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:
Jun. 06, 2000
Filed:
Oct. 24, 1997
Akira Sorimachi, Yokohama, JP;
Ratoh Electrical Machinery Co., Ltd., Kanagawa, JP;
Abstract
According to the invention, in order to obtain hinges which, even if small-sized, can create a great rotational torque and, moreover, permit ready alignment of details with the rotational moment of an opening/closing body, such as a lavatory seat or lid or accentuation of any part of the action thereof, there is provided a pair of composite torque hinges each consisting of; a rotating cylinder disposed to be rotatable around a fixed shaft; a cam mechanism which is provided within the rotating cylinder and on which a compression spring is caused to work so as to control the rotational torque of the rotating cylinder; and a torsion spring which is also provided within said rotating cylinder and functions in a direction to cancel the rotational torque of the rotating cylinder in a specific rotational direction.