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. 12, 1998
Filed:
Dec. 12, 1996
Keum-Mo Kim, Seoul, KR;
Daewoo Electronics Co., Ltd., Seoul, KR;
Abstract
Disclosed is a head drum assembly of a video cassette recorder which can support the radial load and the thrust load of the shaft. The head drum assembly includes a lower drum, an upper drum, a motor for generating a rotational force, a shaft for transferring the rotational force of the motor to the upper drum, a housing formed at an inner portion thereof with lubricant containing grooves, lubricating pads for containing the lubricant and being inserted into the lubricant containing grooves, bearings inserted into the housing, and a shield plate disposed between the bearing and the upper drum, for preventing the evaporation of the lubricant of the bearing. The radial load and thrust load of the shaft are effectively supported, a long term lubrication can be achieved by the prevention of the evaporation of lubricant in the bearing, and jittering and wow-fluttering can be prevented while recording a video information onto a magnetic tape or reproducing the video information from the magnetic tape.