US3908104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-phase circuit breaker having spring mounting for interlocking tie bar
Assignee: ITE Imperial Corp
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Filing: 1974-05-13
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Granted: 1975-09-23
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Expires: 1994-05-13
Abstract
Abstract A multipole molded case circuit breaker having a single springpowered operating mechanism for the contacts of all poles is constructed with the contact connecting tie bar seated in bearing recesses of the mechanism frame so that this tie bar is pivoted about a longitudinal axis extending through the tie bar.
Inventors
- 👤 Anthony B Michetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:52
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/1009; H01H9/00; H01H2009/0088
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
166 words
A multipole circuit breaker including a housing having internal partitions defining parallel compartments, one for each pole of said circuit breaker; within each of said compartments, contact means including a stationary contact and a movable contact engageable with and disengageable from said stationary contact, a movable contact arm to which said movable contact is mounted, and a carrier to which said arm is mounted, tie bar means extending across said compartments and rigidly connected to said carriers for simultaneous movement thereof as said rod is pivoted about a longitudinal axis extending therethrough; a spring powered operating mechanism connected to a first of said carriers for simultaneously operating the contact means of all poles of said circuit breaker into and out of engagement; said operating mechanism including a stationary frame having aligned spaced bearing formations; said rod being seated on said bearing formations whereby said rod is mounted for pivotal movement about said longitudinal axis; and spring clip means retaining said rod seated on said bearing formations.
Claim 2
Dependent Claim
166 words
A multipole circuit breaker including a housing having internal partitions defining parallel compartments, one for each pole of said circuit breaker; within each of said compartments, contact means including a stationary contact and a movable contact engageable with and disengageable from said stationary contact, a movable contact arm to which said movable contact is mounted, and a carrier to which said arm is mounted, tie bar means extending across said compartments and rigidly connected to said carriers for simultaneous movement thereof as said rod is pivoted about a longitudinal axis extending therethrough; a spring powered operating mechanism connected to a first of said carriers for simultaneously operating the contact means of all poles of said circuit breaker into and out of engagement; said operating mechanism including a stationary frame having aligned spaced bearing formations; said rod being seated on said bearing formations whereby said rod is mounted for pivotal movement about said longitudinal axis; and spring clip means retaining said rod seated on said bearing formations.
Claim 3
Dependent Claim
29 words
A multipole circuit breaker as set forth in claim 1 in which the rod is provided with longitudinally spaced grooves into which boundary portions of the bearing formations extend.
Claim 4
Dependent Claim
48 words
A multipole circuit breaker as set forth in claim 1 in which said spring powered operating mechanism is mounted in a first of said parallel compartments; said circuit breaker also including a second and a third of said parallel compartments positioned on opposite sides of said first compartment.
Claim 5
Dependent Claim
27 words
A multipole circuit breaker as set forth in claim 3 in which, in each of said compartments, the movable contact arm is pivotally mounted to the carrier.
Claim 6
Dependent Claim
29 words
A multipole circuit breaker as set forth in claim 4 in which the rod is provided with longitudinally spaced grooves into which boundary portions of the bearing formations extend.
Claim 7
Dependent Claim
47 words
A multipole circuit breaker as set forth in claim 5 in which each of the bearing formations constitutes a boundary portion of a slot in said frame, each of said slots having an open end through which said rod is entered for seating on said bearing formations.
Claim 8
Dependent Claim
47 words
A multipole circuit breaker as set forth in claim 1 in which each of the bearing formations constitutes a boundary portion of a slot in said frame, each of said slots having an open end through which said rod is entered for seating on said bearing formations.
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) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |