Fitting element with hydraulic grip force element
AssigneeAgilent Technologies, Inc.
InventorBernhard Dehmer
Life of this patent
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Abstract
A fitting element, in particular for an HPLC application, is configured for providing a fluidic coupling of a tubing to a fluidic device. The fitting element comprises a gripping piece to exert—upon coupling of the tubing to the fluidic device—a grip force (G) between the fitting element and the tubing. The gripping piece comprises a hydraulic element configured to transform an axial force (S) into a hydraulic pressure (P) within the hydraulic element. The hydraulic pressure (P) in the hydraulic element causes the grip force (G).
Claims21
A fitting element, in particular for an HPLC application, configured for providing a fluidic coupling of a tubing to a fluidic device, the fitting element comprising:
- a gripping piece configured to exert, upon coupling of the tubing to the fluidic device, a grip force (G) between the fitting element and the tubing, wherein the gripping piece comprises a hydraulic element configured to transform an axial force (S) into a hydraulic pressure (P) within the hydraulic element;
- a housing for housing the hydraulic element and for retaining the hydraulic element in a certain space, wherein the gripping piece at least partially defines the housing;
- a rigid piston movable in an axial direction of an elongation of the tubing for contacting the hydraulic element and exerting the axial force (S) on the hydraulic element;
- and
- a first joint element movable in the axial direction for contacting the piston and pushing the piston in the axial direction and into contact with the hydraulic element, wherein:
- the first joint element is configured for movably engaging a second joint element of the fluidic device by a screw connection, such that movably engaging the second joint element moves the first joint element in the axial direction;
- and
- the hydraulic pressure (P) in the hydraulic element causes the grip force (G).
A fitting element, in particular for an HPLC application, configured for providing a fluidic coupling of a tubing to a fluidic device, the fitting element comprising:
- a gripping piece configured to exert, upon coupling of the tubing to the fluidic device, a grip force (G) between the fitting element and the tubing, wherein the gripping piece comprises a hydraulic element configured to transform an axial force (S) into a hydraulic pressure (P) within the hydraulic element;
- a housing for housing the hydraulic element and for retaining the hydraulic element in a certain space, wherein the gripping piece at least partially defines the housing along a lower side of the hydraulic element;
- a first joint element configured to move in an axial direction of an elongation of the tubing, the first joint element having a front side in contact with a back surface of the hydraulic element to exert the axial force (S) on the hydraulic element, and a top side extending from the front side over a top surface of the hydraulic element, wherein the first joint element partially defines the housing of the hydraulic element along the back surface and the top surface of the hydraulic element;
- and
- a front element fixedly coupled to the lower side of the gripping piece to contact a front surface of the hydraulic element defining a front part of the housing;
- wherein the hydraulic pressure (P) in the hydraulic element causes the grip force (G).
Dependencies are inferred from the claim text.