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Multiple Input Spring Clutch

IP.com Disclosure Number: IPCOM000093320D
Original Publication Date: 1967-Aug-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Killam, DG: AUTHOR [+4]

Abstract

Output shaft 10 can be selectively driven either by input pulley 11 or input pulley 12. Pulley 1 1 is driven continuously and input pulley 12 is driven intermittently by sources not shown. Pulley 11 is suitably journaled on a reduced diameter section of shaft 10. Pulley 12 is journaled by one-way bearing 16 on sleeve 17 which is fixed to shaft 10. Pulley 12 drives 10 through 16. Sleeve 17 is provided with slot 18 for receiving one end of spring 13. Thus, shaft 10 is normally driven intermittently by input pulley 12 and can be disengaged from 12 and coupled to 11 when spring 13 is caused to tightly wrap hub 14 of 11. Normally, the outer peripheral surface of spring 13 is expanded against the inner surface of hub 15 and sleeve 17. Hub 15 extends from pulley 12.

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Multiple Input Spring Clutch

Output shaft 10 can be selectively driven either by input pulley 11 or input pulley 12. Pulley 1 1 is driven continuously and input pulley 12 is driven intermittently by sources not shown. Pulley 11 is suitably journaled on a reduced diameter section of shaft 10. Pulley 12 is journaled by one-way bearing 16 on sleeve 17 which is fixed to shaft 10. Pulley 12 drives 10 through 16. Sleeve 17 is provided with slot 18 for receiving one end of spring 13. Thus, shaft 10 is normally driven intermittently by input pulley 12 and can be disengaged from 12 and coupled to 11 when spring 13 is caused to tightly wrap hub 14 of 11. Normally, the outer peripheral surface of spring 13 is expanded against the inner surface of hub 15 and sleeve 17. Hub 15 extends from pulley 12. With this arrangement, shaft 10 cannot be overthrown upon stopping 12 because 13 expands against 15 and 17.

Spring 13 is selectively caused to wrap hub 14 as radial inwardly directed pressure is placed upon collar 20. Collar 20 is freely supported relative to member 21 by pins 22 which are fixed to extend laterally to the side from 20 into outwardly opening slots formed in 21.

Member 21 is freely supported relative to pulley 11 by pins 25 which extend from 11 into outwardly opening slots 26 formed in 21. Thus 20 is driven by 11 through coupling member 21. Inward radial pressure is selectively applied to 20 through a roller 30 carried at one end of an arm 31. Arm 31 is selectively...