Chemistry: electrical current producing apparatus – product – and – Having polarity safety feature
Patent
1986-11-10
1988-06-21
Hearn, Brian E.
Chemistry: electrical current producing apparatus, product, and
Having polarity safety feature
429 97, 429 98, 429100, 220348, 220351, H01M 200, H01M 210
Patent
active
047525398
ABSTRACT:
A receiver for a laser transmitter for use in surveying, comprising a housing and a sensor module pivotably mounted on the housing so that, by pivoting the sensor module relative to the housing, the device can detect a laser signal coming from sources at various angles to the housing. Also, a battery receptacle comprising a housing which defines a cavity and an opening at one end of the cavity for receiving a battery. First and second recesses are formed at the other end of said cavity and are shaped to receive terminals on a battery which is inserted in the cavity. First and second electrically conductive springs are mounted in the first and second slots, respectively. A door is mounted on the housing to close the opening and to retain a battery in the cavity.
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U.S. Application Ser. No. 788,800, Filed 10/18/85-Assignee: Spectra-Physics, Inc., Inventor: Joseph Rando et al.
Hearn Brian E.
Kalafut Stephen J.
Spectra-Physics Inc.
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