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. 01, 1985
Filed:
Jun. 29, 1984
Ulrich Faeser, Kronberg, DE;
Dieter Mahn, Bad Homburg v.d.H., DE;
Fresenius AG, Bad Homberg, DE;
Abstract
A peristaltic pump, more specially for enteral nutrition or feeding has an electric motor and a wheel, on which rollers are supported, with axis crossing the axis of the electric motor so that the main dimension of the wheel in its radial direction and the main dimension of the electric motor in its axial direction are parallel to each other or in line with each other so that a specially flat mechanical design of the pump is produced. The shaft of the electric motor has a pinion for meshing with teeth in a radial plane on the outer edge of the wheel and driving it, this producing a high step-down ratio of 1:500 or even more. The wheel with the rollers may have a generally large diameter so that it may be run at a low speed quietly. With such a diameter of the support wheel and when the pump has a flat rectangular housing, empty corners will be present in the housing on the two sides of the electric motor, into which batteries or the like may be placed. The motor may, because of the great step-down ratio, be run at a high speed so that a mass produced motor may be used for the pump. The peristaltic pump with such a flat rectangular housing may be comfortably kept under the user's clothing without making itself seen.