US3690713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gripping tool
Assignee: Licentia Patent Verwaltungs GmbH
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Filing: 1971-04-27
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Granted: 1972-09-12
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Expires: 1991-04-27
Abstract
Abstract A gripper with a muzzle-shaped opening to receive loops on control rods and fuel elements of a nuclear reactor and guide these loops to a slit where they can be gripped by a rotatable gripping hook. An inset having an end wall and spaced walls projecting in the same direction from the end wall is designed to be slipped into engagement within the slit. In a first position the spaced walls project in the slit toward the muzzle-shaped opening to restrict the slit to the reception of a relatively narrow loop on a control rod. In a second position the spaced walls are reversed in the slit so that the full width of the slit toward the muzzle-shaped opening is available to receive the relatively wide loop on a fuel element.
Inventors
- 👤 Ulrich Ristow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:54
CPC Classifications
G; G21; G21C; G21C19/00; G21C19/02; G21C19/10; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S294/00; Y10S294/902; Y10S294/906
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
93 words
In a gripper including a head piece having a muzzle-shaped opening to receive article transporting loops of different shapes and guide these loops to a slit portion at the interior of the muzzle-shaped opening where the loops can be releasably held by a movable gripping hook, the improvement comprising: an insert engageable in a plurality of positions within said slit, said insert being formed so that in each of its positions it enables only loops of one respective shape to be introduced into the slit portion to be held by the gripping hook.
Claim 2
Dependent Claim
93 words
In a gripper including a head piece having a muzzle-shaped opening to receive article transporting loops of different shapes and guide these loops to a slit portion at the interior of the muzzle-shaped opening where the loops can be releasably held by a movable gripping hook, the improvement comprising: an insert engageable in a plurality of positions within said slit, said insert being formed so that in each of its positions it enables only loops of one respective shape to be introduced into the slit portion to be held by the gripping hook.
Claim 3
Dependent Claim
35 words
An arrangement as defined in claim 1 wherein said insert includes guide means and said head piece includes associated guide means for receiving said insert guide means when said insert is engaged in the slit.
Claim 4
Dependent Claim
27 words
An arrangement as defined in claim 2 wherein said insert includes an end wall and spaced parallel walls extending in the same direction from said end wall.
Claim 5
Dependent Claim
51 words
An arrangement as defined in claim 3 wherein, for a first position of said insert, said parallel walls of said insert extend toward the muzzle-shaped opening to provide a restricted opening therebetween for the reception of a transporting loop having a width no greater than the space between said parallel walls.
Claim 6
Dependent Claim
31 words
An arrangement as defined in claim 4 wherein, in said first position, said end wall is an abutment wall for a transporting loop received in the space between said parallel walls.
Claim 7
Dependent Claim
43 words
An arrangement as defined in claim 3 wherein, for a second position of said insert, said parallel walls of said insert extend away from the muzzle-shaped opening and said end wall is an abutment wall for a transporting loop received in the slit.
Claim 8
Dependent Claim
60 words
An arrangement as defined in claim 1 wherein the slit portion has a circular cross section and said insert is shaped to rotate in said slit portion, said insert having cutout portions on the periphery thereof whereby different shaped transporting loops are selectively receivable in the loop receiving portion depending on the orientation of said insert in said slit portion.
References Cited (Backward Citations)
DE1098175B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |