Patent US3630563A successfully refreshed from Google Patents.
US3630563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-locking gripping head
Assignee: W AND M AUTOMATION KARL MULLER F
•
Filing: 1970-03-25
•
Granted: 1971-12-28
•
Expires: 1990-03-25
Abstract
Abstract A power-operated gripping head for lifting workpieces includes two pivotally mounted coacting jaws which are moved toward and away from each other by a pair of pivotal levers forming with a linearly movable actuator a toggle linkage which will lock the jaws in closed position.
Inventors
- 👤 Bruno Jacksch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:58
CPC Classifications
B; B66; B66C; B66C3/00; B66C3/14; B66C3/16
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
187 words
In a gripping head for lifting, transporting and depositing workpieces, the combination including a mounting plate, a pair of spaced parallel shafts rotatably mounted on said plate, a pair of coacting gripping jaws attached respectively to said shafts for pivotal movement toward and away from each other, a pair of locking levers connected respectively with said shafts for rotating said jaws, power actuator means connected with said mounting plate and including a linearly reciprocable rod positioned for movement in a plane disposed between and normal to the plane of said pair of shafts, a pair of links each connected pivotally at one end to said rod the other end of each link being connected pivotally to a respective one of said locking levers at points spaced from said shafts, said links and locking levers comprising toggle linkage means whereby movement of the rod in one directiOn will open the jaws and movement of the rod in the opposite direction will close the jaws and said links when said jaws are closed will be disposed substantially in a plane normal to the plane of movement of the rod.
Claim 2
Dependent Claim
187 words
In a gripping head for lifting, transporting and depositing workpieces, the combination including a mounting plate, a pair of spaced parallel shafts rotatably mounted on said plate, a pair of coacting gripping jaws attached respectively to said shafts for pivotal movement toward and away from each other, a pair of locking levers connected respectively with said shafts for rotating said jaws, power actuator means connected with said mounting plate and including a linearly reciprocable rod positioned for movement in a plane disposed between and normal to the plane of said pair of shafts, a pair of links each connected pivotally at one end to said rod the other end of each link being connected pivotally to a respective one of said locking levers at points spaced from said shafts, said links and locking levers comprising toggle linkage means whereby movement of the rod in one directiOn will open the jaws and movement of the rod in the opposite direction will close the jaws and said links when said jaws are closed will be disposed substantially in a plane normal to the plane of movement of the rod.
Claim 3
Dependent Claim
41 words
The invention defined in claim 1, wherein said power actuator means includes means for moving said linearly reciprocable rod in said opposite direction slightly past the position in which said links are disposed in said normal plane to lock said jaws.
Claim 4
Dependent Claim
27 words
The invention defined in claim 1, wherein said power actuator means comprises a hydraulic cylinder and said linearly reciprocable rod includes a piston movable in said cylinder.
Claim 5
Dependent Claim
35 words
The invention defined in claim 1, wherein said linearly movable rod includes a slotted member, and one end of each of said pair of links is pivotally connected at spaced axes with said slotted member.
Claim 6
Dependent Claim
40 words
The invention defined in claim 1, wherein each of said pair of locking levers is connected to a respective shaft axially spaced from a respective gripping jaw attached to said shaft, whereby torsional force may be exerted in said shaft.
References Cited (Backward Citations)
US2817254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |