US4151495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resetting means for trip free circuit breaker contact operating mechanism
Assignee: Gould Inc
•
Filing: 1977-07-20
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Granted: 1979-04-24
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Expires: 1997-07-20
Abstract
Abstract A narrow molded case circuit breaker is provided with a spring powered trip free contact operating mechanism including a manual operating member and a releasable cradle which must be latched in a reset position in order to close the contacts. The cradle and operating member are connected by a reset link pivotally mounted to the operating member for moving the cradle from a released or tripped position to a latched or reset position.
Inventors
- 👤 Tadeusz J. Rys
- 👤 Bernard Dimarco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:41
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/50; H01H71/52; H01H71/522; H01H71/525; H01H71/02; H01H71/0207; H01H71/0221
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
99 words
A circuit breaker including cooperating contact means and a spring powered trip free operating mechanism for opening and closing the contact means; said mechanism including a cradle operable between a tripped position wherein the contact means are open and a reset position wherein said contact means may be closed, an operating member for actuating the mechanism to open and close the contacts when the cradle is in said reset position, and a reset link through which force applied to said operating member is transmitted to said cradle for moving the latter from said tripped position to said reset position.
Claim 2
Dependent Claim
99 words
A circuit breaker including cooperating contact means and a spring powered trip free operating mechanism for opening and closing the contact means; said mechanism including a cradle operable between a tripped position wherein the contact means are open and a reset position wherein said contact means may be closed, an operating member for actuating the mechanism to open and close the contacts when the cradle is in said reset position, and a reset link through which force applied to said operating member is transmitted to said cradle for moving the latter from said tripped position to said reset position.
Claim 3
Dependent Claim
33 words
A circuit breaker as set forth in claim 1 in which the reset link is in tension as it transmits force from the operating member to move the cradle to the reset position.
Claim 4
Dependent Claim
24 words
A circuit breaker as set forth in claim 2 in which there is a pivot means mounting the reset link to the operating member.
Claim 5
Dependent Claim
24 words
A circuit breaker as set forth in claim 3 in which there is a lost motion connecting between the reset link and the cradle.
Claim 6
Dependent Claim
32 words
A circuit breaker as set forth in claim 4 in which the lost motion connection is comprised of an ear projecting from the cradle into an oversized opening in the reset link.
Claim 7
Dependent Claim
16 words
A circuit breaker as set forth in claim 5 in which the oversized opening is elongated.
Claim 8
Dependent Claim
21 words
A circuit breaker as set forth in claim 5 in which the pivot means is part of another lost motion connection.
Claim 9
Dependent Claim
34 words
A circuit breaker as set forth in claim 7 in which the another lost motion connection is comprised of a pin on the operating member extending into an elongated slot in said reset link.
Claim 10
Dependent Claim
16 words
A circuit breaker as set forth in claim 8 in which the oversized opening is elongated.
Claim 11
Dependent Claim
30 words
A circuit breaker as set forth in claim 2 in which the operating member and the cradle are mounted for pivotal movement about individual parallel centers that are laterally spaced.
References Cited (Backward Citations)
US4090158A
Cited
US4056797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-23 | 1982-10-23 | 1983-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-23 | 1986-10-23 | 1987-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-23 | 1990-10-23 | 1991-04-24 | $7700.00 | Window Closed / Lapsed |