US4577412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rheometer rotor height gauge
Assignee: Goodyear Tire and Rubber Co
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Filing: 1984-10-18
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Granted: 1986-03-25
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Expires: 2004-10-18
Abstract
Abstract A rheometer rotor height gauge (54) with an indicator (56) on a sleeve (58) slidably mounted on a pedestal (62) of a base (60). A shaft (70) operatively connected to the indicator (56) projects downward to a rheometer rotor contacting member (68). The pedestal (62) is atop legs (64) atop feet (66). The gauge provides accurate readings of rotor (38) height relative to a rheometer die (14).
Inventors
- 👤 Robert L. McKinney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:52
CPC Classifications
G; G01; G01B; G01B3/00; G01B3/22; G01B5/00; G01B5/02; G01B5/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
144 words
A rheometer rotor height gauge for facilitating adjustment of the height of a rotor of a rheometer in relation to a die of the rheometer, the gauge comprising: an indicator for visual indicating variation of a position variable; a movable rotor contact member depending from and operatively connected to the indicator for contacting the rheometer rotor, whereby the position variable indicated by the indicator is rotor height; a base for supporting the indicator atop the die of the rheometer and supporting the rotor contact member atop the rotor in which the base includes a cylindrical pedestal, arcuate legs define a clear viewing gap for viewing the rotor contact member through the base, and feet, the pedestal being atop the legs and the legs being atop the feet; and leg portions depending downward of the pedestal between the feet for protecting the rotor contact member.
Claim 2
Dependent Claim
144 words
A rheometer rotor height gauge for facilitating adjustment of the height of a rotor of a rheometer in relation to a die of the rheometer, the gauge comprising: an indicator for visual indicating variation of a position variable; a movable rotor contact member depending from and operatively connected to the indicator for contacting the rheometer rotor, whereby the position variable indicated by the indicator is rotor height; a base for supporting the indicator atop the die of the rheometer and supporting the rotor contact member atop the rotor in which the base includes a cylindrical pedestal, arcuate legs define a clear viewing gap for viewing the rotor contact member through the base, and feet, the pedestal being atop the legs and the legs being atop the feet; and leg portions depending downward of the pedestal between the feet for protecting the rotor contact member.
Claim 3
Dependent Claim
39 words
A rheometer rotor height gauge as in claim 1 in which the indicator member is movable relative to the base, the gauge further comprising means for releasably fixing the indicator relative to the base for calibration of the gauge.
Claim 4
Dependent Claim
53 words
A rheometer rotor height gauge as in claim 1 in which the gauge further comprising a sleeve and shaft, the dial indicator being on the sleeve which is supported on the base, and the rotor contact member being on the shaft which is within the sleeve and operatively connected to the dial indicator.
Claim 5
Dependent Claim
25 words
A rheometer rotor height gauge as in claim 3 in which the sleeve is slidably mounted on the base for calibration of the dial indicator.
Claim 6
Dependent Claim
35 words
A rheometer rotor height gauge as in claim 1 in which the feet include rheometer die contacting surfaces coplanar with each other and lying in a plane perpendicular to a longitudinal extent of the sleeve.
Claim 7
Dependent Claim
133 words
A rheometer rotor height gauge for facilitating adjustment of the height of a rotor of a rheometer in relation to a die of the rheometer, the gauge comprising: a plurality of feet with die contacting surfaces coplanar in a plane; legs atop the feet; a pedestal atop the legs defining an opening perpendicular to the plane of the surfaces of the feet; a hollow sleeve slidably mounted in the opening of the pedestal; set screws mounted on the pedestal and movable against the sleeve to fix the sleeve relative to the pedestal; a dial indicator fixedly mounted on the sleeve; a shaft within the sleeve extending through the opening of the pedestal between the legs and operatively connected to the dial indicator; and a rheometer rotor contact member fixedly mounted on the shaft.
Claim 8
Dependent Claim
133 words
A rheometer rotor height gauge for facilitating adjustment of the height of a rotor of a rheometer in relation to a die of the rheometer, the gauge comprising: a plurality of feet with die contacting surfaces coplanar in a plane; legs atop the feet; a pedestal atop the legs defining an opening perpendicular to the plane of the surfaces of the feet; a hollow sleeve slidably mounted in the opening of the pedestal; set screws mounted on the pedestal and movable against the sleeve to fix the sleeve relative to the pedestal; a dial indicator fixedly mounted on the sleeve; a shaft within the sleeve extending through the opening of the pedestal between the legs and operatively connected to the dial indicator; and a rheometer rotor contact member fixedly mounted on the shaft.
Claim 9
Independent Claim
78 words
A method of calibrating a rheometer having a rheometer rotor and a rheometer die comprising: positioning a rheometer rotor height gauge with an indicator providing indicator readings and an operatively connected rotor contact member on the rheometer die with the rotor contact member in contact with the rheometer rotor and thereby actuating the indicator; and calibrating the rheometer by calibrating the height of the rheometer rotor in relation to the rheometer die on the basis of indicator readings.
Claim 10
Independent Claim
78 words
A method of calibrating a rheometer having a rheometer rotor and a rheometer die comprising: positioning a rheometer rotor height gauge with an indicator providing indicator readings and an operatively connected rotor contact member on the rheometer die with the rotor contact member in contact with the rheometer rotor and thereby actuating the indicator; and calibrating the rheometer by calibrating the height of the rheometer rotor in relation to the rheometer die on the basis of indicator readings.
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) | 1989-03-24 | 1989-09-23 | 1990-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-24 | 1993-09-23 | 1994-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-24 | 1997-09-23 | 1998-03-25 | $7700.00 | Window Closed / Lapsed |