US3320799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface testing apparatus
Assignee: ArvinMeritor Light Vehicle Systems UK Ltd
•
Filing: 1964-01-20
•
Granted: 1967-05-23
•
Expires: 1984-01-20
Abstract
No abstract record available.
Inventors
- 👤 Goodey David Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:30
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/34
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
123 words
SURFACE TESTING APPARATUS COMPRISING A HEAD INCLUDING A ROTATABLE CARRIER MEMBER, A TRANSDUCER CARRIED BY THE CARRIER MEMBER AND ARRANGED TO ENGAGE THE SURFACE UNDER TEST AT A POSITION OFFSET FROM THE AXIS OF ROTATION OF THE CARRIER MEMBER, A REGISTRATION MEMBER ON THE CARRIER MEMBER ARRANGED TO ENGAGE THE SURFACE AND DETERMINE THE POSITION OF THE CARRIER MEMBER WITH RESPECT THERETO, DRIVING MEANS FOR ROTATING THE CARRIER MEMBER SO THAT THE TRANSDUCER TRAVERSES THE SURFACE, THREE SPACED REGISTRATION MEMBERS FOR ENGAGEMENT WITH THE SURFACE TO DEFINE A REGISTRATION TRIANGLE WITHIN WHICH IS POSITIONED THE REGISTRATION MEMBER ON THE CARRIER MEMBER AND THE TRANSDUCER, AND INDICATING MEANS RESPONSIVE TO THE OUTPUT OF THE TRANSDUCER FOR INDICATING THE DEGREE OF SMOOTHNESS OF THE SURFACE.
References Cited (Backward Citations)
CA662820A
Cited
US2728222A
Cited
US3087329A
Cited
US3112642A
Cited
US3208272A
Cited
US3254530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-22 | 1970-11-21 | 1971-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-22 | 1974-11-21 | 1975-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-22 | 1978-11-21 | 1979-05-23 | $7700.00 | Window Closed / Lapsed |