Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

ESD Inhibiting Key Lock Assembly

IP.com Disclosure Number: IPCOM000047899D
Original Publication Date: 1983-Dec-01
Included in the Prior Art Database: 2005-Feb-08
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Harding, JM: AUTHOR [+2]

Abstract

This article describes a snap-together key lock assembly having non-metallic components for inhibiting electrostatic discharge (ESD). The key lock assembly would be used in point-of-sale terminals or other devices where electrostatic discharges are potentially hazardous both to users and to the devices. Referring to Fig. 1, a molded plastic lock cylinder 10 is snapped into a panel mount 12 and is held in place by beam spring retaining tabs 14. The opening in the panel mount 12 and the lock cylinder 10 are double-D shaped to keep the lock cylinder 10 from rotating within the panel mount. A key 16 is inserted into a molded plastic lock plug 18 which preferably has metal tumblers and springs. The key is rotated to align the lock tumblers with a grooved keyway inside the lock cylinder 10.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 65% of the total text.

Page 1 of 2

ESD Inhibiting Key Lock Assembly

This article describes a snap-together key lock assembly having non-metallic components for inhibiting electrostatic discharge (ESD).

The key lock assembly would be used in point-of-sale terminals or other devices where electrostatic discharges are potentially hazardous both to users and to the devices. Referring to Fig. 1, a molded plastic lock cylinder 10 is snapped into a panel mount 12 and is held in place by beam spring retaining tabs 14. The opening in the panel mount 12 and the lock cylinder 10 are double-D shaped to keep the lock cylinder 10 from rotating within the panel mount. A key 16 is inserted into a molded plastic lock plug 18 which preferably has metal tumblers and springs. The key is rotated to align the lock tumblers with a grooved keyway inside the lock cylinder 10. An electrical switch assembly 20 and the lock cylinder 10 have anti-rotational keyways 22 and 24, respectively. These keyways are aligned, and switch assembly 20 is snapped onto the lock cylinder 10. The switch assembly 20 includes a square opening which mates with a square shaft 26 on the lock plug 18. The switch assembly 22 is rotated when the lock shaft 26 is rotated by the key
16. The switch assembly includes retaining latches 28 which are seated in a groove (not shown) within the lock cylinder 10 to securely fasten the two units. A locking cam 30 is snap-mounted onto the end of square shaft 26 and is held in place by tabs 32. The key 16 may be p...