The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 10, 1986
Filed:
Mar. 08, 1984
David L O'Dell, Mishawaka, IN (US);
Philip H Diehn, Mishawaka, IN (US);
Wheelabrator-Frye Inc., Mishawaka, IN (US);
Abstract
Apparatus and process for the recovery of particulate material lost during the passage of a surface treatment blast head having a magnetic particle seal over the surface under treatment. Wipers adapted to substantially contain the leakage material are spaced in close proximity around the outside perimeter of the magnetic seal. One or more slotted vacuum tubes are positioned between the magnetic seals and the wipers; each vacuum tube being interconnected by hoses or pipes to a recovery chamber which, in turn, is operatively interconnected with the blast head through a material transfer valve. The recovery chamber is further provided with a vacuum flapper valve adapted to selectively inhibit the flow of vacuum air through the chamber and slotted vacuum tube. During a first step the vacuum valve is open and the material transfer valve is closed. In this configuration, vacuum air and leakage material is drawn into the recovery chamber through the slotted vacuum tube and the recovered leakage material is retained therein for subsequent recycling. During a second step the vacuum valve is closed and the material transfer valve is open thereby facilitating the transfer of recovered leakage material to the blast head for reuse.