CA1005182A - Interlocking pushbutton keys for a key telephone set - Google Patents

Interlocking pushbutton keys for a key telephone set

Info

Publication number
CA1005182A
CA1005182A CA186,715A CA186715A CA1005182A CA 1005182 A CA1005182 A CA 1005182A CA 186715 A CA186715 A CA 186715A CA 1005182 A CA1005182 A CA 1005182A
Authority
CA
Canada
Prior art keywords
telephone set
key telephone
pushbutton keys
interlocking
interlocking pushbutton
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
CA186,715A
Other languages
English (en)
Inventor
Isao Kunimine
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.)
Nippon Tsushin Kogyo KK
Tie Communications Inc
Original Assignee
Nippon Tsushin Kogyo KK
Tie Communications Inc
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 Nippon Tsushin Kogyo KK, Tie Communications Inc filed Critical Nippon Tsushin Kogyo KK
Application granted granted Critical
Publication of CA1005182A publication Critical patent/CA1005182A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/72—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard wherein the switch has means for limiting the number of operating members that can concurrently be in the actuated position
    • H01H13/74—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard wherein the switch has means for limiting the number of operating members that can concurrently be in the actuated position each contact set returning to its original state only upon actuation of another of the operating members
CA186,715A 1973-01-31 1973-11-26 Interlocking pushbutton keys for a key telephone set Expired CA1005182A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1973012877U JPS5443330Y2 (ko) 1973-01-31 1973-01-31

Publications (1)

Publication Number Publication Date
CA1005182A true CA1005182A (en) 1977-02-08

Family

ID=11817636

Family Applications (1)

Application Number Title Priority Date Filing Date
CA186,715A Expired CA1005182A (en) 1973-01-31 1973-11-26 Interlocking pushbutton keys for a key telephone set

Country Status (3)

Country Link
US (1) US3927283A (ko)
JP (1) JPS5443330Y2 (ko)
CA (1) CA1005182A (ko)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4122316A (en) * 1976-01-28 1978-10-24 Alps Electric Co., Ltd. Push button switch assembly having independent operator interlock in at least two rows latching at least one operator
JPS567058Y2 (ko) * 1977-06-08 1981-02-16
US4205557A (en) * 1977-08-26 1980-06-03 Trw Inc. Interlocking apparatus
JPS6220106Y2 (ko) * 1979-04-20 1987-05-22
US4628153A (en) * 1984-12-17 1986-12-09 Marshall Daly Stand-alone keyphone system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2932816A (en) * 1958-05-19 1960-04-12 Sperry Rand Corp Keyboard transmitter
US3358090A (en) * 1963-03-11 1967-12-12 Samuel H Smith Pushbutton control with retaining and disabling means
US3271530A (en) * 1965-01-12 1966-09-06 Bell Telephone Labor Inc Pushbutton switch with latching, lockout and indicator lamp structure
JPS435459Y1 (ko) * 1966-11-01 1968-03-09
US3678357A (en) * 1968-10-09 1972-07-18 Dynamic Corp Of America Multiple push button switch speed control system
US3646283A (en) * 1970-04-20 1972-02-29 Globe Union Inc Multistation pushbutton switch assembly with master control means for alternative push-push or only one switch operable at a time modes of actuation
US3706863A (en) * 1970-09-11 1972-12-19 Seeburg Corp Multiple switch assembly for vending machine selecting apparatus with improved master switch control
US3719786A (en) * 1971-04-02 1973-03-06 Ark Les Switch Corp Pushbutton slide switch assemblies with interconnected laminated slider switch set assemblies allowing only one activated switch in a particular set
US3778564A (en) * 1972-07-07 1973-12-11 Honeywell Inc Switch resetting apparatus for multi-bank push button switches

Also Published As

Publication number Publication date
JPS49114804U (ko) 1974-10-01
US3927283A (en) 1975-12-16
JPS5443330Y2 (ko) 1979-12-14

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