US3739122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High voltage arc extinguishing circuit interrupter
Assignee: RELIABLE POWER PRODUCTS Inc A CORP OF DE(FKA) MACLEAN-FOGG ACQUISITION Co
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Filing: 1971-07-19
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Granted: 1973-06-12
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Expires: 1991-07-19
Abstract
Abstract A load interrupter unit of the arc expulsion type has a dielectric body with a fixed contact on the body and a dielectric rotor rotatable in the body and carrying a movable contact. A snap-acting or timing mechanism is used to rotate the rotor in one direction for effecting a quick-break of the contacts, and the same mechanism is used to rotate the rotor in the same direction to effect a quick-make of the contacts. The circular contact path renders the unit relatively compact. The gases produced by the arc pass between the separating contacts and quench the arc, and the gases pass to the outside of the unit through an expulsion vent. A dielectric wall of the body isolates and protects parts of the mechanism from the chamber in which the arc is formed.
Inventors
- 👤 C Pierzchala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:53
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/70; H01H33/76; H01H33/77; H01H3/00; H01H3/22; H01H3/30; H01H33/02; H01H33/04; H01H33/12; H01H33/121; H01H33/125; H01H33/126
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
229 words
A high voltage, arc-extinguishing, circuit interrupter comprising a body, a fixed contact and an index member, each being mounted on said body, a rotor having a contact movable therewith, said rotor being rotatable in said body and having a first position in which rotor contact engages said fixed contact and a second position that is rotatably displaced from said first position and in which said rotor contact engages said index member, means forming an electrically conductive path through said housing, said path including said rotor contact and said fixed contact when the two are engaged, mechanism for effecting snap-action rotatable movement of said rotor in one direction from said first position to said second position to separate said rotor contact from said fixed contact, thereby to interrupt said current path and form an arc when current is flowing through said path upon said interruption and provide through said index member a heat sink for cooling said rotor contact, an expulsion vent for gases produced by the arc, means for mounting said expulsion vent on said body, means defining a flow path for said gases between the separating contacts and through said expulsion vent, and said mechanism being operable for snap-action rotation of said rotor in said one direction for moving said rotor from said second position to said first position to engage said rotor contact and said fixed contact.
Claim 2
Dependent Claim
229 words
A high voltage, arc-extinguishing, circuit interrupter comprising a body, a fixed contact and an index member, each being mounted on said body, a rotor having a contact movable therewith, said rotor being rotatable in said body and having a first position in which rotor contact engages said fixed contact and a second position that is rotatably displaced from said first position and in which said rotor contact engages said index member, means forming an electrically conductive path through said housing, said path including said rotor contact and said fixed contact when the two are engaged, mechanism for effecting snap-action rotatable movement of said rotor in one direction from said first position to said second position to separate said rotor contact from said fixed contact, thereby to interrupt said current path and form an arc when current is flowing through said path upon said interruption and provide through said index member a heat sink for cooling said rotor contact, an expulsion vent for gases produced by the arc, means for mounting said expulsion vent on said body, means defining a flow path for said gases between the separating contacts and through said expulsion vent, and said mechanism being operable for snap-action rotation of said rotor in said one direction for moving said rotor from said second position to said first position to engage said rotor contact and said fixed contact.
Claim 3
Dependent Claim
54 words
An interrupter according to claim 1 in which said body has a chamber, said rotor and said fixed and rotor contacts being in said chamber, said mechanism including shafting in driving connection with said rotor and means for actuating said shafting, and said body having means for isolating said actuating means from said chamber.
Claim 4
Dependent Claim
23 words
An interrupter according to claim 2 in which said shafting is included in the means forming the electrically conductive path through said housing.
Claim 5
Dependent Claim
46 words
An interrupter according to claim 1 in which said rotor contact is substantially at the periphery of the rotor, and said rotor has spring means for imposing localized pressure on the rotor contact to uRge the latter against the fixed contact when the two are engaged.
Claim 6
Dependent Claim
31 words
An interrupter according to claim 2 in which the shafting includes a shaft and a sleeve mounted on the shaft and rotatable relative thereto, said rotor being mounted on said sleeve.
Claim 7
Dependent Claim
35 words
An interrupter according to claim 5 in which said shaft if rotatable through a predetermined angle prior to effecting snap-action rotation of said sleeve and rotor to disengage and engage said fixed and movable contacts.
Claim 8
Dependent Claim
124 words
A high voltage arc-extinguishing, circuit interrupter comprising a substantially dielectric hollow body having an annular cavity, a fixed contact in said body, a substantially dielectric rotor rotatable in said cavity and carrying a movable contact, said movable contact being engageable and disengageable with said fixed contact, actuating means in driving connection with said rotor for effecting a snap-action rotation in one direction of said rotor to disengage quickly said rotor contact from said fixed contact and for effecting by movement in the same direction a snap-action rotation to engage quickly said rotor contact with said fixed contact, and means forming an expulsion vent from said body for gases produced by an arc resulting from the disengagement of said rotor contact from said fixed contact.
Claim 9
Dependent Claim
124 words
A high voltage arc-extinguishing, circuit interrupter comprising a substantially dielectric hollow body having an annular cavity, a fixed contact in said body, a substantially dielectric rotor rotatable in said cavity and carrying a movable contact, said movable contact being engageable and disengageable with said fixed contact, actuating means in driving connection with said rotor for effecting a snap-action rotation in one direction of said rotor to disengage quickly said rotor contact from said fixed contact and for effecting by movement in the same direction a snap-action rotation to engage quickly said rotor contact with said fixed contact, and means forming an expulsion vent from said body for gases produced by an arc resulting from the disengagement of said rotor contact from said fixed contact.
Claim 10
Dependent Claim
27 words
An interrupter according to claim 7 having a crank for actuation by a high voltage disconnect switch, said crank being connected to actuating means for initiation thereof.
Claim 11
Dependent Claim
16 words
An interrupter according to claim 7 in which said rotor and body have overlapping spaced ribs.
Claim 12
Dependent Claim
39 words
An interrupter according to claim 7 including a dielectric wall, means connected to said actuating means and projecting through said wall and forming the driving connection with said rotor, said dielectric wall separating said cavity from said actuating means.
Claim 13
Dependent Claim
59 words
An interrupter according to claim 7 having a fixed index member in said cavity that is substantially 180* displaced from said fixed contact, and said actuating means rotates the rotor to move the rotor contact into engagement with said index member in one snap-action and also rotates said rotor contact into engagement with said fixed contact in another snap-action.
Claim 14
Dependent Claim
39 words
An interrupter according to claim 7 in which said means forming the expulsion vent includes a tubular structure secured to said body for mounting the interrupter on a disconnect switch, the tubular structure containing a normally closed check valve.
Claim 15
Dependent Claim
20 words
An interrupter according to claim 11 in which the index member constitutes a heat sink for cooling the movable contact.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |