Air port and smelt spout cleaner and drop jaw tip

Details Air port and smelt spout cleaner and drop jaw tip Air port and smelt spout cleaner and drop jaw tip

2011-07-12

2011-07-12

McAllister, Steven B (Department: 3749)

Liquid heaters and vaporizers

Cleaning

C110S182500

Reexamination Certificate

active

07975658

ABSTRACT:
An air port or smelt spout cleaning tip presents a wider cleaning area configuration on an insertion phase, and on retraction, the tip collapses to provide a smaller size to prevent against hanging up on adjacent structures.

REFERENCES:
patent: 547451 (1895-10-01), Radspinner
patent: 1033653 (1912-07-01), Ashton
patent: 1191236 (1916-07-01), Rigo
patent: 1262755 (1918-04-01), Cutter
patent: 4333200 (1982-06-01), Thurow
patent: 4538552 (1985-09-01), Smuda
patent: 4653409 (1987-03-01), Eriksson
patent: 5167192 (1992-12-01), Pingel et al.
patent: 5351631 (1994-10-01), Hill et al.

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