Metal working – Means to assemble or disassemble – With means to test work or product
Patent
1978-08-16
1980-12-16
Hall, Carl E.
Metal working
Means to assemble or disassemble
With means to test work or product
29593, 29606, 29609, 29738, H01F 4102
Patent
active
042388791
ABSTRACT:
A method for manually assembling an inductor and calibrating it, and apparatus to facilitate practice of the method. Laminations are manually inserted into the ends of a hollow core of a wire-wound bobbin to build up a right hand stack of laminations and a left hand stack of laminations. Manual insertion of the laminations is facilitated by use of a stacking block which includes upright indexing posts to promote registration of the laminations. The left and right laminations are so stacked that an oversize air gap is included between the right hand stack and the left hand stack. After all the laminations have been stacked, the inductor is placed on a calibrator bed to facilitate calibration. The calibrator bed includes first and second sets of jaws which are closed along orthogonal directions under control of an operator. Closure of the first set of jaws brings the laminations into registration. The inductor is then connected electrically to an impedance comparator meter which has a display for indicating the difference in inductance between the inductor being calibrated and a standard inductor. Next, the second set of jaws is closed, forcing the right hand and left hand stacks of inductors together, narrowing the air gap. The operator watches the impedance comparator meter while moving the second set of jaws and continues to narrow the air gap until the meter indicates the inductances to be matched exactly. Thereafter, the inductor is removed from the calibrator bed and the laminations are bonded together.
REFERENCES:
patent: 2055175 (1936-09-01), Franz
patent: 2658268 (1953-11-01), Knauf, Jr. et al.
Howe Charles W.
Podry John M.
Zurlinden, III Cyril P.
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