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US3668477A Expired / Lapsed US ⏱️ 0.0 years remaining

Mounting bracket for semiconductor rectifiers to heat sinks

Assignee: PROCESS ELECTRONICS Corp
•
Filing: 1970-11-10
•
Granted: 1972-06-06
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Expires: 1990-11-10
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Abstract

Abstract This disclosure pertains to a rectifier system which includes a plurality of diodes in the secondary circuit of a main transformer to provide rectification for the energy flowing therefrom, and a plurality of semi-conductive rectifier devices for controlling current to the primary windings thereto. The diodes are stud mounted and adapted to be self locked between a pair of channel portions of an electrically conductive heat sink, whereas the semi-conductive rectifier devices are stud mounted to extending flange portions of a novel heat sink bracket. The bracket is comprised of a base portion wherefrom is extended from one surface an extending flange. A bore is disposed in the flange portion, a preselected distance from the base, for self lockingly receiving the semi-conductive rectifier device. The bracket itself is fastened to a main heat sink by means of an epoxy which is heat conductive and electrically insulated.

Inventors

  • 👤 Lynn R Zellmer

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 21:30
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/60; H10W40/611; H10W90/00; H10W40/20; H10W40/231; H10W40/235; H10W40/237

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 105 words
In combination, a semiconductor device and a bracket for stud mounting said semiconductor device having a radially extending hexagonal shoulder, said bracket comprising: a base section having a surface for fastening to a heat sink; a flange connected to said base section on an opposite surface; and a bore, disposed in said flange, a preselected distance from said base receiving and self locking said semiconductor device thereto, said preselected distance being slightly larger than the radial distance from the center of said semiconductor device to the flats as defined by the hexagonal shouldeR but sufficiently small to preclude rotation of the semiconductor device during mounting.
Claim 2
Dependent Claim 105 words
In combination, a semiconductor device and a bracket for stud mounting said semiconductor device having a radially extending hexagonal shoulder, said bracket comprising: a base section having a surface for fastening to a heat sink; a flange connected to said base section on an opposite surface; and a bore, disposed in said flange, a preselected distance from said base receiving and self locking said semiconductor device thereto, said preselected distance being slightly larger than the radial distance from the center of said semiconductor device to the flats as defined by the hexagonal shouldeR but sufficiently small to preclude rotation of the semiconductor device during mounting.
Claim 3
Dependent Claim 38 words
The combination as set forth in claim 1, said bracket being mounted on a heat sink wherein the surface of said base section is fastened to the heat sink by means of an electrically insulated, heat conductive epoxy.
Claim 4
Dependent Claim 17 words
The bracket, as set forth in claim 1, wherein said flange is perpendicularly connected to said base.
Claim 5
Dependent Claim 19 words
The bracket, as set forth in claim 3, wherein said flange is offset from the center of said base.
Claim 6
Dependent Claim 18 words
The bracket, as set forth in claim 1, wherein said flange portion further supports a control circuit board.
Claim 7
Dependent Claim 35 words
The combination as set forth in claim 2, wherein any heat from the semiconductor device is transfered via said flange portion to said base section, and across said heat conductive epoxy to the heat sink.

References Cited (Backward Citations)

US2994203A Cited
US3236296A Cited
US3274449A Cited
US3182115A Cited
US3268770A Cited
US3253646A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-06-06 1975-12-06 1976-06-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-06-06 1979-12-06 1980-06-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-06-06 1983-12-06 1984-06-06 $7700.00 Window Closed / Lapsed

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