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EP0064041A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Method of manufacturing a push button keyboard

Assignee: Telefonaktiebolaget LM Ericsson AB
•
Filing: 1982-04-06
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Granted: —
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Expires: 2002-04-06
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Abstract

Abstract A method of manufacturing one or more push buttons and associated case. The method is executed in two work operations with injection moulding moulds. Button (2) and case (1) are moulded jn the first operation so that the button (2) is cohesive with the case via two joining members (3a, 3b) formed one on either side of the button. In the second operation there is moulded a portion (8) under the button (2) for contact, e g with a connection mat or so-called «keypad», as well as locking lugs (6b) or stop means (61 b) preventing upward mouvement of the button after depression. Pressure is brought to bear on the upper surface of the button to separate it from the case.

Inventors

  • 👤 Horst Robert Adolf Ziegler

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-03 20:04
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/0053; B29C45/006; B29C45/16; H; H01; H01H; H01H11/00; H01H13/00; H01H13/70; H01H13/702; H01H13/705; B29C2045/0065; B29C2045/1681; B29L; B29L2031/00; B29L2031/46; B29L2031/466; H01H2229/00; H01H2229/044; H01H2229/046; H01H2233/00; H01H2233/002; H01H2233/004; H01H2233/006; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49789; Y10T29/4979; Y10T29/49796; Y10T29/49799; Y10T29/49826; Y10T29/49863; Y10T29/49876

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 88 words
1 _ A method of manufacturing, by injection moulding a plastics composition, one or more keyboard push buttons with associated case and with the buttons placed separate from the case, characterized in that each button (2) in the button set together with the case (1) is injection moulded in a first work operation, rigid cohesive joining members (3a, 3b) between each button (2) and case being formed, and that in a Later manufacturing step, the button or buttons are separated from the case by rupturing said joining members.
Claim 2
Dependent Claim 88 words
1 _ A method of manufacturing, by injection moulding a plastics composition, one or more keyboard push buttons with associated case and with the buttons placed separate from the case, characterized in that each button (2) in the button set together with the case (1) is injection moulded in a first work operation, rigid cohesive joining members (3a, 3b) between each button (2) and case being formed, and that in a Later manufacturing step, the button or buttons are separated from the case by rupturing said joining members.
Claim 3
Dependent Claim 59 words
2 A method as claimed in claim 1, characterized in that in a second . work operation consequtive on the first operation non-cohesive joining members (6a, 6b or 61a, 61b) are injection moulded, together with the symbols intended for each button as weLL as a central portion (8) intended to be situated under the upper surface of the button.
Claim 4
Dependent Claim 23 words
3 A method as claimed in CLaim 1, characterized in that said rupturing is executed by pressing.against the upper surface of the buttons.

References Cited (Backward Citations)

GB753410A Cited
GB1062481A Cited
US3489342A Cited
FR2254821A1 Cited
US4057710A Cited

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