Method of making a ferrule having enhanced concentricity

Details Method of making a ferrule having enhanced concentricity Method of making a ferrule having enhanced concentricity

1990-02-12

1991-02-19

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

29464, 350 9620, B29C 6578, G02B 636

Patent

active

049941348

ABSTRACT:
A method of making a two-layered (ceramic-glass) ferrule having a high degree of concentricity employing the steps of: (a) providing a tubular fixture; (b) inserting a ferrule fixture into a portion of the tubular fixture, the ferrule fixture having continuous and non-continuous channels, the concentricity of the continuous channel varying no more than two microns; (c) inserting a ceramic ferrule tubular member into the tubular fixture; (d) inserting a glass ferrule tubular member into the ceramic ferrule tubular member and into the non-continuous channel of the ferrule fixture; (e) inserting an alignment member, having a length greater than the glass ferrule tubular member and a diameter that matches the internal diameter of the glass ferrule tubular member and the continuous channel of said ferrule fixture within one micron, into the continuous channel of the ferrule fixture and into the glass ferrule tubular member; (f) bonding the ceramic ferrule tubular member to the glass ferrule tubular member to form a composite; and, (g) removing the alignment member and glass-ceramic composite from the tubular fixture.

REFERENCES:
patent: 3092058 (1963-06-01), Feeler
patent: 3404055 (1968-10-01), Wieland et al.
patent: 3861781 (1975-01-01), Hasegawa et al.
patent: 4303304 (1981-12-01), Ruiz
patent: 4396247 (1983-08-01), Simon et al.
patent: 4636033 (1987-01-01), Gagen
patent: 4842363 (1989-06-01), Margolin et al.
patent: 4867525 (1989-09-01), DiMarco et al.
patent: 4934785 (1990-06-01), Mathis et al.

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