GB2013984A - Improvements in or relating to controls and control circuitry for electrical devices - Google Patents
Improvements in or relating to controls and control circuitry for electrical devicesInfo
- Publication number
- GB2013984A GB2013984A GB7900311A GB7900311A GB2013984A GB 2013984 A GB2013984 A GB 2013984A GB 7900311 A GB7900311 A GB 7900311A GB 7900311 A GB7900311 A GB 7900311A GB 2013984 A GB2013984 A GB 2013984A
- Authority
- GB
- United Kingdom
- Prior art keywords
- block
- controls
- control
- length
- finger pressure
- 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.)
- Withdrawn
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
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/10—Commutator motors, e.g. repulsion motors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Push-Button Switches (AREA)
Abstract
A finger-pressure responsive control comprises a resilient elongate block (211) electrically conductive foam material to the opposite ends of which are applied respective electrical contacts (212, 213) across which a voltage is applied to set up a potential gradient along the length of the block. At least one strip-like contact (216) extends the length of the block so that finger pressure applied to the control at a particular location lengthwise of the block causes the potential at that location to appear as an output at the strip-like contact. Also disclosed is control circuitry for controlling an electrical device which includes user operable, finger pressure responsive controls for producing analogue outputs proportional to the finger pressure on each control and circuitry for controlling the speed of, and length of operation of an electric motor in dependence upon the analogue outputs from the controls. <IMAGE>
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7900311A GB2013984A (en) | 1977-12-30 | 1979-01-04 | Improvements in or relating to controls and control circuitry for electrical devices |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5435877 | 1977-12-30 | ||
GB7900311A GB2013984A (en) | 1977-12-30 | 1979-01-04 | Improvements in or relating to controls and control circuitry for electrical devices |
Publications (1)
Publication Number | Publication Date |
---|---|
GB2013984A true GB2013984A (en) | 1979-08-15 |
Family
ID=26267447
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7900311A Withdrawn GB2013984A (en) | 1977-12-30 | 1979-01-04 | Improvements in or relating to controls and control circuitry for electrical devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2013984A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2222029A (en) * | 1988-03-04 | 1990-02-21 | Touch Panel Prod Ltd | Pressure sensitive potentiometer |
DE19623793C1 (en) * | 1996-06-14 | 1998-03-12 | Still Wagner Gmbh & Co Kg | Control element for a drawbar-guided industrial truck |
-
1979
- 1979-01-04 GB GB7900311A patent/GB2013984A/en not_active Withdrawn
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2222029A (en) * | 1988-03-04 | 1990-02-21 | Touch Panel Prod Ltd | Pressure sensitive potentiometer |
GB2222029B (en) * | 1988-03-04 | 1991-05-01 | Touch Panel Prod Ltd | A potentiometer |
DE19623793C1 (en) * | 1996-06-14 | 1998-03-12 | Still Wagner Gmbh & Co Kg | Control element for a drawbar-guided industrial truck |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |