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High Speed Clutch

IP.com Disclosure Number: IPCOM000092674D
Original Publication Date: 1967-Feb-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 48K

Publishing Venue

IBM

Related People

Orlando, AW: AUTHOR

Abstract

The high-speed clutching arrangement controls capstan 11 for quick start-stop operations. Capstan 11 is supported on shaft 12 which is connected to a pair of disk clutches 7a and 7b. Each of the latter is surrounded by circular housing 16a and 16b respectively. Each housing has a back part adjacent solenoid coil 9a or 9b which is surrounded by magnetically permeable core 10a or 10b, separated into two magnetic parts by nonmagnetic rings 4a or 4b.

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High Speed Clutch

The high-speed clutching arrangement controls capstan 11 for quick start- stop operations. Capstan 11 is supported on shaft 12 which is connected to a pair of disk clutches 7a and 7b. Each of the latter is surrounded by circular housing 16a and 16b respectively. Each housing has a back part adjacent solenoid coil 9a or 9b which is surrounded by magnetically permeable core 10a or 10b, separated into two magnetic parts by nonmagnetic rings 4a or 4b.

The opposite side of each clutch 7a and 7b has a magnetic armature 17a and 17b which is only connected to housing 16a or 16b by a flexible diaphragm 21a or 21b made of MYLAR*. Clutch housings 16a and 16b and armatures 17a and 17b provide substantially closed magnetic paths when the respective solenoid 9a or 9b is energized. Thus the armature then moves and clamps its thin flexible disk clutch 7a or 7b.

Housing 16a is nonrotationally fixed by screws 18 to the housing of solenoid 9a so that when solenoid 9a is actuated, capstan 11 is braked. On the other hand, housing 16b is maintained in rotation at a constant speed by a motor, not shown, connected to shaft 13. Solenoid 9b can lie fixed to frame 19 which supports the entire assembly. Thus, magnetic actuation of solenoid 9b combined with deactuation of solenoid 9a causes capstan 11 to be locked to shaft 13. This is effected through the clamping of disk clutch 7b between armature 17b and rotating housing 16b. Capstan 1 1 is quickly brought from a stopped...