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:
May. 30, 1978
Filed:
Jul. 18, 1977
Richard C Lamb, Plantsville, CT (US);
Koehler-Dayton, Inc., New Britain, CT (US);
Abstract
A pump-filter assembly for a recirculating toilet comprising, an axial flow pump including a support tube and a drive shaft supported therein, means for rotating the drive shaft in first and second opposite directions, a first impeller secured to the drive shaft, the impeller being selectively configured to pump when the drive shaft is rotated in the first direction and to forcefully draw in air when the drive shaft is rotated in the second direction, the drive shaft extending below the support tube, a second impeller supported on the drive shaft at a location below the support tube for free-wheeling rotation thereon, a ratchet mechanism secured to the portion of the drive shaft extending below the support tube, and a pawl mechanism secured to the second impeller means for selective driving engagement with the ratchet mechanism when the drive shaft is driven in the opposite second direction, and filter means surrounding the axial flow pump.