Electric heating – Heating devices – Combined with pressure application means
Patent
1988-11-30
1989-10-17
Echols, P. W.
Electric heating
Heating devices
Combined with pressure application means
219390, 100 94P, 432124, 432162, 29603, H05B 100
Patent
active
048749222
ABSTRACT:
Apparatus for compressing against each other for bonding by use of a granule clamp the I and C bars which comprise the O bars from which head cores may be cut, includes a rotating frame so that the angular orientation of the O bars may be changed after embedding them in the granules. This allows bonding glass rods to be placed in the interior openings of the unbonded O bars and then by rotating the frame, cause the glass rods to fall into a position adjacent to the interior edge of the flux gap, and at the same time keep the plane of the flux gaps normal to the axis of the granule clamp's pressure die. When heat is then applied to the unbonded O bars, gravity draws the bonding glass into a fillet adjacent the interior edge of the flux gap.
REFERENCES:
patent: 3639701 (1972-02-01), Secrist et al.
patent: 3672045 (1972-06-01), Robertson
Cheatham et al, "Magnetic Head Construction," IBM Tech. Disclosure Bull., vol. 19, No. 2, Jul. 1976, p. 397.
Daniels et al, "Diffusion Bonding of Dissimilar Ceramics" IBM Tech. Discl. Bull., vol. 20, N. 10, Mar. 1978, p. 4088.
Kehr et al, "Ferrite-Ferrite Diffusion Bonded Recordig Head" IBM Tech. Discl. Bull., vol. 21, No. 6, Nov. 1978, pp. 2212-2213.
Chow et al, "Diffusion Bonding Fixture" IBM Tech. Disclosure Bull., vol. 24, No. 3, Aug. 81, p. 1496.
Rigby, E. B., "Diffusion Bonding of NiZn Ferrite and Nonmagnetic Materials," IEEE Transactions on Magnetics, vol. Mag-20, No. 5, Sep. 1984, pp. 1503-1505.
Hennenfent Douglas J.
Vadnais Timothy W.
Echols P. W.
Heller III Edward P.
Impris Technology Incorporated
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