US3871697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load take-up apparatus for lifting devices
Assignee: SALZGITTER KOCKS A JOINT STOCK Co OF JAPAN GmbH
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Filing: 1973-06-07
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Granted: 1975-03-18
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Expires: 1993-06-07
Abstract
Abstract Load take-up apparatus for lifting devices, more particularly spreaders for container lifting devices with retaining means which bear upon and grip the load, more particularly rotating bolts which are disposed at the corners of the spreader and are lockable in fittings of the container wherein the retaining means, more particularly the rotating bolts are supported on the load take-up device in resilient, yielding manner.
Inventors
- 👤 Gert Bechtloff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:35
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/62; B66C1/66; B66C1/663
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
110 words
In a shock absorbing load take-up apparatus for containers having a supporting frame and rotatable bolts disposed thereon and adapted to be inserted into corresponding fittings in the container, the improved rotatable bolt mounting comprising: a. an outer housing attached to said supporting frame, b. an inner housing attached to said rotatable bolt and coaxially mounted within said outer housing so as to slide relatively tHereto in a direction parallel to the longitudinal axis of said outer housing, c. resilient buffer means interposed between one end of said inner housing and one end of said outer housing, and d. means to prevent relative rotation between said inner and outer housings.
Claim 2
Dependent Claim
110 words
In a shock absorbing load take-up apparatus for containers having a supporting frame and rotatable bolts disposed thereon and adapted to be inserted into corresponding fittings in the container, the improved rotatable bolt mounting comprising: a. an outer housing attached to said supporting frame, b. an inner housing attached to said rotatable bolt and coaxially mounted within said outer housing so as to slide relatively tHereto in a direction parallel to the longitudinal axis of said outer housing, c. resilient buffer means interposed between one end of said inner housing and one end of said outer housing, and d. means to prevent relative rotation between said inner and outer housings.
Claim 3
Independent Claim
28 words
A device as claimed in 1 wherein the inner housing supports all actuating and monitoring elements such as electric and hydraulic drives, switching apparatus and safety trip circuits.
Claim 4
Dependent Claim
24 words
A device as claimed in claim 1 wherein a downwardly extending tracer pin, adjoined by a flexible conduit, is disposed in the inner housing.
Claim 5
Dependent Claim
14 words
Apparatus as claimed in claim 1 wherein said resilient buffer means is under prestress.
Claim 6
Dependent Claim
27 words
The improved load take-up device of claim 1 wherein said resilient buffer means comprises a cellular plastic material, such as polyurethane, having a high work absorption capacity.
Claim 7
Dependent Claim
17 words
The improved load take-up device of claim 1 wherein said resilient buffer means comprises an hydraulic damper.
Claim 8
Dependent Claim
48 words
The improved load take-up device of claim 1 wherein said means to prevent relative rotation comprises: a. an opening in said outer housing having a polygonal cross section, and b. a correspondingly polygonal extension attached to said inner housing and extending through said opening in said outer housing.
Claim 9
Dependent Claim
31 words
The improved load take-up device of claim 7 wherein an actuating arm for causing rotary movement of said rotatable bolt is attached to said extension by means of a spherical bearing.
Claim 10
Dependent Claim
18 words
The improved load take-up device of claim 1 wherein said bolt is rotatably attached to said inner housing.
Claim 11
Dependent Claim
31 words
The improved load take-up device of claim 1 wherein an actuating arm for causing rotating movement of said rotatable bolt is attached to said bolt by means of a spherical bearing.
Claim 12
Dependent Claim
19 words
The improved load take-up device of claim 1 wherein said inner and outer housings are generally cylindrical in shape.
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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |