GB1196244A - Improvements relating to Electrically Propelled Invalid Carriages - Google Patents
Improvements relating to Electrically Propelled Invalid CarriagesInfo
- Publication number
- GB1196244A GB1196244A GB3367166A GB3367166A GB1196244A GB 1196244 A GB1196244 A GB 1196244A GB 3367166 A GB3367166 A GB 3367166A GB 3367166 A GB3367166 A GB 3367166A GB 1196244 A GB1196244 A GB 1196244A
- Authority
- GB
- United Kingdom
- Prior art keywords
- movement
- motors
- lever
- electrically propelled
- controls
- 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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
- H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
- H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
- H02P7/29—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G2203/00—General characteristics of devices
- A61G2203/10—General characteristics of devices characterised by specific control means, e.g. for adjustment or steering
- A61G2203/14—Joysticks
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
Abstract
1,196,244. Electrically propelled invalid carriages. CABLEFORM Ltd. 24 Oct., 1967 [26 July, 1966], No. 33671/66. Heading B7H. In an electrically propelled invalid carriage having a pair of driving wheels which are independently driven to provide steering and one or more castor wheels, the drive to each driving wheel is provided with a continuously variable electrical control system. Preferably each control system is of the D.C. pulse control type in which control of the mark space ratio of the pulses controls the effective current. The motors are controlled by a single universally pivoted lever 55 movement of which in a fore and aft direction controls forward and reverse movement of the invalid carriage and in a transverse direction operates the motors differentially. Movement of the lever 55 is limited by contact with an asymmetrical ring or hole in a plate 65 to permit a higher forward than reverse speed of the invalid carriage. The lever 55 passes through two perpendicular slots 62 in two plates 61, to which are secured two perpendicular pairs of axially slidable bars 59 for controlling the respective motors. Movement of each pair of bars 59 actuates respective microswitches 63 for forward and reverse travel and a potentiometer 45 which controls the semi-conductor control means and hence the current to the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3367166A GB1196244A (en) | 1966-07-26 | 1966-07-26 | Improvements relating to Electrically Propelled Invalid Carriages |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3367166A GB1196244A (en) | 1966-07-26 | 1966-07-26 | Improvements relating to Electrically Propelled Invalid Carriages |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1196244A true GB1196244A (en) | 1970-06-24 |
Family
ID=10355923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3367166A Expired GB1196244A (en) | 1966-07-26 | 1966-07-26 | Improvements relating to Electrically Propelled Invalid Carriages |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1196244A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2160163A5 (en) * | 1971-11-10 | 1973-06-22 | Cav Ltd | |
| FR2550871A1 (en) * | 1983-08-16 | 1985-02-22 | Mecanum Innovation Ab | DIPOSITIVE FOR EXPLOITING THE MAXIMUM TORQUE OF THE DRIVE UNIT OF VEHICLE OR CONVEYOR DRIVE SYSTEMS |
-
1966
- 1966-07-26 GB GB3367166A patent/GB1196244A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2160163A5 (en) * | 1971-11-10 | 1973-06-22 | Cav Ltd | |
| FR2550871A1 (en) * | 1983-08-16 | 1985-02-22 | Mecanum Innovation Ab | DIPOSITIVE FOR EXPLOITING THE MAXIMUM TORQUE OF THE DRIVE UNIT OF VEHICLE OR CONVEYOR DRIVE SYSTEMS |
| GB2145045A (en) * | 1983-08-16 | 1985-03-20 | Mecanum Innovation Ab | Device for exploiting the maximum drive unit torque of the drives of vehicles or conveyors |
| US4598782A (en) * | 1983-08-16 | 1986-07-08 | Mecanum Innovation Ab | Device for exploiting the maximum drive unit torque of the drives of vehicles or conveyers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |