US4308437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Handle operating mechanism for an electric circuit breaker
Assignee: Toshiba Corp
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Filing: 1979-10-31
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Granted: 1981-12-29
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Expires: 1999-10-31
Abstract
Abstract A handle operating mechanism is provided to actuate an electric circuit breaker having a release lever and to interlock the electric circuit breaker and the door of a casing accommodating the circuit breaker. A manually operable handle is rotatably mounted on a case and is integrally coupled with a cam, disposed within the case, having a pin and a trapped portion. An actuating member which is engaged with the pin of the cam is linearly moved along a guide rod in response to rotation of the handle. One end of the guide rod contacts and slides along the circumference of the cam, the other end of the guide rod extending from the case to interlock with the door of the casing.
Inventors
- 👤 Masatomi Takagi
- 👤 Takanori Hagawa
- 👤 Seietsu Takamatsu
- 👤 Isao Ookoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:30
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/20; H01H9/22
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
156 words
A handle operating mechanism in combination with an electric circuit breaker having an operating lever which interlocks the electric circuit breaker and a door of a casing accommodating the circuit breaker, said combination comprising: a case disposed within the casing; a release lever for the circuit breaker mounted within the case; a manually operable handle rotatably mounted on a surface of the case for predetermined operating positions including an ON position and TRIP position; means connected to the operable handle for actuating the release lever for the circuit breaker upon movement of the operable handle; and means for engaging the case with the door of the casing so as to interlock the case and the door when the operable handle is placed at the ON and TRIP positions; said actuating means further comprising a sliding member engaging the engaging means so as to slide along the engaging means in response to movement of the operable handle.
Claim 2
Dependent Claim
156 words
A handle operating mechanism in combination with an electric circuit breaker having an operating lever which interlocks the electric circuit breaker and a door of a casing accommodating the circuit breaker, said combination comprising: a case disposed within the casing; a release lever for the circuit breaker mounted within the case; a manually operable handle rotatably mounted on a surface of the case for predetermined operating positions including an ON position and TRIP position; means connected to the operable handle for actuating the release lever for the circuit breaker upon movement of the operable handle; and means for engaging the case with the door of the casing so as to interlock the case and the door when the operable handle is placed at the ON and TRIP positions; said actuating means further comprising a sliding member engaging the engaging means so as to slide along the engaging means in response to movement of the operable handle.
Claim 3
Dependent Claim
48 words
A handle operating mechanism as set forth in claim 1, said engaging means comprising first and second engaging members cooperating so as to engage the case with the door of the casing, said actuating means lockably engaging the engaging means when the door of the casing is opened.
Claim 4
Dependent Claim
19 words
A handle operating mechanism as set forth in claim 2, wherein said first and second engaging members are interconnected.
Claim 5
Dependent Claim
37 words
A handle operating mechanism as set forth in claim 2, further comprising means disposed within the case for biasing one of said first and second engaging members and for actuating the release lever for the circuit breaker.
Claim 6
Dependent Claim
91 words
A handle operating mechanism as set forth in claim 2, wherein the case includes a hole formed therein and one of said first and second engaging members comprises a bent portion and a top end portion which extends from the case, respectively, and the release lever cooperatively engages the hole in the case and further includes a hole formed therein to pivotably engage with the bent portion of said one of said first and second engaging members, the top end portion being movable in accordance with movement of said bent portion.
Claim 7
Dependent Claim
35 words
A handle operating mechanism as set forth in claim 5, further comprising releasing means for releasing engagement between the bent portion of said one of said first and second engaging members and the actuating means.
Claim 8
Dependent Claim
169 words
A handle operating mechanism in combination with an electric circuit breaker having an operating lever which interlocks the electric circuit breaker and a door of a casing accommodating the circuit breaker, said combination comprising: a case disposed within the casing; a release lever for the circuit breaker mounted case; a manually operable handle rotatably mounted on a surface of the case for predetermined operating positions including an ON position and TRIP position; means connected to the operable handle for actuating the release lever for the circuit breaker upon movement of the operable handle; and means for engaging the case with the door of the casing so as to interlock the case and the door when the handle is placed at the ON or TRIP positions, said actuating means lockably engaging the engaging means when the door of the casing is opened, said actuating means further comprising a sliding member engaging the engaging means so as to slide along the engaging means in response to movement of the operable handle.
Claim 9
Dependent Claim
169 words
A handle operating mechanism in combination with an electric circuit breaker having an operating lever which interlocks the electric circuit breaker and a door of a casing accommodating the circuit breaker, said combination comprising: a case disposed within the casing; a release lever for the circuit breaker mounted case; a manually operable handle rotatably mounted on a surface of the case for predetermined operating positions including an ON position and TRIP position; means connected to the operable handle for actuating the release lever for the circuit breaker upon movement of the operable handle; and means for engaging the case with the door of the casing so as to interlock the case and the door when the handle is placed at the ON or TRIP positions, said actuating means lockably engaging the engaging means when the door of the casing is opened, said actuating means further comprising a sliding member engaging the engaging means so as to slide along the engaging means in response to movement of the operable handle.
Claim 10
Dependent Claim
38 words
A handle operating mechanism as set forth in claims 1 or 7, further comprising stopping means mounted on the door of the casing for stopping movement of the engaging means to allow for rotation of the operable handle.
Claim 11
Dependent Claim
27 words
A handle operating mechanism as set forth in claim 8, the stopping means including two portions corresponding to connecting and testing positions of the circuit breaker, respectively.
Claim 12
Dependent Claim
54 words
A handle operating mechanism as set forth in claim 8, the stopping means being formed with a hook-shape on the door with the top end portion of the engaging means being formed in a semicircular shape whereby the door can close even if the circuit breaker is positioned at the ON or TRIP position.
Claim 13
Dependent Claim
174 words
A handle operating mechanism which actuates an electric circuit breaker having an operating lever which interlocks the electric circuit breaker and a door of a casing accommodating the circuit breaker, said mechanism comprising: a case for disposition within the casing; a release lever for the circuit breaker mounted within the case; a manually operable handle rotatably mounted on a surface of the case for predetermined operating positions including an ON position and TRIP position; means connected to the operable handle for actuating the release lever for the circuit breaker upon movement of the operable handle; and means for engaging the case with the door of the casing so as to interlock the case and the door when the operable handle is placed at the ON and TRIP positions, said actuating means comprising an operating axle integrally coupled with the manually operable handle, a cam having a trapped portion integrally coupled with the operating axle, and a sliding member for operating the release lever for the circuit breaker in response to movement of the cam.
Claim 14
Dependent Claim
174 words
A handle operating mechanism which actuates an electric circuit breaker having an operating lever which interlocks the electric circuit breaker and a door of a casing accommodating the circuit breaker, said mechanism comprising: a case for disposition within the casing; a release lever for the circuit breaker mounted within the case; a manually operable handle rotatably mounted on a surface of the case for predetermined operating positions including an ON position and TRIP position; means connected to the operable handle for actuating the release lever for the circuit breaker upon movement of the operable handle; and means for engaging the case with the door of the casing so as to interlock the case and the door when the operable handle is placed at the ON and TRIP positions, said actuating means comprising an operating axle integrally coupled with the manually operable handle, a cam having a trapped portion integrally coupled with the operating axle, and a sliding member for operating the release lever for the circuit breaker in response to movement of the cam.
Claim 15
Dependent Claim
43 words
A handle operating mechanism as set forth in claim 11, further comprising means disposed within the case for biasing said engaging means and for actuating the release lever, said sliding member having an opening formed therein within which the engaging means is disposed.
Claim 16
Dependent Claim
43 words
A handle operating mechanism as set forth in claim 11, further comprising additional engaging means mounted on the sliding member of the actuating means and extending through the case, and a partition member mounted on the casing for preventing movement of the case.
Claim 17
Dependent Claim
189 words
A handle operating mehcanism in combination with an electric circuit breaker having an operating lever which interlocks the electric circuit breaker and a door of a casing accommodating the circuit breaker, said combination comprising: a case disposed within the casing; a release lever for the circuit breaker mounted within the case; a manualy operable handle rotatably mounted on a surface of the case for predetermined operating positions including an ON position and TRIP position; means connected to the operable handle for actuating the release lever for the circuit breaker upon movement of the operable handle; and means for engaging the case with the door of the casing so as to interlock the case and the door when the handle is placed at the ON or TRIP positions, said actuating means lockably engaging the engaging means when the door of the casing is opened, said actuating means comprising an operating axle integrally coupled with the manually operable handle, a cam having a trapped portion integrally coupled with the operating axle, and a sliding member for operating the release lever for the circuit breaker in response to movement of the cam.
Claim 18
Dependent Claim
189 words
A handle operating mehcanism in combination with an electric circuit breaker having an operating lever which interlocks the electric circuit breaker and a door of a casing accommodating the circuit breaker, said combination comprising: a case disposed within the casing; a release lever for the circuit breaker mounted within the case; a manualy operable handle rotatably mounted on a surface of the case for predetermined operating positions including an ON position and TRIP position; means connected to the operable handle for actuating the release lever for the circuit breaker upon movement of the operable handle; and means for engaging the case with the door of the casing so as to interlock the case and the door when the handle is placed at the ON or TRIP positions, said actuating means lockably engaging the engaging means when the door of the casing is opened, said actuating means comprising an operating axle integrally coupled with the manually operable handle, a cam having a trapped portion integrally coupled with the operating axle, and a sliding member for operating the release lever for the circuit breaker in response to movement of the cam.
References Cited (Backward Citations)
US3192334A
Cited
US3260808A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-12-28 | 1985-06-29 | 1985-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-28 | 1989-06-29 | 1989-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-28 | 1993-06-29 | 1993-12-29 | $7700.00 | Window Closed / Lapsed |