MX3894E - Mejoras en interruptor con tablero de circuito impreso para un teclado tipo calculadora - Google Patents

Mejoras en interruptor con tablero de circuito impreso para un teclado tipo calculadora

Info

Publication number
MX3894E
MX3894E MX10052977U MX10052977U MX3894E MX 3894 E MX3894 E MX 3894E MX 10052977 U MX10052977 U MX 10052977U MX 10052977 U MX10052977 U MX 10052977U MX 3894 E MX3894 E MX 3894E
Authority
MX
Mexico
Prior art keywords
switch
circuit board
printed circuit
type keyboard
calculator type
Prior art date
Application number
MX10052977U
Other languages
English (en)
Spanish (es)
Inventor
Theodore Dennis Smith
Original Assignee
Rca Corp
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
Priority claimed from US05/748,025 external-priority patent/US4084071A/en
Application filed by Rca Corp filed Critical Rca Corp
Publication of MX3894E publication Critical patent/MX3894E/es

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
    • H01H13/7013—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 in which the movable contacts of each switch site or of a row of switch sites are formed in a single plate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2203/00—Form of contacts
    • H01H2203/036—Form of contacts to solve particular problems
    • H01H2203/038—Form of contacts to solve particular problems to be bridged by a dome shaped contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2203/00—Form of contacts
    • H01H2203/036—Form of contacts to solve particular problems
    • H01H2203/054—Form of contacts to solve particular problems for redundancy, e.g. several contact pairs in parallel
MX10052977U 1976-12-06 1977-12-05 Mejoras en interruptor con tablero de circuito impreso para un teclado tipo calculadora MX3894E (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US74802676A 1976-12-06 1976-12-06
US05/748,025 US4084071A (en) 1976-12-06 1976-12-06 Switch mechanism for a calculator type keyboard

Publications (1)

Publication Number Publication Date
MX3894E true MX3894E (es) 1981-09-08

Family

ID=27114860

Family Applications (1)

Application Number Title Priority Date Filing Date
MX10052977U MX3894E (es) 1976-12-06 1977-12-05 Mejoras en interruptor con tablero de circuito impreso para un teclado tipo calculadora

Country Status (8)

Country Link
JP (1) JPS6051216B2 (it)
CA (1) CA1104235A (it)
DE (1) DE2754296C3 (it)
FI (1) FI64477C (it)
FR (1) FR2373136A1 (it)
GB (1) GB1592283A (it)
IT (1) IT1088702B (it)
MX (1) MX3894E (it)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4436970A (en) * 1982-06-07 1984-03-13 Methode Electronics, Inc. Switch assemblies
JPH044338Y2 (it) * 1985-05-31 1992-02-07
JPH0437138Y2 (it) * 1986-10-24 1992-09-01
GB2308499B (en) * 1995-12-22 2000-03-15 Nokia Mobile Phones Ltd A contact membrane for a keypad assembly

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3600528A (en) * 1969-09-25 1971-08-17 Lematex Corp Multiple switch construction
DE7437240U (de) * 1974-11-08 1975-08-07 Blaupunkt Werke Gmbh Tastenschaltersystem

Also Published As

Publication number Publication date
FR2373136B1 (it) 1981-01-16
FR2373136A1 (fr) 1978-06-30
FI64477B (fi) 1983-07-29
DE2754296A1 (de) 1978-06-08
CA1104235A (en) 1981-06-30
JPS5386477A (en) 1978-07-29
IT1088702B (it) 1985-06-10
FI773604A (fi) 1978-06-07
DE2754296B2 (de) 1980-08-21
GB1592283A (en) 1981-07-01
JPS6051216B2 (ja) 1985-11-13
DE2754296C3 (de) 1981-05-21
FI64477C (fi) 1983-11-10

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