Optical: systems and elements – Mirror – With support
Patent
1993-01-29
1994-09-06
Look, Edward K.
Optical: systems and elements
Mirror
With support
359367, 128 4, G02B 2300, G02B 700
Patent
active
053453395
ABSTRACT:
A motorized mirror assembly attaches to a borescope insertion tube for rotating a mirror to provide side viewing capability. A housing for a motor/gearbox has an access port at one end that provides access to a shaft driven by the motor/gearbox for attachment to a side-viewing mirror. The assembly includes a battery enclosure into which a battery is inserted. The housing and battery enclosure have diameters that do not exceed the diameter of the borescope insertion tube. Power is switchably supplied to the motor/gearbox by an arrangement in which a ring retainer is connected to the housing, and a compression spring is mounted in electrical contact with one of the battery terminals and with an electrical terminal on the motor/gearbox. The tension exerted by the spring urges the motor/gearbox against a surface of the housing, and also pushes the battery against the wall of the battery enclosure to establish secure electrical continuity therebetween. A switch arrangement includes a rotatable contact ring, immobilized by slots that engage studs projecting from an external ring that rotates about the ring retainer to urge the contact ring into rotation therewith, the contact ring coming in and out of electrical contact with a second electrical contact terminal. The battery enclosure is connected to the other end of the external ring and has a removable cap to allow installation and removal of the battery. Thus a battery can be removed and a replacement battery installed without disturbing the contact ring.
REFERENCES:
patent: 4557598 (1985-12-01), Ono et al.
patent: 5122900 (1992-06-01), Tamburrino et al.
Knieriem Alan S.
Tamburrino Richard A.
Larson James A.
Look Edward K.
Welch Allyn Inc.
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