US3610674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slip hook
Assignee: Weser AG
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Filing: 1970-01-12
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Granted: 1971-10-05
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Expires: 1990-01-12
Abstract
Abstract A slip hook has a body portion having a general plane. A hook portion comprises a hooked first arm having a free tip and a second arm extending from the first arm. An arcuately curved abutment face is provided on the second arm. Latch means is provided on the body portion and mounting means mounts the hook portion on the body portion for pivotal movement about a pivot axis between two positions in one of which the abutment face is located within the outline of the body portion and the first arm projects substantially normal to the general plane and in the other of which the abutment face and the curved arm both project beyond the general plane and are located in a common plane defining with the general plane an obtuse angle. Actuating means is provided for moving the latch means between two positions in one of which it displaces the hook portion to the first-mentioned position.
Inventors
- 👤 Hans-Georg Janssen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:02
CPC Classifications
B; B63; B63B; B63B21/00; B63B21/56; B63B21/58; B63B21/60
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
171 words
A slip hook, comprising a body portion having a general plane; a hook portion comprising a hooked first arm having a free tip and a second arm extending from said first arm; an arcuately curved abutment face on said second arm; latch means on said body portion; mounting means mounting said hook portion on said body portion for pivotal movement about a pivot axis between a first position in which said abutment face is located within the outline of said body portion and said first arm projects substantially normal to said general plane, and a second position in which said abutment face and said first arm both project beyond said general plane and are located in a common plane defining with said general plane an obtuse angle; and actuating means mounted on said body portion and engaging said latch means for moving said latch means between two positions in one of which said actuating means forces said latch means to necessarily displace and hold said hook portion in said first position.
Claim 2
Dependent Claim
171 words
A slip hook, comprising a body portion having a general plane; a hook portion comprising a hooked first arm having a free tip and a second arm extending from said first arm; an arcuately curved abutment face on said second arm; latch means on said body portion; mounting means mounting said hook portion on said body portion for pivotal movement about a pivot axis between a first position in which said abutment face is located within the outline of said body portion and said first arm projects substantially normal to said general plane, and a second position in which said abutment face and said first arm both project beyond said general plane and are located in a common plane defining with said general plane an obtuse angle; and actuating means mounted on said body portion and engaging said latch means for moving said latch means between two positions in one of which said actuating means forces said latch means to necessarily displace and hold said hook portion in said first position.
Claim 3
Dependent Claim
16 words
A hook as defined in claim 1, wherein said actuating means is a hydraulic cylinder-and-piston unit.
Claim 4
Dependent Claim
28 words
A hook as defined in claim 1, wherein said abutment face extends substantially normal to said general plane when said hook portion is in said first position thereof.
Claim 5
Dependent Claim
32 words
A hook as defined in claim 1, said latch means comprising a recess; and wherein said abutment face extends into said recess when said hook portion is in said first position thereof.
Claim 6
Dependent Claim
35 words
A hook as defined in claim 1, said latch means comprising a guide face positioned and configurated so as to slidingly engage said abutment face during movement of said hook portion between said positions thereof.
Claim 7
Dependent Claim
41 words
A hook as defined in claim 5, said latch means being pivotable and having a nose provided with said guide face; and wherein said actuating means comprises a cylinder-and-piston unit connected with said latch means in the region of said nose.
Claim 8
Dependent Claim
44 words
A hook as defined in claim 2, said unit being extendable between a minimum retracted length and a maximum extended length, and being mounted to said body portion for pivotal movement about an axis intersecting said unit substantially midway of said maximum extended length.
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) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |