US3275170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic loading devices
Assignee: Diesel Equipment Ltd
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Filing: 1964-10-05
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Granted: 1966-09-27
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Expires: 1984-10-05
Abstract
No abstract record available.
Inventors
- 👤 Allister S Macrae
- 👤 John C Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:32
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/44; B60P1/4414; B60P1/4421
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A HYDRAULIC LIFTING APPARATUS FOR ATTACHMENT TO A RAISED FLOOR COMPRISING A PAIR OF SPACED APART VERTICAL POST MEMBERS FIXED TO SAID FLOOR, A PAIR OF SLIDE MEMBERS CARRIED BY AND ADAPTED TO SLIDE VERTICALLY RELATIVE TO SAID POSTS, A PLATFORM EXTENDING BETWEEN AND PIVOTALLY ATTACHED TO THE LOWER ENDS OF SAID SLIDE MEMBERS WHEREBY SAID PLATFORM MAY BE PIVOTED FROM A FIRST SUBSTANTIALLY HORIZONTAL POSITION TO A SECOND SUBSTANTIALLY VERTICAL POSITION, AND VICE VERSA, A HYDRAULIC RAM, FLEXIBLE LINKAGE
Claim 2
Dependent Claim
80 words
A HYDRAULIC LIFTING APPARATUS FOR ATTACHMENT TO A RAISED FLOOR COMPRISING A PAIR OF SPACED APART VERTICAL POST MEMBERS FIXED TO SAID FLOOR, A PAIR OF SLIDE MEMBERS CARRIED BY AND ADAPTED TO SLIDE VERTICALLY RELATIVE TO SAID POSTS, A PLATFORM EXTENDING BETWEEN AND PIVOTALLY ATTACHED TO THE LOWER ENDS OF SAID SLIDE MEMBERS WHEREBY SAID PLATFORM MAY BE PIVOTED FROM A FIRST SUBSTANTIALLY HORIZONTAL POSITION TO A SECOND SUBSTANTIALLY VERTICAL POSITION, AND VICE VERSA, A HYDRAULIC RAM, FLEXIBLE LINKAGE
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |