Glass manufacturing – Glassworking or preform by or with reheating means – Envelope tipping off type
Patent
1984-03-26
1985-07-23
Kellogg, Arthur
Glass manufacturing
Glassworking or preform by or with reheating means
Envelope tipping off type
65108, 65110, 65285, C03B 2311
Patent
active
045307121
ABSTRACT:
A pipette puller is provided for drawing glass or quartz tubing into micropipettes. A fixed clamp and movable clamp are utilized and between the clamps a furnace is provided which has an opposing pair of elongated heating elements. The heating elements are supported by binding posts of high thermal conductivity and relatively large mass, which provides relatively low thermal inertia of the heating elements. The heating elements may be moved relative to each other, facilitating a high degree of control of the temperature applied to the glass or quartz tubing for obtaining uniformly repeatable shapes of micropipettes
REFERENCES:
patent: 2265359 (1941-12-01), Neumann
patent: 3424838 (1969-01-01), Buus
patent: 3489544 (1970-01-01), Andrews et al.
patent: 3556758 (1971-01-01), Andrews et al.
patent: 3556760 (1971-01-01), Bender et al.
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patent: 3852054 (1974-12-01), Dichter
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patent: 4111677 (1978-04-01), Andrews
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Physical Techniques in Biological Research, vol. 5, pp. 36-59, by William Nastuck, (1967).
Kopf Model 700D Pipette Puller, (1983).
Johnsonbaugh Bruce H.
Kellogg Arthur
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