US4065959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable viscometer apparatus
Assignee: RICHMORE Co
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Filing: 1976-12-08
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Granted: 1978-01-03
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Expires: 1996-12-08
Abstract
Abstract A portable viscometer, used in conjunction with a belt mounted computer, for making field viscosity measurements and for taking samples of various liquids such as paint mixes, asphalt cements, liquid asphalts, asphalt, emulsions, etc. A disposable cup, arranged at the bottom of a frame, permits the frame to be immersed in the fluid to be tested, a sample cup holder with fluid level probes is moved into position under the disposable cup and releasable stopper means permits fluid to drain from the disposable cup into the sample cup, with the computer timing the flow, and measuring the temperature.
Inventors
- 👤 Harold W. Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:33
CPC Classifications
G; G01; G01N; G01N11/00; G01N11/02; G01N11/04; G01N11/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
133 words
A field or portable viscometer, comprising: a. portable elongated frame means; b. support means at one end of said frame means for releasably supporting an open top disposable cup for receiving a fluid for sampling, the disposable cup having a single small opening the bottom thereof; c. releasable support means on said frame means for holding a sample cup and for positioning the sample cup beneath the disposable cup for receiving fluid draining from the disposable cup; d. drain means, including a predetermined sized openings, for draining the fluid from the disposable cup to the sample cup; e. valve means for opening and closing said drain means; and f. means for measuring the temperature of the fluid and for timing the flow of a known amount of the fluid through the sized opening.
Claim 2
Dependent Claim
133 words
A field or portable viscometer, comprising: a. portable elongated frame means; b. support means at one end of said frame means for releasably supporting an open top disposable cup for receiving a fluid for sampling, the disposable cup having a single small opening the bottom thereof; c. releasable support means on said frame means for holding a sample cup and for positioning the sample cup beneath the disposable cup for receiving fluid draining from the disposable cup; d. drain means, including a predetermined sized openings, for draining the fluid from the disposable cup to the sample cup; e. valve means for opening and closing said drain means; and f. means for measuring the temperature of the fluid and for timing the flow of a known amount of the fluid through the sized opening.
Claim 3
Dependent Claim
127 words
A portable viscometer as recited in claim 1 wherein the means for measuring the temperature of the fluid and for timing the flow of a known amount of the fluid through the sized opening comprises: a. temperature sensor means mounted to contact the contents of the disposable cup; b. a first time start sensor and a second time stop sensor connected to a belt mounted computer, said sensors being mounted in position to contact the contents of the sample cup, and said sensors being arranged to conjointly define a known volume by a staggered location, such that when the level of fluid draining into the sample cup reaches the first sensor, a timer is activated and when the level reaches the second sensor the timer is deactivated.
Claim 4
Dependent Claim
41 words
A portable viscometer as recited in claim 1 wherein the drain means comprises: a drain tube with a sized opening affixed to the hole in the disposable cup and connecting the disposable cup through said frame means to the sample cup.
Claim 5
Dependent Claim
57 words
A portable viscometer as recited in claim 1 wherein the valve means comprises: a. a stopper arranged to open and close the opening of said drain tube; b. said stopper connected to a rod, slidably mounted in said frame means, with a spring for holding said stopper against said drain tube and a handle for manual actuation.
Claim 6
Dependent Claim
121 words
A portable viscometer as recited in claim 1 wherein the frame means comprises: a. a handle; b. two plates connected by tubing to said handle, one of said plates with a lip for supporting the disposable cup, the other of said plates for preventing vertical movement of the disposable cup; c. a slidable rod mounted in bores in said handle and said plates, for retaining the disposable cup on said plates; d. a plug mounted in said handle for attaching a belt mounted computer to sensors placed in the disposable cup and the sample cup; e. a centering pin mounted on one of said plates, for aligning said movable sample cup support means and the sample cup, under the disposable cup.
Claim 7
Dependent Claim
136 words
A portable viscometer as recited in claim 5 wherein the movable support means for holding the sample cup comprises: a. a cup holder with an opening at the bottom for inserting the sample cup and a plurality of smaller openings at the top for draining the fluid into the sample cup, and for introducing sensors into the sample cup; b. a leaf spring attached to the cup holder, with a tab for holding the sample cup in the cup holder; c. a tube with a handle, attached to said cup holder, for mounting said cup holder in bores in said frame means and for rotating and moving said cup holder with respect to said frame means; and d. a spring between said tube and said frame means for holding said cup holder against said frame means.
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) | 1981-01-02 | 1981-07-04 | 1982-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-02 | 1985-07-04 | 1986-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-02 | 1989-07-04 | 1990-01-03 | $7700.00 | Window Closed / Lapsed |