US3730025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gripper for unscrewing caps
Assignee: Individual
•
Filing: 1971-05-28
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Granted: 1973-05-01
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Expires: 1991-05-28
Abstract
Abstract A gripper for unscrewing caps from bottles and the like being substantially disc-shaped and palm-sized and having a conical socket therein. The gripper may comprise a resilient material and have a metal knife edge mounted to project into the socket.
Inventors
- 👤 W Monnerjahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:26
CPC Classifications
B; B67; B67B; B67B7/00; B67B7/18
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
90 words
A gripper for unscrewing caps comprising a palm-sized body defining a socket at least partially reduced conically such that the socket may tightly clamp a screw cap when placed thereover, said gripper having at least one elongated projection having a sharp edge substantially parallel to the generatrix of the conical socket surface which projects into the socket, said gripper having a portion outwardly bulging from said socket disposed opposite said elongated projection wherein the outwardly bulging porTion is delimitated from the rest of the socket surface by two sharp edges.
Claim 2
Dependent Claim
90 words
A gripper for unscrewing caps comprising a palm-sized body defining a socket at least partially reduced conically such that the socket may tightly clamp a screw cap when placed thereover, said gripper having at least one elongated projection having a sharp edge substantially parallel to the generatrix of the conical socket surface which projects into the socket, said gripper having a portion outwardly bulging from said socket disposed opposite said elongated projection wherein the outwardly bulging porTion is delimitated from the rest of the socket surface by two sharp edges.
Claim 3
Dependent Claim
72 words
A gripper for unscrewing caps comprising a palm-sized body defining a socket, at least partially reduced conically such that the socket may tightly clamp a screw cap when placed thereover, said gripper having at least one elongate projection having a sharp edge substantially parallel to the generatrix of the conical socket surface which projects into the socket, said gripper having a portion outwardly bulging from said socket disposed opposite said elongate projection.
Claim 4
Dependent Claim
72 words
A gripper for unscrewing caps comprising a palm-sized body defining a socket, at least partially reduced conically such that the socket may tightly clamp a screw cap when placed thereover, said gripper having at least one elongate projection having a sharp edge substantially parallel to the generatrix of the conical socket surface which projects into the socket, said gripper having a portion outwardly bulging from said socket disposed opposite said elongate projection.
Claim 5
Dependent Claim
61 words
A gripper for unscrewing caps comprising a palm-sized substantially planar disc-shaped body defining a cone-shaped socket passing entirely through said body, such that the socket may tightly clamp a screw cap when placed thereover, said gripper having at least one rigid elongate projection having a sharp edge substantially parallel to the generatrix to the conical surface which projects into the socket.
Claim 6
Dependent Claim
61 words
A gripper for unscrewing caps comprising a palm-sized substantially planar disc-shaped body defining a cone-shaped socket passing entirely through said body, such that the socket may tightly clamp a screw cap when placed thereover, said gripper having at least one rigid elongate projection having a sharp edge substantially parallel to the generatrix to the conical surface which projects into the socket.
Claim 7
Dependent Claim
27 words
A gripper according to claim 2 wherein a disc-shaped body consists of an annular disc made of plastic material and one or more inserted rigid metal projections.
Claim 8
Dependent Claim
27 words
A gripper according to claim 1 wherein the disc-shaped body consists of an annular disc made of plastic material and one or more inserted rigid metal projections.
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) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |