Patent US3878099A successfully refreshed from Google Patents.
US3878099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mounting for liquid chromatograph column
Assignee: Beckman Coulter Inc
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Filing: 1974-04-08
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Granted: 1975-04-15
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Expires: 1994-04-08
Abstract
Abstract A water jacketed chromatograph resin column for a liquid chromatograph analyzer is provided with end fittings which may be attached to the column and the end fittings are secured to mounting brackets on a panel to relieve the water jacket and the column of tensile forces resulting from liquid pressure in the column.
Inventors
- 👤 David G Ogle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:14
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/60; G01N30/6004; G01N30/6026; G01N30/6034
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
201 words
A mounting for a water-jacketed liquid chromatograph column comprising a pressurized tube containing component-separating resin, having an outside surface, and having first and second ends with inlet and outlet connections for eluent, and a hollow cylinder surrounding the tube and having lateral inlet and outlet connections to form a water jacket and having cylindrical surfaces with first and second ends, wherein the improvement comprises: a first end fitting surrounding the tube and receiving the first end of the tube, a second end fitting surrounding the tube and receiving the second end of the tube, sealing means between the fittings and the outside surface of the tube, sealing means between the fittings and a cylindrical Surface of the hollow cylinder, a column support member capable of withstanding force, a first connector engaging said support member and said first fitting, and a second connector engaging said support member and said second fitting, whereby the tube and the hollow cylinder are free to elongate and contract, and internal pressure in the tube and in the cylinder acting longitudinally acts against the fittings to be taken up by the column support member without subjecting the tube or the cylinder to longitudinal force or tensile strain.
Claim 2
Dependent Claim
201 words
A mounting for a water-jacketed liquid chromatograph column comprising a pressurized tube containing component-separating resin, having an outside surface, and having first and second ends with inlet and outlet connections for eluent, and a hollow cylinder surrounding the tube and having lateral inlet and outlet connections to form a water jacket and having cylindrical surfaces with first and second ends, wherein the improvement comprises: a first end fitting surrounding the tube and receiving the first end of the tube, a second end fitting surrounding the tube and receiving the second end of the tube, sealing means between the fittings and the outside surface of the tube, sealing means between the fittings and a cylindrical Surface of the hollow cylinder, a column support member capable of withstanding force, a first connector engaging said support member and said first fitting, and a second connector engaging said support member and said second fitting, whereby the tube and the hollow cylinder are free to elongate and contract, and internal pressure in the tube and in the cylinder acting longitudinally acts against the fittings to be taken up by the column support member without subjecting the tube or the cylinder to longitudinal force or tensile strain.
Claim 3
Dependent Claim
47 words
The improvement defined in claim 1 wherein the force withstanding member constitutes a support, the first connector comprises a first bracket secured to the support and engaging the first fitting, and the second connector comprises a second bracket secured to the support and engaging the second fitting.
Claim 4
Dependent Claim
20 words
The improvement defined in claim 2 wherein the support comprises a panel with means for adjustably positioning the brackets thereon.
Claim 5
Dependent Claim
58 words
The improvement defined in claim 3 wherein the water-jacketed cylinder has an inner surface and each fitting has a tubular extension with a surface surrounded by the inner surface at one end of the water jacket hollow cylinder and one of the adjacent surfaces has an annular groove wherein the sealing means for such adjacent surfaces is contained.
Claim 6
Dependent Claim
70 words
The improvement defined in claim wherein each end fitting comprises a restrained part and a part removably secured to the support member, the bracket and the restrained part of the end fitting having surfaces abutting each other whereby the restrained part is held against longitudinal movement, and the removably secured parts are positioned longitudinally inward of the restrained parts and endwise movement thereof is also limited by the restrained parts.
Claim 7
Dependent Claim
34 words
The improvement defined in claim 3 wherein the first fitting is an upper fitting and the second fitting is a lower fitting and the tube and hollow cylinder are mounted with a vertical axis.
Claim 8
Dependent Claim
28 words
The improvement defined in claim 6 wherein the hollow cylinder water jacket has a fluid inlet at its lower end and a fluid outlet at its upper end.
Claim 9
Dependent Claim
44 words
The improvement defined in claim 5 wherein the removably secured parts of the end fittings carry the sealing means and are adapted to abut the bracket to limit longitudinal movement of the removably secured parts under force from pressure within the water jacket cylinder.
Claim 10
Dependent Claim
158 words
In a liquid chromatograph column: a tubular column, a component separating resin supported within said column, an eluent-supplying tube of smaller diameter than the bore of the tubular column, said eluent tube having an integral flange at the end thereof fitting in the bore of the tubular column, said flange positioned to substantially abut against said resin, a sealing member surrounding the eluent tube adjacent said flange and sealing the space between the outer surface of said eluent tube and the inner surface of said column, a substantially rigid clampable tube surrounding the eluent tube within the bore of the tubular column, said clampable tube having an end adapted to abut against said sealing member and forcing said sealing member against said flange whereby the seal and the clampable tube relieve the tubular column of axial force created by hydrostatic pressure within said column and, as the pressure increases, the seal provided by the sealing member is tightened.
Claim 11
Dependent Claim
158 words
In a liquid chromatograph column: a tubular column, a component separating resin supported within said column, an eluent-supplying tube of smaller diameter than the bore of the tubular column, said eluent tube having an integral flange at the end thereof fitting in the bore of the tubular column, said flange positioned to substantially abut against said resin, a sealing member surrounding the eluent tube adjacent said flange and sealing the space between the outer surface of said eluent tube and the inner surface of said column, a substantially rigid clampable tube surrounding the eluent tube within the bore of the tubular column, said clampable tube having an end adapted to abut against said sealing member and forcing said sealing member against said flange whereby the seal and the clampable tube relieve the tubular column of axial force created by hydrostatic pressure within said column and, as the pressure increases, the seal provided by the sealing member is tightened.
Claim 12
Dependent Claim
53 words
The combination defined in claim 9 including a bushing surrounding the eluent tube, fitting in the bore of the tubular column, between the sealing member and the end of the clampable tube to transmit axial force acting on the sealing member to the end of the clampable tube and provide a seal therebetween.
Claim 13
Dependent Claim
20 words
The combination defined in claim 10 including a porous disc of polymeric material interposed between the resin and the flange.
Claim 14
Dependent Claim
26 words
The combination defined in claim 11 for the lower end of a column, including a resin support screen interposed between The porous disc and the resin.
Claim 15
Dependent Claim
15 words
The combination defined in claim 9 in which said eluent tube is a flexible member.
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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |