Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1974-12-16
1976-02-03
Corcoran, Robert J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
G01R 3312
Patent
active
039367339
ABSTRACT:
An arrangement for supporting a tubular inspection unit adjacent a well bore to enable tubular members to be moved through the inspection unit as they are run in or pulled from the well bore to determine characteristics of the tubular members. The arrangement includes an upwardly extending support for positioning adjacent the well bore and a laterally extending arm pivotally secured to the support and being normally positioned, during operation, at a given angular disposition with respect thereto. The pivotal connection allows, at all times, free angular movement of the arm with respect to the support and about a single axis in either angular direction away from the normal position. The arm comprises two members in telescoping relationship and arranged to accommodate, at all times, free axial sliding of one member with respect to the other in directions of both extension and retraction. Thus, the telescoping members of the arm and the pivot allow free movement of the inspection device within a horizontal plane of limited bounds to thereby accommodate lateral shifting of the tubular members as they are run into or pulled from the well bore without affecting operation of the inspection unit.
REFERENCES:
patent: 3023312 (1962-02-01), Wood
patent: 3361961 (1968-01-01), Zoellick
patent: 3504534 (1970-04-01), Mandula, Jr.
patent: 3718855 (1973-02-01), Rogel et al.
patent: 3736501 (1973-05-01), Donkin
patent: 3781663 (1973-12-01), Abarotin et al.
Corcoran Robert J.
Hayden Jack W.
Trip Inspectors, Inc.
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