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Browse Prior Art Database

INTERLOCK DEVICE

IP.com Disclosure Number: IPCOM000026134D
Original Publication Date: 1990-Aug-31
Included in the Prior Art Database: 2004-Apr-05
Document File: 2 page(s) / 81K

Publishing Venue

Xerox Disclosure Journal

Abstract

An interlock device is associated with two slidable assemblies (for example, the paper trays of a copier or the drawers of a filing cabinet) to prevent both assemblies from being moved to a withdrawn position at the same time. In the drawing, the slidable assemblies are indicated by the references 1,2 and are movable to the withdrawn position in the direction of the arrow (9), i.e., to the right as seen in the drawing. The interlock device comprises a cam (3) which is pivotally-mounted (at 4) and has opposed hook-shaped recesses (5,6) each of which is co-operable with a pin (7,8) on a respective one of the assemblies (1,2); in the neutral position shown in the drawing, each pin is located in the mouth of its respective recess.

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Page 1 of 2

XEROX DISCLOSURE JOURNAL

INTERLOCK DEVICE

Classification Proposed J. J. Masters U.S. C1.0741567

Int. C1. F16h 53/00

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XEROX DISCLOSURE JOURNAL - Vol. 15, No. 4 July/August 1990 191

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Page 2 of 2

INTERLOCK DEVICE(Cont'd)

An interlock device is associated with two slidable assemblies (for example, the paper trays of a copier or the drawers of a filing cabinet) to prevent both assemblies from being moved to a withdrawn position at the same time. In the drawing, the slidable assemblies are indicated by the references 1,2 and are movable to the withdrawn position in the direction of the arrow (9), i.e., to the right as seen in the drawing. The interlock device comprises a cam (3) which is pivotally-mounted (at 4) and has opposed hook-shaped recesses (5,6) each of which is co-operable with a pin (7,8) on a respective one of the assemblies (1,2); in the neutral position shown in the drawing, each pin is located in the mouth of its respective recess.

If one only of the assemblies, e.g., the assembly (l), is moved to the withdrawn position, its pin (7) engages a heel (10) on the cam and pushes the latter in a clockwise direction (as seen in the drawing) about the pivot (4) until the pin (8) of the second assembly (2) engages in the bottom of its respective recess (6). An over-centre action to this movement of the cam is provided by a spring (11). When the cam (3) has been rotated, the pin (7) can move freely...