GB547675A - Improvements in or relating to electrically driven vehicles with rheostatic and mechanical braking - Google Patents
Improvements in or relating to electrically driven vehicles with rheostatic and mechanical brakingInfo
- Publication number
- GB547675A GB547675A GB285641A GB285641A GB547675A GB 547675 A GB547675 A GB 547675A GB 285641 A GB285641 A GB 285641A GB 285641 A GB285641 A GB 285641A GB 547675 A GB547675 A GB 547675A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rheostatic
- relating
- electrically driven
- relay
- coil
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/24—Electrodynamic brake systems for vehicles in general with additional mechanical or electromagnetic braking
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
547,675. Control of D.C. motors. GENERAL ELECTRIC CO., Ltd., and CROFT, E. H. March 3, 1941, No. 2856. [Class 38 (iii)] Traction motor 2 is rheostatically and mechanically braked by depression of pedal associated with controller 11. To avoid continued energization of the shunt field 4 when the vehicle is held stationary by the mechanical brake, the contactor 7 is opened by de-energizing its coil 7c at very low speeds. The coil 7c is energized over contacts 12 of relay 12c which is associated with an auxiliary generator 13. At low speeds (about 1 m.p.h.) the relay 12 opens. Other means of determining low speed may be used, such as a vane or air cylinder device associated with the self-ventilation of the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB285641A GB547675A (en) | 1941-03-03 | 1941-03-03 | Improvements in or relating to electrically driven vehicles with rheostatic and mechanical braking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB285641A GB547675A (en) | 1941-03-03 | 1941-03-03 | Improvements in or relating to electrically driven vehicles with rheostatic and mechanical braking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB547675A true GB547675A (en) | 1942-09-07 |
Family
ID=9747254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB285641A Expired GB547675A (en) | 1941-03-03 | 1941-03-03 | Improvements in or relating to electrically driven vehicles with rheostatic and mechanical braking |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB547675A (en) |
-
1941
- 1941-03-03 GB GB285641A patent/GB547675A/en not_active Expired
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