US3281121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dielectric chain
Assignee: Individual
•
Filing: 1963-11-26
•
Granted: 1966-10-25
•
Expires: 1983-11-26
Abstract
No abstract record available.
Inventors
- 👤 Ralph A Ratcliff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:35
CPC Classifications
F; F16; F16G; F16G13/00; F16G13/02; F16G13/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A DIELECTRIC CHAIN FOR USE IN CONJUNCTION WITH SHEAVES IN HOISTS AND OTHER LOAD SUSTAINING DEVICES, COMPRISING A SERIES OF ALTERNATE GENERALLY SPACED LINKS OF NON-CONDUCTING AND ESSENTIALLY NON-STRETCHABLE DIELECTRIC MATERIAL, AND MEANS INTERPOSED BETWEEN AND PIVOTALLY INTERCONNECTING EACH ADJACENT PAIR OF DIELECTRIC LINKS WITH EACH OTHER IN A FLEXIBLE NON-CONDUCTING AND ESSENTIALLY NON-STRETCHABLE CHAIN ASSEMBLY WHICH IS ADAPTED TO PASS OVER A SHEAVE WHICH IS CONTOURED IN ACCORDANCE WITH THE CONTOUR OF SAID DIELECTRIC LINKS; SAID MEANS COMPRISING A SERIES OF PINS EXTENDING TRANSVERSELY THROUGH ADJACENT DIELECTRIC LINKS, AND A SERIES OF SIDE PLATES SECURED TO AND EXTENDING BETWEEN ALTERNATE PAIRS OF ADJACENT PINS WHEREBY ADJACENT DIELECTRIC LINKS ARE PIVOTALLY INTERCONNECTED WITH EACH OTHER AND MAINTAINED GENERALLY SPACED FROM EACH OTHER BY SAID PINS AND SIDE PLATES.
Claim 2
Dependent Claim
128 words
A DIELECTRIC CHAIN FOR USE IN CONJUNCTION WITH SHEAVES IN HOISTS AND OTHER LOAD SUSTAINING DEVICES, COMPRISING A SERIES OF ALTERNATE GENERALLY SPACED LINKS OF NON-CONDUCTING AND ESSENTIALLY NON-STRETCHABLE DIELECTRIC MATERIAL, AND MEANS INTERPOSED BETWEEN AND PIVOTALLY INTERCONNECTING EACH ADJACENT PAIR OF DIELECTRIC LINKS WITH EACH OTHER IN A FLEXIBLE NON-CONDUCTING AND ESSENTIALLY NON-STRETCHABLE CHAIN ASSEMBLY WHICH IS ADAPTED TO PASS OVER A SHEAVE WHICH IS CONTOURED IN ACCORDANCE WITH THE CONTOUR OF SAID DIELECTRIC LINKS; SAID MEANS COMPRISING A SERIES OF PINS EXTENDING TRANSVERSELY THROUGH ADJACENT DIELECTRIC LINKS, AND A SERIES OF SIDE PLATES SECURED TO AND EXTENDING BETWEEN ALTERNATE PAIRS OF ADJACENT PINS WHEREBY ADJACENT DIELECTRIC LINKS ARE PIVOTALLY INTERCONNECTED WITH EACH OTHER AND MAINTAINED GENERALLY SPACED FROM EACH OTHER BY SAID PINS AND SIDE PLATES.
References Cited (Backward Citations)
GB442378A
Cited
US2158622A
Cited
FR1079285A
Cited
DE941883C
Cited
FR1082464A
Cited
US3137166A
Cited
GB792578A
Cited
DE1030122B
Cited
US2967046A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |