US3641807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traffic machine for carpets
Assignee: Monsanto Co
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Filing: 1970-02-24
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Granted: 1972-02-15
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Expires: 1990-02-24
Abstract
Abstract A traffic machine for testing carpets to simulate the effect of flat floor wear thereon, said machine having a roller assembly comprising a beam pivotally connected to a lever, the beam being adapted to pivot on an axis substantially parallel to the direction assumed by the path of travel of a table, a plurality of rollers connected to said beam, the rollers being adapted to move substantially perpendicular to the direction of travel of the table.
Inventors
- 👤 Gene A Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:07
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/56; G01N33/00; G01N33/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
An apparatus for testing wear resistance properties of a test specimen comprising: a. a frame, b. a table for supporting the test specimen, said table being movably mounted on the frame; c. means for reciprocating said table at a predetermined rate; d. a lever mounted pivotally to the frame, a roller assembly mounted on said lever, said assembly including a beam pivotally connected to said lever, said beam being adapted to pivot on an axis substantially parallel to the plane of movement of the table, a plurality of rollers connected to the beam for engaging said test specimen, the rollers being adapted to be moved in a direction substantially perpendicular to the plane of movement of the table; and e. means applied to said lever for exerting a uniform force upon said assembly during the reciprocation of said table, and, thus, the test specimen supported thereon.
Claim 2
Independent Claim
146 words
An apparatus for testing wear resistance properties of a test specimen comprising: a. a frame, b. a table for supporting the test specimen, said table being movably mounted on the frame; c. means for reciprocating said table at a predetermined rate; d. a lever mounted pivotally to the frame, a roller assembly mounted on said lever, said assembly including a beam pivotally connected to said lever, said beam being adapted to pivot on an axis substantially parallel to the plane of movement of the table, a plurality of rollers connected to the beam for engaging said test specimen, the rollers being adapted to be moved in a direction substantially perpendicular to the plane of movement of the table; and e. means applied to said lever for exerting a uniform force upon said assembly during the reciprocation of said table, and, thus, the test specimen supported thereon.
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) | 1975-02-14 | 1975-08-16 | 1976-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-14 | 1979-08-16 | 1980-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-14 | 1983-08-16 | 1984-02-15 | $7700.00 | Window Closed / Lapsed |