Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Separating means
Patent
1995-07-17
1997-09-16
Bollinger, David H.
Classifying, separating, and assorting solids
Sorting special items, and certain methods and apparatus for...
Separating means
209235, 209250, 209261, 209355, 209906, B07C 704
Patent
active
056670800
ABSTRACT:
A hand-held jeweler's vacuum comprises an elongated vacuum member with an opening at one end, motor drive means located at the other end and an aperture in the bottom of the elongated member. A detachable box member is mounted beneath the aperture to receive stones and metal pieces. Internally, a mesh filter and a vacuum filter are positioned in the intake path at approximately a 45 degree angle to the air flow and a pre-determined distance apart. In operation, the vacuum picks up metal and stones which are stopped by the mesh filter and the vacuum filter from proceeding through the vacuum filter and the stones and metals fall into the box. The stones and metals can the be removed while other particles are collected in the storage space beyond the filters. The invention permits the salvage of small stones and precious metals which otherwise would be lost during the manufacturing process.
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patent: 4011624 (1977-03-01), Proett
patent: 4209875 (1980-07-01), Pugh et al.
patent: 5189753 (1993-03-01), Sousa et al.
patent: 5224238 (1993-07-01), Bartlett
patent: 5411150 (1995-05-01), Sigurdsson
Bollinger David H.
Joel, Esq. Richard A.
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