Patent US2919138A successfully refreshed from Google Patents.
Patent US3405556A successfully refreshed from Google Patents.
US3405556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring the twist of a cord
Assignee: Akzo NV
•
Filing: 1966-07-18
•
Granted: 1968-10-15
•
Expires: 1986-07-18
Abstract
No abstract record available.
Inventors
- 👤 Victor E Gonsalves
- 👤 Vries Onno T De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:29
CPC Classifications
D; D07; D07B; D07B7/00; D07B7/02; D07B7/022; G; G01; G01N; G01N33/00; G01N33/36; G01N33/365
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
AN APPARATUS FOR MEASURING THE TWIST OF A CORD WHICH COMPRISES TWIST PICKUP MEANS FOR OBSERVING THE HUMPS IN THE CORD TO BE TESTED, COUNTING MEANS FOR COUNTING THE HUMPS OF THE CORD OBSERVED BY THE PICKUP MEANS, A ROTATABLY SUPPORTED DISK OVER WHICH THE CORD IS PASSED, GUIDE MEANS FOR GUIDING THE CORD WHEREBY THE CORD TRAVELS AT A SPEED WHICH IS EQUAL TO THE CIRCUMFERENTIAL SPEED OF THE DISK AT THE POINT WHERE SAID DISK IS IN CONTACT WITH THE CORD, AND CONTROL MEANS FOR INSURING THAT THE COUNTING MEANS IS IN OPERATION ONLY DURING THE TIME THE DISK MAKES A GIVEN ANGULAR DISPLACEMENT.
Claim 2
Independent Claim
106 words
AN APPARATUS FOR MEASURING THE TWIST OF A CORD WHICH COMPRISES TWIST PICKUP MEANS FOR OBSERVING THE HUMPS IN THE CORD TO BE TESTED, COUNTING MEANS FOR COUNTING THE HUMPS OF THE CORD OBSERVED BY THE PICKUP MEANS, A ROTATABLY SUPPORTED DISK OVER WHICH THE CORD IS PASSED, GUIDE MEANS FOR GUIDING THE CORD WHEREBY THE CORD TRAVELS AT A SPEED WHICH IS EQUAL TO THE CIRCUMFERENTIAL SPEED OF THE DISK AT THE POINT WHERE SAID DISK IS IN CONTACT WITH THE CORD, AND CONTROL MEANS FOR INSURING THAT THE COUNTING MEANS IS IN OPERATION ONLY DURING THE TIME THE DISK MAKES A GIVEN ANGULAR DISPLACEMENT.
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) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |