof with the opening of the fluid passageway of said seal member and establish fluid communication therebetween.
Claim 5
Dependent Claim
171 words
In a chromatograph detector cell for detecting fluids according to claim 3, further comprising a holder having first and second laterally offset slots formed therein and adapted to have said first and second members disposed respectively therein, said first and second slots formed in said holder having overlapping inner portions opening into each other to enable the fluid passageways of said first and second members to be in fluid communication with each other, said holder having first and second spaced shoulders formed therein transversely to said slots and adjacent the overlapping portions of said first and second slots respectively and adapted to be engaged by said first and second members respectively to position said members in said slots, said holder having inlet and outlet openings formed therein which open into the overlapping portions of said first and second slots respectively, said inlet and outlet openings being formed in spaced relation to said first and second shoulders respectively to effect alignment with the fluid passageways of said first and second members respectively.
Claim 6
Dependent Claim
194 words
In a chromatograph detector cell including a body having a fluid passageway therethrough and an opening extending from said fluid passageway outwardly to an external surface of said body, a temperature sensor disposed in the opening in said body and comprising a temperature-sensing element and a thermally conductive envelope for said temperature-sensing element, a deformable sealing member disposed on said temperature-sensor envelope for pReventing leakage from the fluid passageway through the opening in said body, a force-exerting member disposed on said temperature-sensor envelope outwardly from said sealing member and movable toward the fluid passageway, said sealing member having forward and rearward radially outwardly tapering surfaces formed thereon, the opening formed in said body being defined by wall means having a reduced portion inwardly of said sealing member and into which said forward tapering surface on said sealing member is adapted to be forced by said force exerting member to constrict said sealing member about said temperature-sensor envelope in fluid-sealing relation thereto, said force exerting member being engageable with said rearward tapering surface on said sealing member whereby said rearward tapering surface is expanded by said force-exerting member in fluid-sealing relation against said wall means.
Claim 7
Dependent Claim
194 words
In a chromatograph detector cell including a body having a fluid passageway therethrough and an opening extending from said fluid passageway outwardly to an external surface of said body, a temperature sensor disposed in the opening in said body and comprising a temperature-sensing element and a thermally conductive envelope for said temperature-sensing element, a deformable sealing member disposed on said temperature-sensor envelope for pReventing leakage from the fluid passageway through the opening in said body, a force-exerting member disposed on said temperature-sensor envelope outwardly from said sealing member and movable toward the fluid passageway, said sealing member having forward and rearward radially outwardly tapering surfaces formed thereon, the opening formed in said body being defined by wall means having a reduced portion inwardly of said sealing member and into which said forward tapering surface on said sealing member is adapted to be forced by said force exerting member to constrict said sealing member about said temperature-sensor envelope in fluid-sealing relation thereto, said force exerting member being engageable with said rearward tapering surface on said sealing member whereby said rearward tapering surface is expanded by said force-exerting member in fluid-sealing relation against said wall means.
Claim 8
Dependent Claim
38 words
In a chromatograph detector cell as defined in claim 5, wherein said force-exerting member has a tapered leading portion adapted to engage said rearward tapering surface and force said rearward tapering surface into engagement with said wall means.
Claim 9
Dependent Claim
33 words
In a chromatograph detector cell according to claim 5, wherein said seal member has a generally V-shaped cross-sectional configuration with the axis of the V lying along the axis of said temperature sensor.
Claim 10
Dependent Claim
144 words
In a chromatograph detector cell including a body having a fluid passageway formed therethrough and defining an external surface surrounding the fluid passageway, said fluid passageway being adapted to have a material compacted therein, temperature-sensing means associated with the fluid passageway and adapted to sense the temperature therein, and a conduit disposed in fluid communication with the fluid passageway of said body to enable fluids to flow between the conduit and the fluid passageway, the improvement comprising, a compressible flange formed on said conduit in engagement with the surface of said body surrounding the fluid passageway, and means adapted to press the compressible flange of said conduit against the surface of said body surrounding said fluid passageway to deform said flange in fluid-sealing relation to said body to prevent leakage of the fluid flowing between said conduit and the fluid passageway of said body.
Claim 11
Dependent Claim
144 words
In a chromatograph detector cell including a body having a fluid passageway formed therethrough and defining an external surface surrounding the fluid passageway, said fluid passageway being adapted to have a material compacted therein, temperature-sensing means associated with the fluid passageway and adapted to sense the temperature therein, and a conduit disposed in fluid communication with the fluid passageway of said body to enable fluids to flow between the conduit and the fluid passageway, the improvement comprising, a compressible flange formed on said conduit in engagement with the surface of said body surrounding the fluid passageway, and means adapted to press the compressible flange of said conduit against the surface of said body surrounding said fluid passageway to deform said flange in fluid-sealing relation to said body to prevent leakage of the fluid flowing between said conduit and the fluid passageway of said body.
Claim 12
Dependent Claim
136 words
In a chromatograph detector cell according to claim 8, further comprising a holder having a slot formed therein and adapted to have said body disposed therein, said holder having a shoulder formed therein transversely to said slot and adapted to position said body in said slot, said holder having an opening formed therein which opens into the slot in spaced relation to the transverse shoulder and in alignment with the fluid passageway of said body disposed in said slot in engagement with said shoulder, said means to press the compressible flange of said conduit against said body being coupling means disposed in said opening of said holder and having a central bore formed therein, and said conduit being disposed in the central bore of said coupling means in alignment with the fluid passageway of said body.
Claim 13
Dependent Claim
267 words
In a chromatograph detector cell including first and second members each having a fluid passageway formed therethrough and opening onto an external surface, said first and second members being adapted to be disposed with the fluid passageways thereof in fluid communication with each other, the fluid passageway of said second member being adapted to have a material compacted therein, temperature-sensing means associated with the fluid passageway of said second member and adapted to sense the temperature therein, and a seal member having a fluid passageway formed therethrough with external openings, said seal member being adapted to be disposed in fluid-sealing relation to the external surfaces of said first and second members with the fluid passageway of said seal member being in fluid communication with the fluid passageways of said first and second members, the improvEment comprising said seal member having external edges with the external openings of the fluid passageway of said seal member being formed in spaced relation to an adjacent edge of said seal member, said first and second members each having a shoulder formed thereon adjacent to the fluid passageway opening on the external surface thereof, said shoulders on said first and second members each being adapted to engage an edge of said seal member adjacent an external opening of the fluid passageway formed therethrough, said shoulders on said first and second members each being formed in spaced relation to the external opening of the fluid passageway of the external surface of said member to effect alignment thereof with the opening of the fluid passageway of said seal member and establish fluid communication therebetween.
Claim 14
Dependent Claim
267 words
In a chromatograph detector cell including first and second members each having a fluid passageway formed therethrough and opening onto an external surface, said first and second members being adapted to be disposed with the fluid passageways thereof in fluid communication with each other, the fluid passageway of said second member being adapted to have a material compacted therein, temperature-sensing means associated with the fluid passageway of said second member and adapted to sense the temperature therein, and a seal member having a fluid passageway formed therethrough with external openings, said seal member being adapted to be disposed in fluid-sealing relation to the external surfaces of said first and second members with the fluid passageway of said seal member being in fluid communication with the fluid passageways of said first and second members, the improvEment comprising said seal member having external edges with the external openings of the fluid passageway of said seal member being formed in spaced relation to an adjacent edge of said seal member, said first and second members each having a shoulder formed thereon adjacent to the fluid passageway opening on the external surface thereof, said shoulders on said first and second members each being adapted to engage an edge of said seal member adjacent an external opening of the fluid passageway formed therethrough, said shoulders on said first and second members each being formed in spaced relation to the external opening of the fluid passageway of the external surface of said member to effect alignment thereof with the opening of the fluid passageway of said seal member and establish fluid communication therebetween.
Claim 15
Dependent Claim
71 words
In a chromatograph detector cell according to claim 10, said seal member being block-shaped with the external openings of the fluid passageway of said seal member being on laterally opposite sides, and said first and second members each having laterally opposite shoulders formed thereon with said shoulders being adapted to engage laterally opposite sides of said seal member to effect alignment between the fluid passageways of said first and second members.
Claim 16
Dependent Claim
268 words
In a chromatograph detector cell including first and second members each having a fluid passageway formed therethrough, a compressible seal member with a fluid passageway formed therethrough being disposed with the fluid passageway thereof in fluid communication and coaxial with the fluid passageways of said first and second members, a holder having first and second longitudinally extending open slots formed therein with an opening formed therebetween, the longitudinal axis of said slots extending generally transverse to the longitudinal axis of said coaxial fluid passageways in said first and second members and said seal member, said first and second members being disposed respectively in said first and second slots and said seal member being disposed in the opening between said slots, said compressible seal member being adapted to be deformed in fluid-sealing relation to said first and second members, a cover plate attached to said holder and covering said first and second slots and the opening therebetween to laterally align said first and second members and said seal member disposed in said holder and confine the deformable seal member to limit the space into which it may be deformed, and said holder having first and second fastening means disposed therein and adapted to engage said first and second members respectively, said first and second fastening means being adapted to exert forces against said first and second members in a direction parallel to the axis of said fluid passageway thereby to press said first and second members against said compressible seal member to deform said seal member in fluid-sealing relation to the fluid passageways of said first and second members.
Claim 17
Dependent Claim
268 words
In a chromatograph detector cell including first and second members each having a fluid passageway formed therethrough, a compressible seal member with a fluid passageway formed therethrough being disposed with the fluid passageway thereof in fluid communication and coaxial with the fluid passageways of said first and second members, a holder having first and second longitudinally extending open slots formed therein with an opening formed therebetween, the longitudinal axis of said slots extending generally transverse to the longitudinal axis of said coaxial fluid passageways in said first and second members and said seal member, said first and second members being disposed respectively in said first and second slots and said seal member being disposed in the opening between said slots, said compressible seal member being adapted to be deformed in fluid-sealing relation to said first and second members, a cover plate attached to said holder and covering said first and second slots and the opening therebetween to laterally align said first and second members and said seal member disposed in said holder and confine the deformable seal member to limit the space into which it may be deformed, and said holder having first and second fastening means disposed therein and adapted to engage said first and second members respectively, said first and second fastening means being adapted to exert forces against said first and second members in a direction parallel to the axis of said fluid passageway thereby to press said first and second members against said compressible seal member to deform said seal member in fluid-sealing relation to the fluid passageways of said first and second members.
Claim 18
Dependent Claim
178 words
A chromatograph detector cell for detecting the passage of unknown fluids from a chromatograph column, said cell comprising means defining a fluid passageway chemically inert throughout its entire length to the fluids flowing therethrough and having first and second portions with the second portion adapted to have a material compacted therein, a first temperature sensor associated with the first portion of the fluid passageway in a chemically inert manner and adapted to sense the temperature therein, a second temperature sensor associated with the second portion of the fluid passageway in a chemically inert manner and adapted to sense the temperature therein, a conduit in fluid communication with said fluid passageway and chemically inert to the fluids flowing therethrough, said conduit having a compressible flange formed thereon in engagement with said means defining the fluid passageway, and means adapted to press the compressible flange of said conduit against said means defining the fluid passageway to defoRm said flange in fluid-sealing relation thereto so as to prevent leakage of fluid flowing between said conduit and said fluid passageway defining means.
Claim 19
Dependent Claim
178 words
A chromatograph detector cell for detecting the passage of unknown fluids from a chromatograph column, said cell comprising means defining a fluid passageway chemically inert throughout its entire length to the fluids flowing therethrough and having first and second portions with the second portion adapted to have a material compacted therein, a first temperature sensor associated with the first portion of the fluid passageway in a chemically inert manner and adapted to sense the temperature therein, a second temperature sensor associated with the second portion of the fluid passageway in a chemically inert manner and adapted to sense the temperature therein, a conduit in fluid communication with said fluid passageway and chemically inert to the fluids flowing therethrough, said conduit having a compressible flange formed thereon in engagement with said means defining the fluid passageway, and means adapted to press the compressible flange of said conduit against said means defining the fluid passageway to defoRm said flange in fluid-sealing relation thereto so as to prevent leakage of fluid flowing between said conduit and said fluid passageway defining means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |