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:
Oct. 03, 2000
Filed:
Jan. 09, 1998
John L Creps, Rudolph, OH (US);
Richard A Hallett, Delta, OH (US);
Henry Filters, Inc., Bowling Green, OH (US);
Abstract
A floor mounted sump pump assembly for pumping particulate laden dirty coolant discharged by a floor mounted machine tool station includes a sump tank having a cylindrical wall spaced around a central axis and an inclined bottom with a central lower region. A pump is positioned within the sump tank offset from the central axis. The pump has an inlet oriented above and adjacent to the central lower region. A conduit has an outlet coupled to the sump tank for discharging dirty coolant from the machine tool station into the sump tank. The discharged dirty coolant swirls down around the inclined bottom to the central lower region for the pump inlet to pump the dirty coolant out of the sump tank. An overflow tank is adjacent to the sump tank to collect overflow coolant from the sump tank. A return pump is operable with the overflow tank to discharge the overflow coolant back into the sump tank. The sump tank is sized sufficiently small to maintain a sufficient coolant swirl velocity to prevent particulate from settling out.