Typewriting machines – Key-board or key lever-actuating mechanism – Key lever or space-bar mounting structure
Patent
1999-01-05
2000-05-02
Hilten, John S.
Typewriting machines
Key-board or key lever-actuating mechanism
Key lever or space-bar mounting structure
200344, B41J 508
Patent
active
060564598
ABSTRACT:
A balance device for key comprises two balance rods each arranged on the front side and rear side of the cap of the key. The two balance rods are arranged in a forficiform arrangement. The base plate of the key and the cap being provided with pivoting parts such that the balance rods being pivotably engaged within the pivoting part. Therefore, the key can be uniformly pressed, no matter where the pressing force for key is applied.
REFERENCES:
patent: 4433225 (1984-02-01), Cowles
patent: 4580022 (1986-04-01), Oelsch et al.
patent: 5819914 (1998-10-01), Yoneyama
patent: 5823325 (1998-10-01), Lin
patent: 5941373 (1999-08-01), Cheng
Chicony Electronics Co. Ltd.
Hilten John S.
Sandusky Amanda B.
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