Field-replaceable battery pack and method for underground installations
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United States of America Patent
Stats
-
Dec 19, 1995
Grant Date -
N/A
app pub date -
Oct 11, 1994
filing date -
Oct 11, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
At least one new battery (60, 61) is added to a transponder unit (10) used in a subsurface pit enclosure (11), by removing a transponder housing (25, 26) from the pit enclosure (11), removing a breakout portion (33) of a top wall (32) of the transponder housing (25, 26) to provide an access opening (52) to access a pair of transponder terminals (50, 51) in the transponder housing (25, 26), mounting a battery (60, 61) sealed in a battery casing (62) to a side of the transponder housing (25, 26), with a pair of battery pack leads (47, 48) extending from the battery casing (62), connecting the battery pack leads (47, 48) to the transponder terminals (50, 51) in the transponder housing (25, 26), and providing a sealed battery pack cover (41) over both a top opening (65) in the battery casing (62) and the access opening (32) in the transponder housing ( 25, 26).
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