Browse Prior Art Database

Leadscrew Locking Device

IP.com Disclosure Number: IPCOM000080282D
Original Publication Date: 1973-Nov-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Jacobs, HM: AUTHOR

Abstract

The drawing shows a leadscrew locking device. All parts shown are attached, either fixedly or movably, to a carrier, not shown, except the leadscrew which is supported on a power frame.

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Leadscrew Locking Device

The drawing shows a leadscrew locking device. All parts shown are attached, either fixedly or movably, to a carrier, not shown, except the leadscrew which is supported on a power frame.

The drive nut 10 and lock nut 12 fit freely on the leadscrew 14, thus allowing a low-drag force while driving the carrier. During an operation requiring carrier travel, the locking cam 16 is on high dwell holding the lock nut 12 away from the drive nut 10. After a carrier travel and prior to a fixed location operation, the locking cam 16 rotates to low dwell allowing the spring 18 to rotate the lock nut 12, forcing it against the drive nut 10. This removes the clearance between the leadscrew 14 and drive nut 10, so the carrier will be accurately positioned. After the operation, the locking cam 16 restores the lock nut 12 to its initial position freeing the drive nut 10 so the carrier can escape.

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