GB755136A - Improvements in and relating to dashpot type damping devices - Google Patents
Improvements in and relating to dashpot type damping devicesInfo
- Publication number
- GB755136A GB755136A GB1179654A GB1179654A GB755136A GB 755136 A GB755136 A GB 755136A GB 1179654 A GB1179654 A GB 1179654A GB 1179654 A GB1179654 A GB 1179654A GB 755136 A GB755136 A GB 755136A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- rod
- extension
- engages
- april
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H7/00—Devices for introducing a predetermined time delay between the initiation of the switching operation and the opening or closing of the contacts
- H01H7/02—Devices for introducing a predetermined time delay between the initiation of the switching operation and the opening or closing of the contacts with fluid timing means
- H01H7/03—Devices for introducing a predetermined time delay between the initiation of the switching operation and the opening or closing of the contacts with fluid timing means with dash-pots
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
- F16F9/185—Bitubular units
Abstract
755,136. Dashpots. ENGLISH ELECTRIC CO., Ltd. April 22, 1955 [April 23, 1954], No. 11796/54. Class 108 (3). [Also in Group XXXVII] A dashpot for damping the movement of a member (not shown, but connected to a bridge member 5) such as the moving contact assembly of a circuit breaker comprises a cylinder 8 having an annular partition 8a, on each side of which is slidable a respective piston 10, 14, the piston 10 being secured to a rod 11 adapted to engage the member 5 as it approaches a first extreme position, and the piston 14 being slidable on the rod 11 and having an extension 15 adapted to engage with the member 5 as it approaches a second extreme position, the cylinder 8 being surrounded by a liquid-filled casing 17 having means to permit liquid fluid flow between each side of each piston. In operation, when the circuit breaker is tripped, the contact assembly moves downwardly and, towards the end of its travel, the bridge member 5 strikes the extension 15. This acts on the piston 14, driving oil through orifices 19, 20a, 20b, 20c and 20d. The piston 14 finally engages an extension 10a of the piston 10 driving the latter downwardly until it engages an abutment ring 22. During closing of the breaker, a spring 16 returns the piston 14, and near the end of the movement, the member 5 engages an abutment 13 on the rod 11 to return the piston 10 to its previous position. The casing 17 is connected at 18 with oil in a tank 4 containing the switch gear. The piston 10 is axially adjustable on the screw-threaded end of the rod 11 in quarterturns defined by slots 12 and a pin 12a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1179654A GB755136A (en) | 1954-04-23 | 1954-04-23 | Improvements in and relating to dashpot type damping devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1179654A GB755136A (en) | 1954-04-23 | 1954-04-23 | Improvements in and relating to dashpot type damping devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB755136A true GB755136A (en) | 1956-08-15 |
Family
ID=9992866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1179654A Expired GB755136A (en) | 1954-04-23 | 1954-04-23 | Improvements in and relating to dashpot type damping devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB755136A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108751007A (en) * | 2018-06-27 | 2018-11-06 | 安徽博流体传动股份有限公司 | A kind of novel pneumatic light lifter |
-
1954
- 1954-04-23 GB GB1179654A patent/GB755136A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108751007A (en) * | 2018-06-27 | 2018-11-06 | 安徽博流体传动股份有限公司 | A kind of novel pneumatic light lifter |
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