Patent US3686541A successfully refreshed from Google Patents.
US3686541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
A flexible resilient member for applying a clamping force to thyristor units
Assignee: General Electric Co
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Filing: 1971-07-19
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Granted: 1972-08-22
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Expires: 1991-07-19
Abstract
Abstract Disclosed is a cooled assembly for mounting and applying clamping pressure to a plurality of semiconductor rectifiers and for electrically connecting them in parallel. The pressure is applied via a pair of heat dissipating electrodes disposed on opposite sides of the rectifiers. Each electrode contains a plurality of heat dissipating fins. Clamping means including a tie bolt with leaf springs thereon apply the clamping forces through the heat dissipating electrodes to the rectifiers. Means are provided which coact with slots in the leaf springs for directing and maintaining the clamping force on the axes of the clamped rectifiers.
Inventors
- 👤 John P Livezey
- 👤 Daniel B Rosser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:40
CPC Classifications
H; H10; H10W; H10W72/00; H10W40/00; H10W40/60; H10W40/611; H10W90/00; H10W40/625
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
182 words
In a semiconductor rectifier assembly: a. at least one semiconductor rectifier device including a semiconductor body in a sealed housing between a pair of main electrodes having external first and second contact surfaces on opposite sides of the housing; b. means for mounting said device with its main electrodes held under high clamping pressure, said mounting means including one heat dissipating electrode abutting a contact surface of said rectifier device; c. force applying means for applying an axial clamping force through said heat dissipating electrode to said rectifier device, said force applying means including: i. a tension member; and ii. a flexible resilient member connected to said tension member, said resilient member including an opening having a major axis; and d. a tapered member movably seated in said opening and stationarily connected to said heat dissipating electrode at a point lying on the axis of said rectifier device, the major axis of said opening being oriented in a direction that enables said opening to move along its major axis with respect to the stationary tapered member upon flexure of said resilient means.
Claim 2
Dependent Claim
182 words
In a semiconductor rectifier assembly: a. at least one semiconductor rectifier device including a semiconductor body in a sealed housing between a pair of main electrodes having external first and second contact surfaces on opposite sides of the housing; b. means for mounting said device with its main electrodes held under high clamping pressure, said mounting means including one heat dissipating electrode abutting a contact surface of said rectifier device; c. force applying means for applying an axial clamping force through said heat dissipating electrode to said rectifier device, said force applying means including: i. a tension member; and ii. a flexible resilient member connected to said tension member, said resilient member including an opening having a major axis; and d. a tapered member movably seated in said opening and stationarily connected to said heat dissipating electrode at a point lying on the axis of said rectifier device, the major axis of said opening being oriented in a direction that enables said opening to move along its major axis with respect to the stationary tapered member upon flexure of said resilient means.
Claim 3
Dependent Claim
17 words
The semiconductor rectifier assembly as specified in claim 1 wherein said resilient means comprises a leaf spring.
Claim 4
Dependent Claim
42 words
A semiconductor rectifier assembly as specified in claim 2 wherein said opening is an elongated slot having two major walls oriented in a direction parallel to its major axis and wherein said walls contact points on the periphery of said tapered member.
Claim 5
Dependent Claim
19 words
In a semiconductor rectifier assembly as specified in claim 1 wherein said tapered member is of generally conical shape.
Claim 6
Dependent Claim
25 words
A semiconductor rectifier assembly as specified in claim 1 wherein said tapered member has a relatively large base, said base abutting said heat dissipating electrode.
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) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |