Browse Prior Art Database

Top Deck Detent

IP.com Disclosure Number: IPCOM000095351D
Original Publication Date: 1965-Dec-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Junge, B: AUTHOR [+2]

Abstract

This device detents a member at one of three positions and provides feedback information as to both actual member position and whether the detent is engaged. Each unit to be detented is provided with a detent rack containing three notches. A spring-biased detent engages one of the notches for detenting. When a unit is to be moved to a new position the detent is retracted by an actuator.

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Top Deck Detent

This device detents a member at one of three positions and provides feedback information as to both actual member position and whether the detent is engaged. Each unit to be detented is provided with a detent rack containing three notches. A spring-biased detent engages one of the notches for detenting. When a unit is to be moved to a new position the detent is retracted by an actuator.

Indications of proper detenting are obtained through use of a ferrous detent flag. This is moved from between two reed switches and their associated actuating permanent magnets. A ferrous position flag attached to the rack is centered between the two sets of reed switch-magnet combinations. Such occurs when the rack is at its mid-position and is moved between one switch and its magnet depending on the direction of movement of the rack. A flag when positioned between a magnet and its associated reed switch shunts the flux of the magnet such that it cannot influence the switch.

Interrogation of the reed switches provides an indication as to whether the detent is home and if so which of the three positions the rack is in.

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