GB1228520A - - Google Patents
Info
- Publication number
- GB1228520A GB1228520A GB1228520DA GB1228520A GB 1228520 A GB1228520 A GB 1228520A GB 1228520D A GB1228520D A GB 1228520DA GB 1228520 A GB1228520 A GB 1228520A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arm
- carrier
- contact
- arms
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000969 carrier Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/58—Electric connections to or between contacts; Terminals
- H01H1/5833—Electric connections to or between contacts; Terminals comprising an articulating, sliding or rolling contact between movable contact and terminal
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/38—Auxiliary contacts on to which the arc is transferred from the main contacts
- H01H9/383—Arcing contact pivots relative to the movable contact assembly
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
- H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
- H01H1/226—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member having a plurality of parallel contact bars
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/58—Electric connections to or between contacts; Terminals
- H01H1/5822—Flexible connections between movable contact and terminal
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Breakers (AREA)
Abstract
1,228,520. Automatic circuit - breakers. SQUARE D CO. 12 Nov., 1969 [18 Nov., 1968], No. 55376/69. Heading H1N. A circuit-breaker 20, otherwise similar to that of U.K. Specification 1,145,588, is characterized by a movable contact structure 60a including one or more main contact arms 73 and an arcing contact arm 71 pivoting about parallel axes, with the first point of arm 71 located between the pivoted and free end portions of arm 73, a contact arm carrier 62a having adjusting screws 86 engaging the main contact arm or arms 73 to adjust the biasing force of spring means 78 biasing the arms 71, 73 about their respective pivot axes. Where the arcing contact arm 71 is between two main contact arms 73, two bowed leaf-springs 78 abut a bracket 80 connected to the centre tine 74b of a flexible connector 74 secured to a terminal plate 76, tine 74b carrying the arm 71, and an adjusting stud 84 passes through the carrier 62a to engage arm 71 for adjustment thereof relative to the carrier 62a and arms 73. A modified assembly using a slightly different carrier 62b comprises a single main pivoted contact arm 102, Fig. 5, and an arcing contact arm 101, pivoted thereon at 103, a U-shaped leaf-spring 109 engaging the arm 101 with one leg and the carrier 62b or 62a with the other leg, which may be secured to the carrier. Screws 86 in the carrier engage the arm 102 on either side of arm 101. In a further embodiment, Fig. 8 (not shown), the leaf-spring 109a provides the contact arm carrier and the contact pressure spring. Different pivots for the main contact arms are shown in Figs. 2, 5 and 9 (not shown). An adjustable spring 89, Fig. 2, provides lost motion for overtravel of the carriers 62a, 62b, with respect to the associated arcing contact arms. In a three-pole breaker, a cross-bar 64 is provided for conjoint operation, and the centrepole has a movable contact structure 60a and carrier 62a, whilst the outer poles have a contact structure 60b, Fig. 1 (not shown), and carrier 62b, see also Fig. 4 (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US77660868A | 1968-11-18 | 1968-11-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1228520A true GB1228520A (en) | 1971-04-15 |
Family
ID=25107890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1228520D Expired GB1228520A (en) | 1968-11-18 | 1969-11-12 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3525837A (en) |
| DE (1) | DE1957970B2 (en) |
| FR (1) | FR2023528A1 (en) |
| GB (1) | GB1228520A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2817668C2 (en) * | 1978-04-19 | 1979-11-15 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Low-voltage circuit breaker with a device for limiting contact lifting |
| US4849589A (en) * | 1987-08-31 | 1989-07-18 | Square D Company | Contact assembly for a circuit breaker |
| DE19530492B4 (en) * | 1995-08-18 | 2005-08-04 | Siemens Ag | Movement contact with cutting edge positioning |
| DE10222010C1 (en) * | 2002-05-17 | 2003-11-20 | Moeller Gmbh | Circuit breakers for high currents and low voltage |
| JP2007166981A (en) | 2005-12-22 | 2007-07-05 | Fujitsu Ltd | Injector and method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3198924A (en) * | 1962-02-21 | 1965-08-03 | Ite Circuit Breaker Ltd | Independent means for adjusting contact pressure and contact arm position |
| US3218428A (en) * | 1963-12-19 | 1965-11-16 | Gen Electric | Adjustable contact pressure switch mechanism |
| US3268702A (en) * | 1965-02-05 | 1966-08-23 | Ite Circuit Breaker Ltd | Loosely mounted independent coupling means for adjusting contact pressure and contact arm position |
| US3355685A (en) * | 1966-09-30 | 1967-11-28 | Square D Co | Electric circuit breaker having improved operating means |
| US3365561A (en) * | 1966-11-21 | 1968-01-23 | Gen Electric | Multiple finger type current-carrying contact arm pivot assembly |
-
1968
- 1968-11-18 US US776608A patent/US3525837A/en not_active Expired - Lifetime
-
1969
- 1969-11-12 GB GB1228520D patent/GB1228520A/en not_active Expired
- 1969-11-17 FR FR6939418A patent/FR2023528A1/fr active Pending
- 1969-11-18 DE DE19691957970 patent/DE1957970B2/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1957970A1 (en) | 1970-07-23 |
| DE1966047B2 (en) | 1973-01-18 |
| FR2023528A1 (en) | 1970-08-21 |
| DE1957970B2 (en) | 1971-08-12 |
| US3525837A (en) | 1970-08-25 |
| DE1966415A1 (en) | 1972-08-17 |
| DE1966415B2 (en) | 1974-08-08 |
| DE1966047A1 (en) | 1971-05-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PE20 | Patent expired after termination of 20 years |