Patent US1289569A successfully refreshed from Google Patents.
Patent US4659907A successfully refreshed from Google Patents.
Patent US3245148A successfully refreshed from Google Patents.
US3245148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roundness gage
Assignee: Motors Liquidation Co
•
Filing: 1960-07-26
•
Granted: 1966-04-12
•
Expires: 1980-07-26
Abstract
No abstract record available.
Inventors
- 👤 Donald R Whitney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:10
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/28; G01B7/282
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
206 words
IN ROUNDNESS MEASURING APPARATUS, DRIVE MEANS FOR ROTATING A CIRCULAR PART, A FIRST DISPLACEMENT PICKUP POSITIONED TO BEAR UPON SAID PART AND ADAPTED TO PRODUCE A FIRST SIGNAL, A CIRCULAR CAM CONNECTED TO SAID DRIVE MEANS TO ROTATE IN SYNCHRONIZATION WITH SAID PART, SECOND AND THIRD DISPLACEMENT PICKUPS POSITIONED TO BEAR UPON SAID CAM AT ARCUATELY SPACED POINTS AND ADAPTED TO PRODUCE SECOND AND THIRD SIGNALS, FIRST AND SECOND CONTROL MEANS FOR VARYING AMPLITUDE AND PHASE OF EACH OF SAID SECOND AND THIRD SIGNALS RESPECTIVELY, FIRST COMBINING MEANS CONNECTED TO SAID FIRST AND SECOND PICKUPS AND ADAPTED TO PRODUCE A FIRST COMPOSITE OUTPUT REPRESENTING THE SUM OF SAID FIRST AND SECOND SIGNALS, FIRST SYNCHRONOUS RECTIFICATION MEANS CONNECTED TO RECEIVE SAID FIRST COMPOSITE OUTPUT, MEANS CONNECTED TO RECEIVE THE OUTPUT OF SAID FIRST RECTIFICATION MEANS AND ADAPTED TO ACTIVATE SAID FIRST CONTROL MEANS IN RESPONSE THERETO, SECOND COMBINING MEANS CONNECTED TO SAID FIRST AND THIRD PICKUPS AND ADAPTED TO PRODUCE A SECOND COMPOSITE OUTPUT REPRESENTING THE SUM OF SAID FIRST AND THIRD SIGNALS, SECOND SYNCHRONOUS RECTIFICATION MEANS CONNECTED TO RECEIVE SAID SECOND COMPOSITE OUTPUT, AND MEANS CONNECTED TO RECEIVE THE OUTPUT OF SAID SECOND RECTIFICATION MEANS AND ADAPTED TO ACTIVATE SAID SECOND CONTROL MEANS IN RESPONSE THERETO.
Claim 2
Dependent Claim
206 words
IN ROUNDNESS MEASURING APPARATUS, DRIVE MEANS FOR ROTATING A CIRCULAR PART, A FIRST DISPLACEMENT PICKUP POSITIONED TO BEAR UPON SAID PART AND ADAPTED TO PRODUCE A FIRST SIGNAL, A CIRCULAR CAM CONNECTED TO SAID DRIVE MEANS TO ROTATE IN SYNCHRONIZATION WITH SAID PART, SECOND AND THIRD DISPLACEMENT PICKUPS POSITIONED TO BEAR UPON SAID CAM AT ARCUATELY SPACED POINTS AND ADAPTED TO PRODUCE SECOND AND THIRD SIGNALS, FIRST AND SECOND CONTROL MEANS FOR VARYING AMPLITUDE AND PHASE OF EACH OF SAID SECOND AND THIRD SIGNALS RESPECTIVELY, FIRST COMBINING MEANS CONNECTED TO SAID FIRST AND SECOND PICKUPS AND ADAPTED TO PRODUCE A FIRST COMPOSITE OUTPUT REPRESENTING THE SUM OF SAID FIRST AND SECOND SIGNALS, FIRST SYNCHRONOUS RECTIFICATION MEANS CONNECTED TO RECEIVE SAID FIRST COMPOSITE OUTPUT, MEANS CONNECTED TO RECEIVE THE OUTPUT OF SAID FIRST RECTIFICATION MEANS AND ADAPTED TO ACTIVATE SAID FIRST CONTROL MEANS IN RESPONSE THERETO, SECOND COMBINING MEANS CONNECTED TO SAID FIRST AND THIRD PICKUPS AND ADAPTED TO PRODUCE A SECOND COMPOSITE OUTPUT REPRESENTING THE SUM OF SAID FIRST AND THIRD SIGNALS, SECOND SYNCHRONOUS RECTIFICATION MEANS CONNECTED TO RECEIVE SAID SECOND COMPOSITE OUTPUT, AND MEANS CONNECTED TO RECEIVE THE OUTPUT OF SAID SECOND RECTIFICATION MEANS AND ADAPTED TO ACTIVATE SAID SECOND CONTROL MEANS IN RESPONSE THERETO.
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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |