The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 19, 2020
Filed:
Feb. 26, 2019
Applicant:
Primax Electronics Ltd., Taipei, TW;
Inventors:
Assignee:
PRIMAX ELECTRONICS LTD., Taipei, TW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/02 (2006.01); H01H 13/705 (2006.01); H01H 13/84 (2006.01); H01H 13/85 (2006.01); H01H 13/7065 (2006.01);
U.S. Cl.
CPC ...
H01H 13/84 (2013.01); G06F 3/0202 (2013.01); H01H 13/705 (2013.01); H01H 13/7065 (2013.01); H01H 13/85 (2013.01); H01H 2215/03 (2013.01);
Abstract
A keyboard device includes a key structure, a membrane wiring board and an elastic element. The elastic element is arranged between the key structure and the membrane wiring board. The key structure includes a sleeve, a plunger-type support shaft, a keycap and a resilience element. The plunger-type support shaft is movable upwardly or downwardly relative to the sleeve. When the keycap is depressed in response to an external force, the resilience element and the sleeve interfere with each other. Consequently, the keyboard device provides the operating sound and the operating feedback like a mechanical switch.