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:
Aug. 05, 1986
Filed:
Feb. 01, 1983
Guy Barski, Paris, FR;
CII Honeywell Bull, , FR;
Abstract
A magnetic disc cartridge is adapted to be selectively inserted into a receptacle of a magnetic disc memory unit having a head for transducing magnetic data of a disc of the cartridge. The memory unit has a disc drive shaft having: (a) a rotation axis, (b) a reference plane at right angles to the rotation axis, and (c) a flange coaxial with the rotation axis. The cartridge includes a hub for coupling the drive shaft to the disc so the disc is turned by the drive shaft while the cartridge is in the receptacle. The hub and drive shaft axes are substantially coincident and invariably located at the same position when the cartridge is in the receptacle, a result achieved by a structure for precentering the cartridge with respect to the rotation axis and an elastically deformable structure mounted on the hub. The deformable structure has a first surface generally at right angles to the hub axis of rotation and a second surface extending coaxially with an axis of the hub. The elastic structure is deformed when the cartridge is in the receptacle so the first and second surfaces are respectively urged against the reference plane and coaxial flange to frictionally hold the elastic structure in situ against the reference plane and coaxial flange and repeatedly position the hub axis at the same location relative to the rotation axis.