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:
Mar. 18, 1986
Filed:
Apr. 10, 1984
Nobuaki Omata, Yokohama, JP;
Nifco Inc., Yokohama, JP;
Abstract
A rotation damper comprises a base member, a gear wheel rotatably mounted on the base member via a damper, a spiral spring having one end attached to a cap member and the other end attached to the gear wheel and adapted to be wound up with the rotation of the gear wheel, and a locking member for locking the spiral spring in or releasing it from the wound-up state. When the gear wheel is rotated to the neighborhood of a limit position against the spring force of the spiral spring, the spiral spring is locked in the wound-up state. The spiral spring is released from the wound-up state by further rotating the gear wheel. The rotation damper is applicable to a cassette holder of a cassette tape recorder, for instance, and permits the holder to be opened and closed under braking force while eliminating the need for a separate holder locking mechanism.