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US 4,227,414 AGranted
Liquid testing kit
AssigneeJ & M Instruments Corp.
InventorJoseph R. Elkins
Life of this patent
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AssigneeJ & M Instruments Corp.
InventorJoseph R. Elkins
Estimating the term…
A liquid testing kit for determining the pH value of a liquid body at various depths includes a pH tester and a liquid sampling container having a spring-hinged lid. The container is adapted to be lowered to various depths with the lid in open position. The hinge is then remotely triggered to close the lid at the desired depth whereupon the container is removed from the liquid body. A self-seating ridged planar seal is employed between the lid and the container. The removed container can be stood upright, and a plurality of vertical internal supporting webs are dimensioned so as to accommodate a pH test instrument in the container. The hinge includes a crank arm having a support post against which a closing or opening tensile force is applied. The crank arm is pivoted from a first position wherein the tensile force creates an opening moment to a position wherein the post lies on the opposite side of a pivot so that a tensile force at the same post creates a closing moment. A control line which is fixed to the crank arm remote from the pivot is employed for the purpose of lowering the sampling container to the desired level in the liquid and triggering the crank arm to close the lid.
A kit for rendering an in situ property measurement of a liquid, said kit comprising a vessel adapted to be lowered into the liquid, the vessel having an open mouth for receiving a specimen of the liquid and an instrument for measuring the liquid property, the vessel being so dimensioned as to accommodatingly receive the instrument, the vessel including a plurality of ribs projecting inwardly and defining an area for supporting the instrument, the instrument including a pair of electrodes, the ribs being spaced from the electrodes so as to permit intimate contact between the liquid specimen and the electrodes whereby accurate measurement is facilitated.
A sampling container adapted to be suspended from a flexible line for the collection of liquid specimens at various depths in a liquid body, the container including a vessel having an open mouth and closure means, the closure means comprising a lid for sealing the mouth and hinge means interconnecting the lid and the vessel, the hinge means including lid carrying means, pivot means rotatively mounting the carrying means, biasing means for maintaining the lid in an open position, and means for reversing the bias of the biasing means to remotely close the lid over the mouth, the carrying means including means for attachment of the line, the attachment means being spaced from the axis of the pivot means.
A sampling container constructed in accordance with claim 6 wherein the means for reversing the bias of the biasing means includes means for rotating the carrying means about the axis of the pivot means to effect translational movement of the point across the axis of the pivot means whereby the opening moment of the biasing means is reversed to close the lid.
A sampling container constructed in accordance with claim 7 wherein the means for reversing the bias of the biasing means comprises means for applying for applying a dynamic force to the carrying means.
A sampling container constructed in accordance with claim 8 wherein the dynamic force is applied at the attachment means, the reversing means further including a flexible line, the flexible line engaging the carrying means at the attachment means.
A container for sampling and holding various liquids, the container including a vessel having an open mouth, a lid for selectively closing the mouth, and hinge means interconnecting the lid and the vessel, the hinge means including lid carrying means and pivot means rotatively mounting the carrying means, means mounting the lid to the carrying means for limited movement with respect to the carrying means, the lid including a sealing surface in selective engagement with the mouth, the sealing surface comprising a pair of planes intersecting along a ridge, the mouth of the vessel being defined by a continuous edge, the edge being shaped in conformity with the intersecting planes of the sealing surface, whereby the loose engagement between the lid and the carrying means permits the sealing surface to seat itself on the edge of the mouth when the lid is closed.
Dependencies are inferred from the claim text.