Multiple test tube evaporator

• US 4,003,713 A
• Filed: 08/14/1975
• Issued: 01/18/1977
• Est. Priority Date: 08/14/1975
• Status: Expired due to Term

• Current Assignee: Everett N. Bowser
• Original Assignee: Everett N. Bowser
• Inventors: Bowser, Everett N.
• Primary Examiner(s): Yudkoff, Norman
• Assistant Examiner(s): Mullen, Martin G.
• Application Number:
  US05/604,557
• Time in Patent Office: 523 Days
• Field of Search: 159/22, 159/DIG. 11, 159/DIG. 16, 312/209, 312/1, 312/31.1, 34/92, 23/259, 23/292, 211/71, 211/74
• US Class Current: 422/528
• CPC Class Codes: B01D 1/00 Evaporating evaporation in general, e.g. of liquids for gas phase reactions B01B1/005 ; removal of incrustation B08B; preparation of starch C08B30/00; sugar industry C13; prevention of incrustation C23F; drying solid materials or objects by evaporating liquids therefrom F26
• CPC Class Codes: G01N 1/40 Concentrating samples
• CPC Class Codes: G01N 2001/4027 evaporation leaving a concentrated sample
• CPC Class Codes: Y10S 159/16 Vacuum

Abstract

An apparatus for effecting evaporation of the contents of a multitude of containers, such as test tubes, including a rack and a manifold having multiple paths of open communication with a plurality of containers positioned within the rack, through which evaporation of the contents of the containers by vacuum or positive gas flow is achieved.

Claims

1. A multiple test tube evaporator comprising

a. a rack having a substantially rectangularly shaped bottom wall and upstanding end walls,

b. supports extending between said end walls below a midline therethrough so as to permit the upper portions of said end walls to be yieldably separable,

c. means provided by said bottom wall for receiving the closed end of a test tube,

d. means provided by said supports, in vertical alignment with said receiving means provided by said bottom wall, retaining said test tubes in a perpendicular position relative to said receiving means,

e. a vacuum manifold removably carried between said separable end wall portions in spaced parallel relation above said supports and said bottom wall,

f. recessed conically shaped seats formed in the underside of said manifold for receiving the open end of the test tube retained by said supports so as to close the same, and

g. an evaporating needle depending from the underside of and having communication with said manifold concentrically of said recessed conically shaped seats for projection into a test tube held by said rack.

2. A multiple test tube evaporator defined by claim 1, wherein said supports comprise a pair of shelflike members and in which said means provided thereby for retaining said test tubes consist of circular openings formed in vertical alignment with respect to each other and said receiving means provided by said bottom wall.

3. A multiple test tube evaporator as defined by claim 1, wherein said means provided by said bottom wall for receiving the closed end of a test tube comprises a concave recess formed in the upper surface of said bottom wall, the bottom of which is open so as to permit drainage therethrough.

4. A multiple test tube evaporator as defined by claim 3, wherein said supports comprise a pair of shelflike members and in which said means provided thereby for retaining said test tubes consist of circular openings formed in vertical alignment with respect to each other and said concave recesses provided by said bottom wall.

5. A multiple test tube evaporator as defined by claim 1 further defined by providing means on the top edges of said end walls adapted to cooperate with means on the bottom coplanar edges of said end walls of a second rack for releasably holding the racks in a vertical stacked condition.