US3285573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor block
Assignee: Hitachi Ltd
•
Filing: 1963-08-26
•
Granted: 1966-11-15
•
Expires: 1983-08-26
Abstract
No abstract record available.
Inventors
- 👤 Hanawa Toshio
- 👤 Tokunaga Takeshi
- 👤 Iwata Yasuhiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:51
CPC Classifications
B; B66; B66D; B66D3/00; B66D3/18; B66D2700/00; B66D2700/02; B66D2700/026
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
225 words
A MOTOR BLOCK FOR LIFTING GOODS BY MEANS OF A LINK CHAIN OPERATED BY A SPROCKET MEANS CONNECTED TO A DRIVING MOTOR COMPRISING A CHAIN, SPROCKET MEANS FOR ENGAGING SAID CHAIN, AND A DRIVING MOTOR, FIRST AND SECOND BASE SECURED TO ONE ANOTHER IN CLOSELY SPACED PARALLEL RELATIONSHIP, SAID SECOND BASE PLATE HAVING AN APERTURE THEREIN, SAID DRIVING MOTOR BEING SECURELY MOUNTED ON SAID FIRST BASE PLATE AND HAVING A HOUSING PORTION EXTENDING THROUGH SAID APERTURE IN SAID SECOND BASE PLATE, GEAR CASE MEANS INCLUDING A REDUCTION GEAR DEVICE SECURED TO SAID FIRST BASE PLATE IN DRIVEN ENGAGEMENT WITH SAID DRIVING MOTOR, A ROTATABLE SHAFT MOUNTED BETWEEN SAID FIRST AND SECOND BASE PLATES AND CONNECTED TO SAID REDUCTION GEAR DEVICE SO AS TO BE DRIVEN BY SAID MOTOR, SAID SPROCKET MEANS BEING MOUNTED ON SAID ROTATABLE SHAFT, AND ACTUATING MEANS FOR SELECTIVELY ENERGIZING SAID DRIVING MOTOR, BEARING MEANS MOUNTED IN SAID FIRST BASE PLATE, SAID DRIVING MOTOR HAVING A DRIVE SHAFT SUPPORTED WITHIN SAID BEARING MEANS WITH ONE END OF SAID HOUSING MEANS BEING FASTENED TO SAID FIRST BASE PLATE AND THE OTHER END THEREOF EXTENDING THROUGH SAID APERTURE IN SAID SECOND BASE PLATE, SAID GEAR CASE MEANS FURTHER INCLUDING SUPPORT MEANS FOR SAID REDUCTION GEAR DEVICE INCLUDING A PLURALITY OF INTERSECTING RIBS, SAID GEAR REDUCTION DEVICE INCLUDING BEARING MEANS MOUNTED ON SAID INTERSECTING RIBS,
Claim 2
Dependent Claim
225 words
A MOTOR BLOCK FOR LIFTING GOODS BY MEANS OF A LINK CHAIN OPERATED BY A SPROCKET MEANS CONNECTED TO A DRIVING MOTOR COMPRISING A CHAIN, SPROCKET MEANS FOR ENGAGING SAID CHAIN, AND A DRIVING MOTOR, FIRST AND SECOND BASE SECURED TO ONE ANOTHER IN CLOSELY SPACED PARALLEL RELATIONSHIP, SAID SECOND BASE PLATE HAVING AN APERTURE THEREIN, SAID DRIVING MOTOR BEING SECURELY MOUNTED ON SAID FIRST BASE PLATE AND HAVING A HOUSING PORTION EXTENDING THROUGH SAID APERTURE IN SAID SECOND BASE PLATE, GEAR CASE MEANS INCLUDING A REDUCTION GEAR DEVICE SECURED TO SAID FIRST BASE PLATE IN DRIVEN ENGAGEMENT WITH SAID DRIVING MOTOR, A ROTATABLE SHAFT MOUNTED BETWEEN SAID FIRST AND SECOND BASE PLATES AND CONNECTED TO SAID REDUCTION GEAR DEVICE SO AS TO BE DRIVEN BY SAID MOTOR, SAID SPROCKET MEANS BEING MOUNTED ON SAID ROTATABLE SHAFT, AND ACTUATING MEANS FOR SELECTIVELY ENERGIZING SAID DRIVING MOTOR, BEARING MEANS MOUNTED IN SAID FIRST BASE PLATE, SAID DRIVING MOTOR HAVING A DRIVE SHAFT SUPPORTED WITHIN SAID BEARING MEANS WITH ONE END OF SAID HOUSING MEANS BEING FASTENED TO SAID FIRST BASE PLATE AND THE OTHER END THEREOF EXTENDING THROUGH SAID APERTURE IN SAID SECOND BASE PLATE, SAID GEAR CASE MEANS FURTHER INCLUDING SUPPORT MEANS FOR SAID REDUCTION GEAR DEVICE INCLUDING A PLURALITY OF INTERSECTING RIBS, SAID GEAR REDUCTION DEVICE INCLUDING BEARING MEANS MOUNTED ON SAID INTERSECTING RIBS,
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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) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |