US4348687A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clamping assembly for thyristor column
Assignee: Siemens AG
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Filing: 1980-02-26
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Granted: 1982-09-07
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Expires: 2000-02-26
Abstract
Abstract A stack or column of thyristors and cooling capsules has two end pieces and a clamping frame of plastic surrounding the stack and the end pieces. The frame consists of two end-to-end half-shells having recesses in the outer surfaces into which, after assembly, turns of glass fiber are wound to form bundles which are then cast over with plastic. A clamping element is screwed into each of the end pieces, at least one of which is a resilient power accumulator. Since the clamping device consists of insulating plastic and is curved in the regions of the stack ends, a space-saving design is obtained.
Inventors
- 👤 Roman Keller
- 👤 Gunter Kliesch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:08
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/60; H10W40/611; H10W40/613; H10W90/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
178 words
In a thyristor column having a stack of thyristors and cooling capsules, two end pieces, each end piece having a clamping element, and a frame-like clamping device surrounding the stack the end pieces in an electrically insulating manner, and each clamping element resting on an apposite end of the stack and at least one of the clamping elements being resilient, the improvement comprising: the frame-like clamping device having two identical half-shells of insulating material with continuous outer surfaces and end faces which meet each other, providing a smooth transition of outer surfaces; each of the two half-shells having at least one straight part and at least one curved part and having two lateral surfaces; each of the two end pieces lying in an approximately form-fitting manner in a curved part of the clamping device; at least one groove being arranged on at least parts of the outer surface of each half-shell and parallel to the lateral surfaces thereof; and a bundle comprising more than one turn of fibers wound in the groove and embedded in a casting compound.
Claim 2
Dependent Claim
178 words
In a thyristor column having a stack of thyristors and cooling capsules, two end pieces, each end piece having a clamping element, and a frame-like clamping device surrounding the stack the end pieces in an electrically insulating manner, and each clamping element resting on an apposite end of the stack and at least one of the clamping elements being resilient, the improvement comprising: the frame-like clamping device having two identical half-shells of insulating material with continuous outer surfaces and end faces which meet each other, providing a smooth transition of outer surfaces; each of the two half-shells having at least one straight part and at least one curved part and having two lateral surfaces; each of the two end pieces lying in an approximately form-fitting manner in a curved part of the clamping device; at least one groove being arranged on at least parts of the outer surface of each half-shell and parallel to the lateral surfaces thereof; and a bundle comprising more than one turn of fibers wound in the groove and embedded in a casting compound.
Claim 3
Dependent Claim
16 words
A thyristor column in accordance with claim 1 in which the insulating material being a plastic.
Claim 4
Dependent Claim
15 words
A thyristor column in accordance with claim 2 in which the fibers being glass fibers.
Claim 5
Dependent Claim
15 words
A thyristor column in accordance with claim 2 in which the fibers comprises carbon fibers.
Claim 6
Dependent Claim
16 words
A thyristor column in accordance with claim 1, in which each half-shell has two curved parts.
Claim 7
Dependent Claim
21 words
A thyristor column in accordance with any one of claims 1 to 5 in which the casting compound comprises a plastic.
Claim 8
Dependent Claim
29 words
A thyristor column in accordance with claim 5 in which each half-shell has two curved parts in the shape of circular arcs, each arc length comprising a quarter circle.
Claim 9
Dependent Claim
26 words
A thyristor column in accordance with any one of claims 1, 5 or 7 in which each groove is in the curved parts of clamping device.
Claim 10
Dependent Claim
25 words
A thyristor column in accordance with any one of claims 1, 5 or 7, in which each of the two half-shells has two parallel grooves.
Claim 11
Dependent Claim
43 words
A thyristor column in accordance with any one of claims 1, 5 or 7, and further comprising: at least one guide channel on the inside surface of the clamping device, the guide channel running parallel to the lateral surfaces of the clamping device.
Claim 12
Dependent Claim
30 words
A thyristor column in accordance with claim 10 in which the guide channel is located midway between the two lateral surfaces of the clamping device and comprises a wall portion.
Claim 13
Dependent Claim
28 words
A thyristor column in accordance with claim 10 in which the surface area on the outside of the wall portion over the guide channel is free of fibers.
Claim 14
Dependent Claim
41 words
A thyristor column in accordance with claim 12 and further comprising a cutout in the wall portion of each clamping device, via which the clamping elements are accessible, each cutout centered in the curved parts and between the two lateral surfaces.
Claim 15
Dependent Claim
17 words
A thyristor column in accordance with claim 1 in which each groove has a rectangular cross section.
Claim 16
Dependent Claim
20 words
A thyristor column in accordance with claim 1 in which each groove in the clamping device has a U-shaped cross-section.
Claim 17
Dependent Claim
20 words
A thyristor column in accordance with claim 1 in which each groove in the clamping device has a trapezoidal cross-section.
Claim 18
Dependent Claim
23 words
A thyristor column in accordance with claim 1 in which the bottom of each groove in the clamping device having a serrated cross-section.
Claim 19
Dependent Claim
30 words
A thyristor column in accordance with claim 1 in which the clamping device has at least one cutout at a predetermined point in the outside surface over the guide channel.
Claim 20
Dependent Claim
35 words
A thyristor column in accordance with claim 1 and further comprising: a two point bearing on each clamping element, each bearing resting on the associated end face of the stack of thyristors and cooling capsules.
References Cited (Backward Citations)
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Cited
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US3566958A
Cited
US3784885A
Cited
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Cited
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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) | 1985-09-06 | 1986-03-08 | 1986-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-06 | 1990-03-08 | 1990-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-06 | 1994-03-08 | 1994-09-07 | $7700.00 | Window Closed / Lapsed |