CA882296A - Mechanical-electrical code generating device - Google Patents

Mechanical-electrical code generating device

Info

Publication number
CA882296A
CA882296A CA882296A CA57741A CA882296A CA 882296 A CA882296 A CA 882296A CA 882296 A CA882296 A CA 882296A CA 57741 A CA57741 A CA 57741A CA 882296 A CA882296 A CA 882296A
Authority
CA
Canada
Prior art keywords
mechanical
generating device
code generating
electrical code
electrical
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
Application number
CA882296A
Other versions
CA57741S (en
Inventor
Mitchell William
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nortel Networks Ltd
Original Assignee
Northern Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Northern Electric Co Ltd filed Critical Northern Electric Co Ltd
Priority to CA882296A priority Critical patent/CA882296A/en
Priority to US844103A priority patent/US3603983A/en
Application granted granted Critical
Publication of CA882296A publication Critical patent/CA882296A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/967—Switches controlled by moving an element forming part of the switch having a plurality of control members, e.g. keyboard
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15C—FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
    • F15C1/00—Circuit elements having no moving parts
    • F15C1/001—Circuit elements having no moving parts for punched-card machines ; for typewriters ; for keyboards; for conveying cards or tape; for conveying through tubes ; for computers ; for dc-ac transducers for information processing ; for signal transmission
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06C—DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
    • G06C7/00—Input mechanisms
    • G06C7/02—Keyboards
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/24—Power arrangements internal to the switch for operating the driving mechanism using pneumatic or hydraulic actuator
CA882296A 1969-07-23 1969-07-23 Mechanical-electrical code generating device Expired CA882296A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA882296A CA882296A (en) 1969-07-23 1969-07-23 Mechanical-electrical code generating device
US844103A US3603983A (en) 1969-07-23 1969-07-23 Mechanical-electrical code generating device employing fluid switching

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US84410369A 1969-07-23 1969-07-23
CA882296A CA882296A (en) 1969-07-23 1969-07-23 Mechanical-electrical code generating device

Publications (1)

Publication Number Publication Date
CA882296A true CA882296A (en) 1971-09-28

Family

ID=25666135

Family Applications (1)

Application Number Title Priority Date Filing Date
CA882296A Expired CA882296A (en) 1969-07-23 1969-07-23 Mechanical-electrical code generating device

Country Status (2)

Country Link
US (1) US3603983A (en)
CA (1) CA882296A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3757319A (en) * 1971-04-05 1973-09-04 Eaton Corp Security alarm system with bypass
US4258356A (en) * 1978-04-03 1981-03-24 Scm Corporation Multi bar encoding apparatus utilizing acoustic energy
US4316674A (en) * 1980-03-31 1982-02-23 International Business Machines Corporation Keylever pawl tube spring and keyboard utilizing a keylever pawl tube spring
USRE32419E (en) * 1981-03-16 1987-05-12 Engineering Research Applications, Inc. Molded keyboard and method of fabricating same
NZ215956A (en) * 1985-04-29 1988-07-28 Macfarlane A & K Pty Ltd Variable keystroke pressure keyboard: pressure regulated bag compressible between the keyboard base and keys
JPH0685822B2 (en) * 1987-08-06 1994-11-02 株式会社カプコン Video game machine
US4990900A (en) * 1987-10-01 1991-02-05 Alps Electric Co., Ltd. Touch panel
US4882459A (en) * 1987-11-02 1989-11-21 Square D Company Pressure sensitive switch having rugged construction and accurate trip pressure settings
US5252796A (en) * 1989-12-01 1993-10-12 Hedger John T Signal tube operated switches
US5742242A (en) * 1996-12-19 1998-04-21 Compaq Computer Corporation Keyboard using pressurized fluid to generate key stroke characteristics
GB0414437D0 (en) * 2004-06-28 2004-07-28 Sensitivity Ltd Actuation apparatus
ATE393425T1 (en) * 2004-06-28 2008-05-15 John Peter Holland ACTUATING DEVICE
US20080131184A1 (en) * 2005-09-19 2008-06-05 Ronald Brown Display key, display keyswitch assembly, key display assembly, key display, display data entry device, display PC keyboard, and related methods
US20110107958A1 (en) * 2009-11-12 2011-05-12 Apple Inc. Input devices and methods of operation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL270860A (en) * 1960-10-31 1900-01-01
US3248052A (en) * 1964-06-25 1966-04-26 Sperry Rand Corp Keyboard encoder
US3500311A (en) * 1967-05-09 1970-03-10 Wagner Electric Corp Vehicle dual brake condition responsive indicating system
US3491945A (en) * 1967-07-18 1970-01-27 Honeywell Inc Fluid pressure signal converter

Also Published As

Publication number Publication date
US3603983A (en) 1971-09-07

Similar Documents

Publication Publication Date Title
CA882296A (en) Mechanical-electrical code generating device
CA941426A (en) Hair-setting device
CA918274A (en) Character generator
CA950358A (en) Vaccines
CA919951A (en) Force generator
YU304370A (en) Stranska stena
SU592908A1 (en) Ballast-compacting device
CA817394A (en) Vaccines
CA841789A (en) Code generator
CA920979A (en) Ozone generator
AU436470B2 (en) Improvements in or relating toa. c. generator devices
CA785870A (en) Code generating mechanism
CA823429A (en) Booster device
CA823428A (en) Booster device
CA715216A (en) Code signal generator
CA787573A (en) False code generator
CA822349A (en) Radioisotope generator
AU441784B2 (en) Percussion device
CA815604A (en) Code transmitter
CA824904A (en) Mechanical programming device
AU417693B2 (en) Electro-mechanical function generator
CA929266A (en) Electro-mechanical function generator
CA828932A (en) Function generator
CA826028A (en) Appareil de levage
CA901126A (en) Mechanical-electrical transducer