Abstract: An improved mandrel for use on a dual bobbin spindle apparatus, the mandrel being an expandable contractible cylindrical sleeve having a plurality of expansion members and at least one interstitial resilient member separating the expansion members, providing positive engagement of a plurality of reels or bobbins containing wound webs of flexible material.
Type:
Grant
Filed:
February 24, 1998
Date of Patent:
January 2, 2001
Assignee:
Philip Morris Management Corp.
Inventors:
William H. Stevens, Keith Richard Koenig, Robert Eugene Marcum
Abstract: A flywheel device for use in a magnetic recording/reproducing unit or the like which device is simple in construction, and can be produced at low costs, and a method of making it. A capstan shaft is press-fitted in a hole formed in a central portion of a metal disk, and then a resin is filled on an outer peripheral portion and a central portion of the disk by outsert molding to form an outer peripheral resin portion and a central resin portion. The outer peripheral resin portion has a groove formed in an outer periphery thereof, and the central resin portion has gear portions.
Type:
Grant
Filed:
April 14, 1997
Date of Patent:
October 13, 1998
Assignee:
Matsushita Electric Industrial Co., Ltd.