US4176242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diode housing
Assignee: Sundstrand Corp
•
Filing: 1978-01-16
•
Granted: 1979-11-27
•
Expires: 1998-01-16
Abstract
Abstract A diode mountable on the rotor shaft of an electrical machine, such as a generator, with an insulating member between the stem and body of the diode having a strength sufficient to resist bending moment on the stem of the diode resulting from centrifugal force and prevent fracture of the insulating member.
Inventors
- 👤 Phillip S. Linscott, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:52
CPC Classifications
H; H02; H02K; H02K11/00; H02K11/04; H02K11/042; H10; H10W; H10W90/00; Y; Y10; Y10S; Y10S257/00; Y10S257/926
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
201 words
A dynamo-electric machine comprising, in combination, a rotatable shaft with a maximum rotational speed and having a mounting member extending radially thereof, a diode having a body and a stem extending therefrom with a disc of glass-type insulating material positioned therebetween, a mounting member extending from said diode body in a direction opposite from said stem and connected to said mounting member to have said diode in axially parallel relation with said shaft, an electrical lead connected to the stem at a mounting hole in the stem by attaching means, and said disc having a thickness to prevent fracture by a bending moment imparted to the stem resulting from centrifugal force of the stem and connected structure, and said thickness having a minimum value of t min in inches, in the equation: t.sub.min =6.886×10.sup.-8 ×W×N.sup.2 ×R×L/D.sup.1/2 wherein W=weight of the stem and parts supported thereby measured in grams; N=maximum rotational speed of the rotatable shaft in revolutions per second; R=radial distance from centerline of the rotatable shaft to the centerline of the stem in inches; L=axial length of stem from an exposed face of the disc to the centerline of the mounting hole in inches; and D=diameter of stem in inches.
Claim 2
Dependent Claim
201 words
A dynamo-electric machine comprising, in combination, a rotatable shaft with a maximum rotational speed and having a mounting member extending radially thereof, a diode having a body and a stem extending therefrom with a disc of glass-type insulating material positioned therebetween, a mounting member extending from said diode body in a direction opposite from said stem and connected to said mounting member to have said diode in axially parallel relation with said shaft, an electrical lead connected to the stem at a mounting hole in the stem by attaching means, and said disc having a thickness to prevent fracture by a bending moment imparted to the stem resulting from centrifugal force of the stem and connected structure, and said thickness having a minimum value of t min in inches, in the equation: t.sub.min =6.886×10.sup.-8 ×W×N.sup.2 ×R×L/D.sup.1/2 wherein W=weight of the stem and parts supported thereby measured in grams; N=maximum rotational speed of the rotatable shaft in revolutions per second; R=radial distance from centerline of the rotatable shaft to the centerline of the stem in inches; L=axial length of stem from an exposed face of the disc to the centerline of the mounting hole in inches; and D=diameter of stem in inches.
References Cited (Backward Citations)
US3274456A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-11-26 | 1983-05-28 | 1983-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-26 | 1987-05-28 | 1987-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-26 | 1991-05-28 | 1991-11-27 | $7700.00 | Window Closed / Lapsed |