Home

Primary Examiner: Hornsby, Harvey C.
Assistant Examiner: Pous, Robert
Attorney: Striker; Michael J.

Next ten patents ordered by date:

Multi-position paint roller frame
Door arrestors
Internal hinge
Sash balances and components thereof
Clamp for hydraulic hoses
Thermal regeneration and decontamination apparatus and industrial oven
Method of unwinding
Arrangement for perforating a stripe
Apparatus for the automatic insertion of diapositives into the frames to be used in stereopticon lanterns
Method of suspending electrical components

Translate:
En
De
Es
Fr
It
Pt
Ja
Ko
Zh

Title: Apparatus for purifying particulate mould material

Abstract: Apparatus for purifying foundry sand which involves the passage of sand through layers of steel wool supported on perforated discs mounted on a vertical shaft in a standpipe. Perforations in the sides of the standpipe permit air to be blown through the sand as it drops down through the steel wool. The vertical shaft supporting the discs and steel wool is vibrated to cause the sand to move through and past the packs of steel wool.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Jacob, Hermann (2105 Seevetal 3, DT)

Application Number: 545014
Filing Date: 1975-01-29
Publication_date: 1978-05-16
Assignee:
Primary Class(es): 15/93.1 34/432, 164/5
Other Classes:
US Patent Ref:

84842	Dec, 1868	Reynolds	34/20.
89485	Apr, 1869	Johnson	34/20.
271604	Feb, 1883	Cook	34/20.
624515	May, 1899	Mallinson	34/20.
1034861	Aug, 1912	Bear	34/20.
1145772	Jul, 1915	Josey et al.	34/20.
1787878	Jan, 1931	Warden-Stevens	34/20.
2138240	Nov, 1938	Kobusch	34/7.
2233728	Mar, 1941	Bell	164/5.
2420376	May, 1947	Johansson	34/164.
2602242	Jul, 1952	Dok	34/20.
2635949	Apr, 1953	Fenske	34/164.
2683938	Jul, 1954	Gustavsson	34/20.
2963758	Dec, 1960	Pestel	164/5.
3015188	Jan, 1962	Reinecker	259/82.
3161485	Dec, 1964	Buhrer	164/5.
3231512	Jan, 1966	Harter	34/34.

Other Refs: 1,195,226

Jun, 1970	UK

Other References: Shell Mold Job Shop by Robert H. Herrman, "Foundry" Magazine, pp. 78-83, Feb. 1956.