Dismiss
The InnovationQ application will be updated on Sunday, May 31st from 10am-noon ET. You may experience brief service interruptions during that time.
Browse Prior Art Database

Slotted Drive Nut

IP.com Disclosure Number: IPCOM000041492D
Original Publication Date: 1984-Feb-01
Included in the Prior Art Database: 2005-Feb-02

Publishing Venue

IBM

Related People

Authors:
Maurer, F Vicari, JC [+details]

Abstract

When a half or full nut must engage onto a revolving lead screw, non-alignment between the screw and nut is prevalent. Non-alignment causes the nut threads to deteriorate rapidly. Disclosed herein is a drive nut, the first pitch root thread of which is slotted to thereby create a flexure at the front of the nut. The nut then can accommodate misalignment without thread deterioration. Referring to Fig. 1, a half nut is mounted on a carrier 2 to engage lead screw 3 and permit the carrier to controllable scan in the horizontal direction. Referring to Fig. 2A, the improved half nut 1 includes a slot in the first pitch root thread. The flexure acts as a shock absorber, and also absorbs premature (Fig. 2B) and delayed (Fig. 2C) misalignments without deterioration of the nut.