US3768666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telescoping-type stacker crane
Assignee: SN OPERATING Co Inc
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Filing: 1972-04-20
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Granted: 1973-10-30
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Expires: 1992-04-20
Abstract
Abstract A stacker crane comprising a multi-section telescoping or collapsible mast connected for rotation about its vertical axis to the underside of a trolley of an overhead crane and having a load carriage movable vertically along the lower section, power means for moving the respective sections of the mast and the load carriage vertically in a predetermined sequence comprising a flexible member connected to a take-up means at the top of the mast and subsequently reeved about pulley means connected to the upper end of the movable mast sections and the load carriage with the intermediate reaches reeved about pulleys at the top of the mast and having its other end connected to the upper end of the mast.
Inventors
- 👤 K Pamer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:08
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A device of the class described comprising: a movable overhead support; a first mast section secured to said overhead support and extending downwardly therefrom; a second mast section operatively connected to said first mast section for vertical movement relative thereto and extendable relative to the lower end of said first mast section; load carriage means of greater weight than said second mast section operatively connected to said second mast section for vertical movement relative thereto; and flexible means operatively connected to said overhead support than successively reeved about pulley means connected to said load carrige means, pulley means connected to said overhead support, pulley means connected to said second mast section, and thereafter being connected to a takeup means.
Claim 2
Independent Claim
119 words
A device of the class described comprising: a movable overhead support; a first mast section secured to said overhead support and extending downwardly therefrom; a second mast section operatively connected to said first mast section for vertical movement relative thereto and extendable relative to the lower end of said first mast section; load carriage means of greater weight than said second mast section operatively connected to said second mast section for vertical movement relative thereto; and flexible means operatively connected to said overhead support than successively reeved about pulley means connected to said load carrige means, pulley means connected to said overhead support, pulley means connected to said second mast section, and thereafter being connected to a takeup means.
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) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |