US4039744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical bus support
Assignee: Schneider Electric USA Inc
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Filing: 1976-04-26
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Granted: 1977-08-02
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Expires: 1996-04-26
Abstract
Abstract A three part bus support for supporting a cylindrical tubular bus on an insulator comprises a base and two identical end portions. Each end portion has a hook portion defining an opening and a base portion which is connectible to either of the opposite ends of the base at one of two wall portions formed along opposed ends of the base. When the end portions are connected to the base, the openings defined by the hooks are aligned for receiving a tubular bus. A projection of one end of the base portion of each end portion is tangent to an inner surface of the hook portion where the bus exerts a force caused by wind, and the base is asymmetrical about a longitudinal axis passing through the opposite ends of the base to provide improved locations of fulcrums of lever arms of the wind forces. A pair of leaf springs oriented to prevent abrasion of the bus and received in respective recesses in inner sides of enlarged ends of the hook portions serve as static eliminators to insure that the bus maintains electrical continuity with the support structure during vibration to prevent radio interference problems. The outer surfaces of the hook portions are rounded and smooth to provide improved corona characteristics.
Inventors
- 👤 James J. Seaquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:23
CPC Classifications
H; H01; H01B; H01B17/00; H01B17/14; H01B17/18
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
107 words
A bus support for a cylindrical electrical bus comprising a three-part casting including a base adapted to be secured to an insulating support structure and two spaced end portions assembled on respective opposite ends of the base so as to extend upwardly from the base, the end portions having respective substantially circular openings therethrough which are axially aligned with each other for slidably receiving and retaining the bus, and connecting means connecting the end portions to the base, including outwardly directed, horizontally aligned flanges at the opposite ends of the base, respectively, and complementary grooves in respective base portions of the end portions receiving the flanges, respectively.
Claim 2
Dependent Claim
107 words
A bus support for a cylindrical electrical bus comprising a three-part casting including a base adapted to be secured to an insulating support structure and two spaced end portions assembled on respective opposite ends of the base so as to extend upwardly from the base, the end portions having respective substantially circular openings therethrough which are axially aligned with each other for slidably receiving and retaining the bus, and connecting means connecting the end portions to the base, including outwardly directed, horizontally aligned flanges at the opposite ends of the base, respectively, and complementary grooves in respective base portions of the end portions receiving the flanges, respectively.
Claim 3
Dependent Claim
36 words
A bus support as claimed in claim 1 wherein the end portions have smooth and curved outer surfaces for limiting the occurrence of corona when the bus support is used to support a high voltage bus.
Claim 4
Dependent Claim
44 words
A bus support as claimed in claim 1 wherein the openings are defined by respective hook portions extending laterally and upwardly from respective base portions of the end portions, each hook portion partially encircling a bus when a bus is supported by the support.
Claim 5
Dependent Claim
44 words
A bus support as claimed in claim 3 wherein the end portions are identical and one hook portion extends laterally and upwardly at one side of the base and the other hook portion extends laterally and upwardly from the other side of the base.
Claim 6
Dependent Claim
114 words
A bus support as claimed in claim 4 wherein the side of each base portion from which its associated hook portion extends is disposed at the adjacent end of the flange on which the end portion is assembled and is vertically aligned with a point along an inner surface of the associated hook portion where a resultant force caused by wind is applied through the bus to the hook portion so that the distance between said point and a fulcrum defined by contact between an upper end edge of the groove in the base portion and an upper surface of the flange is minimized thus minimizing the turning moment applied to the end portion.
Claim 7
Dependent Claim
60 words
A bus support as claimed in claim 5 wherein the base is asymmetrical about a longitudinal axis extending through the openings, one side of each opposite end of the base having a greater displacement from the longitudinal axis than the other side, the hook portions extending laterally and upwardly respectively from the sides of the base having the greater displacement.
Claim 8
Dependent Claim
68 words
A bus support as claimed in claim 5 wherein end walls extend upwardly from an upper surface of the base at respective opposite ends of the base, and wall portions extend from the upper surface of the base upwardly and along opposite sides thereof and intersect inner sides of the end walls thereby to resist breakage of the base as the moment is applied to the end portions.
Claim 9
Dependent Claim
43 words
A bus support as claimed in claim 3 wherein the opening defined by each hook portion has a radius selected so that an outer surface of a bus received within the opening is juxtaposed to an inner side surface of the hook portion.
Claim 10
Dependent Claim
173 words
A bus support for a cylindrical electrical bus comprising a three-part casting including a base adapted to be secured to an insulating support structure and two spaced end portions assembled on respective opposite ends of the base so as to extend upwardly from the base, the end portions having respective substantially circular openings therethrough which are axially aligned with each other for slidably receiving and retaining the bus, the openings being defined by respective hook portions extending laterally and upwardly from respective base portions of the end portions, each hook portion partially encircling a bus when a bus is supported by the support, a recess formed in an underside of an outer end portion of each hook portion, and a spring member disposed at each recess, each spring member having a rounded portion extending beyond the inner surface of its associated hook portion for contacting the bus thereby to provide electrical continuity between the bus support and the bus for eliminating radio interference, and connecting means connecting the end portions to the base.
Claim 11
Dependent Claim
173 words
A bus support for a cylindrical electrical bus comprising a three-part casting including a base adapted to be secured to an insulating support structure and two spaced end portions assembled on respective opposite ends of the base so as to extend upwardly from the base, the end portions having respective substantially circular openings therethrough which are axially aligned with each other for slidably receiving and retaining the bus, the openings being defined by respective hook portions extending laterally and upwardly from respective base portions of the end portions, each hook portion partially encircling a bus when a bus is supported by the support, a recess formed in an underside of an outer end portion of each hook portion, and a spring member disposed at each recess, each spring member having a rounded portion extending beyond the inner surface of its associated hook portion for contacting the bus thereby to provide electrical continuity between the bus support and the bus for eliminating radio interference, and connecting means connecting the end portions to the base.
Claim 12
Dependent Claim
24 words
A bus support as claimed in claim 9 wherein each spring member is an elongated strip of metal extending longitudinally of the bus support.
Claim 13
Dependent Claim
179 words
A bus support for a cylindrical electrical bus comprising a three-part casting including a base adapted to be secured to an insulating support structure and two spaced end portions assembled on respective opposite ends of the base so as to extend upwardly from the base, the end portions having respective substantially circular openings therethrough which are axially aligned with each other for slidably receiving and retaining the bus, the openings being defined by respective hook portions extending laterally and upwardly from respective base portions of the end portions, each hook portion partially encircling a bus when a bus is supported by the support and having a radius selected so that an outer surface of a bus received within the opening is juxtaposed to an inner side surface of the hook portion, the upper surface of each base portion and the inner surface of each hook portion being uniformly curved with a substantially constant radius along the length thereof to prevent damage to a bus slidably moving through the opening, and connecting means connecting the end portions to the base.
Claim 14
Dependent Claim
179 words
A bus support for a cylindrical electrical bus comprising a three-part casting including a base adapted to be secured to an insulating support structure and two spaced end portions assembled on respective opposite ends of the base so as to extend upwardly from the base, the end portions having respective substantially circular openings therethrough which are axially aligned with each other for slidably receiving and retaining the bus, the openings being defined by respective hook portions extending laterally and upwardly from respective base portions of the end portions, each hook portion partially encircling a bus when a bus is supported by the support and having a radius selected so that an outer surface of a bus received within the opening is juxtaposed to an inner side surface of the hook portion, the upper surface of each base portion and the inner surface of each hook portion being uniformly curved with a substantially constant radius along the length thereof to prevent damage to a bus slidably moving through the opening, and connecting means connecting the end portions to the base.
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) | 1980-08-01 | 1981-01-31 | 1981-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-01 | 1985-01-31 | 1985-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-01 | 1989-01-31 | 1989-08-02 | $7700.00 | Window Closed / Lapsed |