Browse Prior Art Database

Switch Operation Protection

IP.com Disclosure Number: IPCOM000083967D
Original Publication Date: 1975-Aug-01
Included in the Prior Art Database: 2005-Mar-01
Document File: 2 page(s) / 36K

Publishing Venue

IBM

Related People

Nordby, JO: AUTHOR

Abstract

A standard pushbutton switch actuator is modified so as to provide protection against inadvertent switch actuation.

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Switch Operation Protection

A standard pushbutton switch actuator is modified so as to provide protection against inadvertent switch actuation.

Switch actuator 10, Fig. 1, which also functions as a lens, normally operates the switch of switch assembly 20. Actuator 10 is modified whereby it still functions as a lens but is no longer moveable, and thus does not function as the switch actuator. It is provided with a central thru-hole 12 for slidably receiving stem 16 of actuator 15.

End 17 of actuator 15 in its normal unoperated position is flush with surface 11 of actuator 10, see Fig. 2. This arrangement requires an intentional depression of actuator 15 for operation of the switch in assembly 20.

The nonmoveable actuator 10, guards against unintentional operation of the switch. This unintentional operation heretofore was caused by accidental body contact with the switch actuator 10. An operator's elbow or arm would accidentally depress the rather prominent switch actuator 10. However, by making actuator 10 nonmoveable and restricting movement to central actuator 15, accidental operation is virtually eliminated.

The existing housing 21 of switch assembly 20 is able to accept modified actuator 10 and actuator 15 without being reworked. Thus, machines having the unmodified switch actuator can be provided with actuators 15 without the expense of reinstallation of the switch assembly 20. The old actuator is merely removed and the new one is snapped into place.

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