US3715543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary electrical switching contact assembly with hollow insulating arc barrier
Assignee: ABB Inc USA
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Filing: 1971-01-12
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Granted: 1973-02-06
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Expires: 1991-01-12
Abstract
Abstract An electrical switching contact assembly having a housing with stationary contacts mounted thereon, and a rotating shaft with movable contacts attached thereto. The rotating shaft is mounted within the housing in a manner which will permit the stationary and movable contacts to engage when the switch is closed. The housing and shaft are constructed to permit stacking of the assembly for polyphase switching operations. An insulated hollow arc barrier member is disposed around the movable contact assembly.
Inventors
- 👤 A Keto
- 👤 R Manes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:51
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/04; H01H33/06; H01H1/00; H01H1/12; H01H1/36; H01H1/365; H01H33/60; H01H33/68; H01H9/00; H01H9/30; H01H9/34; H01H9/48; H01H19/00; H01H19/02; H01H19/10; H01H19/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
268 words
An electrical switching contact assembly comprising a housing member, said housing member having a base plate with a circular opening, first and second stationary contacts, means disposed on said base plate to attach said first and second stationary contacts symmetrically about said circular opening and in a plane substantially perpendicular to the longitudinal axis of said circular opening, a longitudinal shaft with first and second ends, said first end being constructed to receive rotational torque from an external means, said second end extending into said circular opening, a movable contact assembly with first and second movable contacts, means electrically connecting said first and second movable contacts to each other, means connecting said movable contact assembly to a first position on said longitudinal shaft so that a rotational movement of said longitudinal shaft will move said first and second movable contacts in the plane of said first and second stationary contacts to make or break electrical contact with said stationary contacts, a hollow cylindrical shielding member constructed of an insulating material and having first and second ends, the first end of said shielding member being attached to a second position on said longitudinal shaft, the second end of said shielding member having slots therein, the second end of said shielding member being disposed around said movable contact assembly with said movable contacts extending outwardly through the slots in said shielding member, said shielding member being rotated by said longitudinal shaft together with said movable contact assembly to place said shielding member between said stationary contacts and the portion of said movable contact assembly which is between said movable contacts.
Claim 2
Dependent Claim
268 words
An electrical switching contact assembly comprising a housing member, said housing member having a base plate with a circular opening, first and second stationary contacts, means disposed on said base plate to attach said first and second stationary contacts symmetrically about said circular opening and in a plane substantially perpendicular to the longitudinal axis of said circular opening, a longitudinal shaft with first and second ends, said first end being constructed to receive rotational torque from an external means, said second end extending into said circular opening, a movable contact assembly with first and second movable contacts, means electrically connecting said first and second movable contacts to each other, means connecting said movable contact assembly to a first position on said longitudinal shaft so that a rotational movement of said longitudinal shaft will move said first and second movable contacts in the plane of said first and second stationary contacts to make or break electrical contact with said stationary contacts, a hollow cylindrical shielding member constructed of an insulating material and having first and second ends, the first end of said shielding member being attached to a second position on said longitudinal shaft, the second end of said shielding member having slots therein, the second end of said shielding member being disposed around said movable contact assembly with said movable contacts extending outwardly through the slots in said shielding member, said shielding member being rotated by said longitudinal shaft together with said movable contact assembly to place said shielding member between said stationary contacts and the portion of said movable contact assembly which is between said movable contacts.
Claim 3
Dependent Claim
268 words
An electrical switching contact assembly comprising a housing member, said housing member having a base plate with a circular opening, first and second stationary contacts, means disposed on said base plate to attach said first and second stationary contacts symmetrically about said circular opening and in a plane substantially perpendicular to the longitudinal axis of said circular opening, a longitudinal shaft with first and second ends, said first end being constructed to receive rotational torque from an external means, said second end extending into said circular opening, a movable contact assembly with first and second movable contacts, means electrically connecting said first and second movable contacts to each other, means connecting said movable contact assembly to a first position on said longitudinal shaft so that a rotational movement of said longitudinal shaft will move said first and second movable contacts in the plane of said first and second stationary contacts to make or break electrical contact with said stationary contacts, a hollow cylindrical shielding member constructed of an insulating material and having first and second ends, the first end of said shielding member being attached to a second position on said longitudinal shaft, the second end of said shielding member having slots therein, the second end of said shielding member being disposed around said movable contact assembly with said movable contacts extending outwardly through the slots in said shielding member, said shielding member being rotated by said longitudinal shaft together with said movable contact assembly to place said shielding member between said stationary contacts and the portion of said movable contact assembly which is between said movable contacts.
Claim 4
Dependent Claim
268 words
An electrical switching contact assembly comprising a housing member, said housing member having a base plate with a circular opening, first and second stationary contacts, means disposed on said base plate to attach said first and second stationary contacts symmetrically about said circular opening and in a plane substantially perpendicular to the longitudinal axis of said circular opening, a longitudinal shaft with first and second ends, said first end being constructed to receive rotational torque from an external means, said second end extending into said circular opening, a movable contact assembly with first and second movable contacts, means electrically connecting said first and second movable contacts to each other, means connecting said movable contact assembly to a first position on said longitudinal shaft so that a rotational movement of said longitudinal shaft will move said first and second movable contacts in the plane of said first and second stationary contacts to make or break electrical contact with said stationary contacts, a hollow cylindrical shielding member constructed of an insulating material and having first and second ends, the first end of said shielding member being attached to a second position on said longitudinal shaft, the second end of said shielding member having slots therein, the second end of said shielding member being disposed around said movable contact assembly with said movable contacts extending outwardly through the slots in said shielding member, said shielding member being rotated by said longitudinal shaft together with said movable contact assembly to place said shielding member between said stationary contacts and the portion of said movable contact assembly which is between said movable contacts.
References Cited (Backward Citations)
US524717A
Cited
US954462A
Cited
US1785194A
Cited
US1895330A
Cited
US3251956A
Cited
US3218425A
Cited
US3590183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |