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:
Oct. 23, 2001
Filed:
May. 16, 2000
Katsuya Imai, Tokyo, JP;
Sugatsune Kogyo Co., Ltd., Tokyo, JP;
Abstract
There is provided a hinge device for a foldable apparatus which comprises a first member provided with a first hinge sleeve rigidly secured thereto and with a first abutment peripheral edge and a second member provided with a second hinge sleeve with a second abutment peripheral edge slidably held in abutment with the first abutment peripheral edge; wherein said hinge device further comprises a first disk unrotatably fitted into said first hinge sleeve and a second disk unrotatably fitted into said second hinge sleeve; and either the first abutment facet of the first disk or the second abutment facet of the second disk being provided with a plurality of engaging recesses arranged at predetermined angular positions thereof; the other being provided with a plurality of engaging projections adapted to become engaged with the each engaging recesses under the effect of resilient force of a coil spring, the engagement of said engaging projections and said engaging recesses being switched by an opening or closing motion of the first and second members;