Browse Prior Art Database

REDUCED NOISE SINGLE REVOLUTION DRIVE CLUTCH

IP.com Disclosure Number: IPCOM000027716D
Original Publication Date: 1999-Feb-28
Included in the Prior Art Database: 2004-Apr-09
Document File: 2 page(s) / 75K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is a single revolution clutch that reduces noise created by the energy level or momentum of a drive mechanism. As shown in Figure 1, clutch 10 includes cams 12 and 14 that control the rotation and positioning of the clutch. Each cam includes an additional ramp. Figure 2 illustrates the inner cam 12 possessing a drive disengagement ramp 16 and pre-disengagement ramp 18. Likewise, Figure 3 shows the outer cam 14 having a stop position ramp 22 and a release ramp 20 for pre-disengagement.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 74% of the total text.

Page 1 of 2

XEROX DISCLOSURE JOURNAL

REDUCED NOISE SINGLE REVOLUTION DRIVE CLUTCH
James
D. Walsh

Proposed Classification
U. S. C1.
335/209 Int. C1. HOlf 01/100

- 70

FIG.

7

78 FIG. 2

22

FIG. 3

[This page contains 1 picture or other non-text object]

Page 2 of 2

REDUCED NOISE SINGLE REVOLUTION DRIVE CLUTCH (Cont'd)

Disclosed is a single revolution clutch that reduces noise created by the energy level or momentum of a drive mechanism. As shown in Figure 1, clutch 10 includes cams 12 and 14 that control the rotation and positioning of the clutch. Each cam includes an additional ramp. Figure 2 illustrates the inner cam 12 possessing a drive disengagement ramp 16 and pre-disengagement ramp 18. Likewise, Figure 3 shows the outer cam 14 having a stop position ramp 22 and a release ramp 20 for pre-disengagement.

Referring to Figure 1, clutch 10 activates by moving an actuation arm 24 that is usually driven by a solenoid (not shown), above the stop ramp 22 and ramp 16. Clutch 10 and cams 12 and 14 rotate together until the pre-disengagement ramp 18 contacts actuation arm 24. At this point, any mechanism (not shown) being driven is disconnected from the driving shaft (not shown). The mechanism and the outer cam 14 continue to rotate due to the momentum of the mechanism. Next, the release ramp 20 for pre-disengagement contacts the actuation arm 24, lifting the arm over ramp 18 to reactivate clutch 10. The disengagement ramp 16 then contacts actuation arm 24 disconnecting the drive shaft...