US3254530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface roughness tracer head
Assignee: AMERICAN GAGE AND MACHINE Co
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Filing: 1962-11-20
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Granted: 1966-06-07
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Expires: 1982-11-20
Abstract
No abstract record available.
Inventors
- 👤 Ohringer Philip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:25
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A SURFACE ROUGHNESS TRACER HEAD WHICH COMPRISES (A) A HOUSING, (B) A STYLUS MOUNTED IN THE HOUSING FOR ENGAGEMENT WITH A SURFACE TO BE MEASURED, (C) TRANSDUCER MEANS MOUNTED IN THE HOUSING AND COUPLED WITH THE STYLUS FOR CONVERTING MOVEMENT THEREOF INTO AN ELECTRICAL SIGNAL, (D) A PLURALITY OF SPACED ROTATABLE BALLS FOR ROLLABLY SUPPORTING THE HOUSING UPON A SURFACE TO BE MEASURED, (E) A RESILIENT DAMPING SEAT FOR EACH OF SAID BALLS FORMED IN A BLOCK OF RESILIENT DAMPING MATERIAL HAVING A LOW COEFFICIENT OF FRICTION, (F) EACH OF SAID SEATS HAVING A SUBSTANTIALLY CONICAL SURFACE IN THE REGION THEREOF ENGAGED BY A BALL, AND (G) AN APERTURED RETAINING PLATE FOR RETAINING EACH BALL IN THE CORRESPONDNG SEAT AND SPACED FROM THE HOUSING TO BE OUT OF CONTACT WITH THE BALL DURING NORMAL USE.
Claim 2
Dependent Claim
135 words
A SURFACE ROUGHNESS TRACER HEAD WHICH COMPRISES (A) A HOUSING, (B) A STYLUS MOUNTED IN THE HOUSING FOR ENGAGEMENT WITH A SURFACE TO BE MEASURED, (C) TRANSDUCER MEANS MOUNTED IN THE HOUSING AND COUPLED WITH THE STYLUS FOR CONVERTING MOVEMENT THEREOF INTO AN ELECTRICAL SIGNAL, (D) A PLURALITY OF SPACED ROTATABLE BALLS FOR ROLLABLY SUPPORTING THE HOUSING UPON A SURFACE TO BE MEASURED, (E) A RESILIENT DAMPING SEAT FOR EACH OF SAID BALLS FORMED IN A BLOCK OF RESILIENT DAMPING MATERIAL HAVING A LOW COEFFICIENT OF FRICTION, (F) EACH OF SAID SEATS HAVING A SUBSTANTIALLY CONICAL SURFACE IN THE REGION THEREOF ENGAGED BY A BALL, AND (G) AN APERTURED RETAINING PLATE FOR RETAINING EACH BALL IN THE CORRESPONDNG SEAT AND SPACED FROM THE HOUSING TO BE OUT OF CONTACT WITH THE BALL DURING NORMAL USE.
References Cited (Backward Citations)
CA565564A
Cited
US2330801A
Cited
US2363691A
Cited
GB630848A
Cited
US2724783A
Cited
US2819486A
Cited
US3011219A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |