Advancing material of indeterminate length – Passive guide
Patent
1989-12-20
1991-12-24
Stodola, Daniel P.
Advancing material of indeterminate length
Passive guide
242199, 242 76, B65H 2304, B65H 2700
Patent
active
050744518
ABSTRACT:
A tape guide having improved durability and excellent tape tracking characteristics. In one aspect, the present invention concerns a tape guide that comprises a durable, polymeric, resiliently expandable, substantially cylindrical sleeve. An outer tape guiding surface on said sleeve is concave for biasing a magnetic recording tape toward a centered position on the outer tape guiding surface. An inner surface on the sleeve defines a central bore that is smaller in size than the tape guide post. The central bore, though, is of a sufficient size such that the tape guide can be resiliently expanded to fit over a tape guide post with a resilient, gripping effect. A thickened wall portion is circumferentially positioned on the inner surface in a centered position between the top end and the bottom end of the sleeve. In a preferred embodiment, the sleeve has two opposing slot edges that define a slot along the axial direction of the sleeve. The slot edges are biased towards each other. The preferred tape guide also comprises a center gate that is located on the sleeve in a centered position between the top end and the bottom end of the sleeve.
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Behr David C.
Nelson Bruce L.
Tollefson Dale T.
Bowen P.
Griswold Gary L.
Kagan David B.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
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