US 4,095,307 AGranted

Scraper for a vessel interior surface

AssigneeLox Equipment Company

InventorDale A. Brubaker

Life of this patent

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Abstract

A scraper for the interior surface of a vessel having an inner shaft positioned within the vessel. A plurality of arms are disposed radially with respect to the inner shaft in parallel pairs. At least two arms of one pair of arms oppositely radially disposed on the inner shaft are substantially parallel with respect to another two arms similarly disposed. Peripheral shafts span the end portions of the parallel arms. Further parallel arms and corresponding peripheral shafts may locate ninety degrees about the inner shaft with respect to adjacent pairs of arms. Scraping means for scraping the interior surface of the vessel mount to the plurality of peripheral shafts. The scraping means includes a lever having two pivotal arms, one pivotal arm encompassing a blade and the other pivotal arm having a spring means for urging contact between the blade and the inner surface of the vessel. The inner shaft may be constructed with sufficient flexibility to generally coincide with the deflected axis of imperfect vessels.

Claims13

Dependent claims

Scraper for the interior surface of a vessel comprising:

a. an inner shaft positioned within the vessel,
b. a plurality of arms radially disposed with respect to said inner shaft said plurality of arms having at least a first pair of substantially parallel arms and a second pair of substantially parallel arms, one of said arms of said first pair of arms oppositely radially disposed along said inner shaft with respect to one arm of said second pair of arms and another of said arms of said first pair of arms oppositely radially disposed along said shaft with respect to another arm of said second pair of arms,
c. a plurality of peripheral shafts spanning the end portions of at least said first and second pairs of substantially parallel arms,
d. scraping means for scraping the interior surface of the vessel mounted on said plurality of peripheral shafts, said scraping means comprising a plurality of scraping units, each of said units including a lever having a first pivotal arm and a second pivotal arm pivotal about a fulcrum and having a blade contacting the inner surface of the vessel, said blade mounted on said first pivotal arm of said lever, said second pivotal arm of said lever connected to spring means for urging contact between said blade and the inner surface of the vessel through a predetermined range of distances between the fulcrum of said lever and the inner surface of the vessel.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 05/700,730Filed 28 Jun 1976
Granted: 20 Jun 1978
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

F28G 3/12
Having scrapers, hammers, or cutters, e.g. rigidly mounted: resiliently mounted
B01D 9/005
Crystallisation: selection of auxiliary, e.g. for control of crystallisation nuclei, of crystal growth, of adherence to walls; Arrangements for…
B08B 9/0808
Cleaning containers having tubular shape, e.g. casks, barrels, drums: by methods involving the use of tools, e.g. by brushes, scrapers
B08B 9/087
Cleaning containers, e.g. tanks: by methods involving the use of tools, e.g. brushes, scrapers