H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/346
H01H 3/00 (2006.01) H01H 33/12 (2006.01) H01H 33/666 (2006.01) H01R 11/14 (2006.01) H01H 33/66 (2006.01)
Patent
CA 1110683
TOOL FOR MAKING AND BREAKING LOAD CURRENTS Abstract of the Disclosure A portable tool for making and breaking high magnitude load currents is provided which is reliable in operation, can be used in applications lacking mechanical switching or cutout apparatus, and provides a secondary, visual assurance to the user when a load is broken. The device preferably includes a pair of vacuum bottle-enclosed, load- making and -breaking contacts, along with a series- connected pair of visually observable contacts exteriorly of the vacuum bottle. Spring-biased operating mechanism assures that the bottle- enclosed contacts actually make and break the load current during use of the tool, while the secon- dary contacts are operated in sequenced relation- ship to the make and break contacts. When the device is used to break a current load, trans- parent portions of the tubular walls of the device permit the user to visually perceive a large open air gap between the secondary contacts.
330354
Chance (a. B.) Company
Gowling Lafleur Henderson Llp
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