US3075649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber draft gear
Assignee: Symington Wayne Corp
•
Filing: 1959-02-26
•
Granted: 1963-01-29
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Expires: 1979-02-26
Abstract
No abstract record available.
Inventors
- 👤 Blattner Elizabeth
- 👤 Winther Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:43
CPC Classifications
B; B61; B61G; B61G9/00; B61G9/04; B61G9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A RUBBER DRAFT GEAR COMPRISING A PAIR OF FOLLOWER BLOCKS, A RUBBER CUSHION INTERPOSED BETWEEN AND LONGITUDINALLY SPACING SAID FOLLOWER BLOCKS, A PAIR OF HOOKS RIGID WITH AND PROJECTING FROM ONE OF SAID FOLLOWER BLOCKS ALONG OPPOSITE SIDES OF SAID RUBBER CUSHION AND EACH INTERCOUPLING WITH ONE OF A PAIR OF HOOKS PROJECTING CORRESPONDINGLY FROM THE OTHER FOLLOWER BLOCK FOR LIMITING EXPANSION OF SAID RUBBER CUSHION, AND END SURFACES ON INTERCOUPLING HOOKS AND SLIDABLY ENGAGEABLE ON COMPRESSION OF SAID DRAFT GEAR FOR AUTOMATICALLY INTERCOUPLING SAID HOOKS DURING SUCH COMPRESSION.
Claim 2
Dependent Claim
89 words
A RUBBER DRAFT GEAR COMPRISING A PAIR OF FOLLOWER BLOCKS, A RUBBER CUSHION INTERPOSED BETWEEN AND LONGITUDINALLY SPACING SAID FOLLOWER BLOCKS, A PAIR OF HOOKS RIGID WITH AND PROJECTING FROM ONE OF SAID FOLLOWER BLOCKS ALONG OPPOSITE SIDES OF SAID RUBBER CUSHION AND EACH INTERCOUPLING WITH ONE OF A PAIR OF HOOKS PROJECTING CORRESPONDINGLY FROM THE OTHER FOLLOWER BLOCK FOR LIMITING EXPANSION OF SAID RUBBER CUSHION, AND END SURFACES ON INTERCOUPLING HOOKS AND SLIDABLY ENGAGEABLE ON COMPRESSION OF SAID DRAFT GEAR FOR AUTOMATICALLY INTERCOUPLING SAID HOOKS DURING SUCH COMPRESSION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |