US4936743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically controlled gripper tool
Assignee: Siemens AG
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Filing: 1989-03-16
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Granted: 1990-06-26
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Expires: 2009-03-16
Abstract
Abstract A hydraulically controlled gripper tool for positioning, mounting and retrieving parts in poorly accessible locations and areas, such as in nuclear power plants, includes a support body. A pivot shaft is supported on the support body in a given plane. A bracket is supported on the pivot shaft and a tilting shaft is supported on the bracket in the given plane. A basic tool body is supported on the tilting shaft. An actuation cylinder is disposed on the basic tool body and gripper jaws are connected to the actuation cylinder for closing and opening the gripper jaws. Another cylinder is rotatably disposed on the support body with a piston guided in the other cylinder and a universal joint connected to the piston. A tilting lever has one end rotatably connected to the universal joint and another end locked on the basic tool body for tilting the gripper jaws. A further cylinder is rotatably disposed on the support body and another piston is guided in the further cylinder. A joint eccentrically disposed on the bracket is connected to the other piston for pivoting the gripper jaws.
Inventors
- 👤 Johannes Stoss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:14
CPC Classifications
B; B25; B25J; B25J17/00; B25J17/02; B25J17/0258; B25J5/00; B25J9/00; B25J9/10; B25J9/14; G; G21; G21C; G21C17/00; G21C17/003; G21C17/013; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
177 words
Hydraulically controlled gripper tool for positioning, mounting and retrieving parts in poorly accessible locations and areas, comprising: (a) a support body, a pivot shaft supported on said support body in a given plane, a bracket supported on said pivot shaft, a tilting shaft supported on said bracket in said given plane, a basic tool body supported on said tilting shaft, an actuation cylinder and a gripper jaw disposed on said basic tool body, and a further gripper jaw connected to said actuation cylinder for closing and opening said gripper jaws; (b) another cylinder rotatably disposed on said support body, a piston guided in said other cylinder, a universal joint connected to said piston, and a tilting lever having one end rotatably connected to said universal joint and another end locked on said basic tool body for tilting said gripper jaws; and (c) a further cylinder rotatably disposed on said support body, another piston guided in said further cylinder, and a joint eccentrically disposed on said bracket and connected to said other piston for pivoting said gripper jaws.
Claim 2
Dependent Claim
177 words
Hydraulically controlled gripper tool for positioning, mounting and retrieving parts in poorly accessible locations and areas, comprising: (a) a support body, a pivot shaft supported on said support body in a given plane, a bracket supported on said pivot shaft, a tilting shaft supported on said bracket in said given plane, a basic tool body supported on said tilting shaft, an actuation cylinder and a gripper jaw disposed on said basic tool body, and a further gripper jaw connected to said actuation cylinder for closing and opening said gripper jaws; (b) another cylinder rotatably disposed on said support body, a piston guided in said other cylinder, a universal joint connected to said piston, and a tilting lever having one end rotatably connected to said universal joint and another end locked on said basic tool body for tilting said gripper jaws; and (c) a further cylinder rotatably disposed on said support body, another piston guided in said further cylinder, and a joint eccentrically disposed on said bracket and connected to said other piston for pivoting said gripper jaws.
Claim 3
Dependent Claim
54 words
Gripper tool according to claim 1, including a lever configuration, and a pivot point on said basic tool body, one of said gripper jaws being connected to said basic tool body and the other of said gripper jaws being supported at said pivot point and connected to said actuation cylinder through said lever configuration.
Claim 4
Dependent Claim
26 words
Gripper tool according to claim 1, wherein said support body is a housing surrounding at least said actuation cylinder, said other cylinder and said further cylinder.
Claim 5
Dependent Claim
19 words
Gripper tool according to claim 1, including retaining means disposed on said support body for coupling to a rod.
Claim 6
Dependent Claim
20 words
Gripper tool according to claim 1, wherein said gripper jaws are disposed at least substantially perpendicular to said given plane.
Claim 7
Dependent Claim
23 words
Gripper tool according to claim 1, wherein one of said gripper jaws is a pointed wedge rigidly disposed on said basic tool body.
Claim 8
Dependent Claim
19 words
Gripper tool according to claim 1, including retaining means disposed on said support body for coupling to a vehicle.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-25 | 1993-12-25 | 1994-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-25 | 1997-12-25 | 1998-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-25 | 2001-12-25 | 2002-06-26 | $7700.00 | Window Closed / Lapsed |