US4095677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hoisting apparatus
Assignee: Arjo Instrument AB
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Filing: 1976-03-09
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Granted: 1978-06-20
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Expires: 1996-03-09
Abstract
Abstract A hoisting apparatus for lifting an object, a pressure cylinder and piston unit whose piston is secured to a connecting device fixed to the object to be lifted by a coupling device provided with guide sleeves mounted for vertical sliding movement on upright support posts for the connecting device and disposed adjacent the cylinder and piston unit.
Inventors
- 👤 Hans A. V. Johannson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:14
CPC Classifications
A; A47; A47K; A47K3/00; A47K3/02; A47K3/06; A61; A61G; A61G7/00; A61G7/10; A61G7/1001; A61G7/1003; A61G7/1013; A61G7/1019; A61G7/1049; A61G7/1057; B; B66; B66B; B66B9/00; B66B9/04; B66F; B66F19/00; B66F3/00; B66F3/24; B66F3/25; B66F3/36; A61G2200/00; A61G2200/30; A61G2200/32
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
201 words
A hoisting apparatus for hoisting or lifting an object disposed beside the apparatus, and including: a frame; two substantially vertical guide members fixedly mounted on the frame in spaced, parallel relationship; a vertically extendable power actuator device mounted on said frame between said guide members, and including a vertically movable shaft; at least two guide sleeves slidably received on and encircling each guide member, said guide sleeves being positively guided for movement along their respective guide members and being spaced vertically apart; a coupling member carried by each guide sleeve on the front side thereof for coupling to the object to be hoisted or lifted; a pair of vertical elements, one secured to the inner portion of the guide sleeves on each guide member; and a bridging element connecting the upper end portions of said vertical elements and extending horizontally therebetween, said vertical elements and said bridging element lying generally in a plane passing through the longitudinal axes of said vertical guide members, the guide sleeves on one guide member being positioned opposite and at the same level as the corresponding guide sleeves on the other guide member, and said bridging element being connected with the upper end of said shaft.
Claim 2
Dependent Claim
201 words
A hoisting apparatus for hoisting or lifting an object disposed beside the apparatus, and including: a frame; two substantially vertical guide members fixedly mounted on the frame in spaced, parallel relationship; a vertically extendable power actuator device mounted on said frame between said guide members, and including a vertically movable shaft; at least two guide sleeves slidably received on and encircling each guide member, said guide sleeves being positively guided for movement along their respective guide members and being spaced vertically apart; a coupling member carried by each guide sleeve on the front side thereof for coupling to the object to be hoisted or lifted; a pair of vertical elements, one secured to the inner portion of the guide sleeves on each guide member; and a bridging element connecting the upper end portions of said vertical elements and extending horizontally therebetween, said vertical elements and said bridging element lying generally in a plane passing through the longitudinal axes of said vertical guide members, the guide sleeves on one guide member being positioned opposite and at the same level as the corresponding guide sleeves on the other guide member, and said bridging element being connected with the upper end of said shaft.
Claim 3
Dependent Claim
17 words
A hoisting apparatus as recited in claim 1, wherein said power actuator device is a hydraulic cylinder.
Claim 4
Dependent Claim
25 words
A hoisting apparatus as recited in claim 1, wherein said guide members have a rectangular cross-section, and said guide sleeves have a corresponding rectangular cross-section.
Claim 5
Dependent Claim
40 words
A hoisting apparatus as recited in claim 3, wherein said rectangular guide members are provided with corner pieces forming sliding surfaces, and wherein said guide sleeves carry bearing elements on the interior thereof arranged to slidingly engage said corner pieces.
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) | 1981-06-19 | 1981-12-19 | 1982-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-19 | 1985-12-19 | 1986-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-19 | 1989-12-19 | 1990-06-20 | $7700.00 | Window Closed / Lapsed |