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:
Mar. 30, 1976
Filed:
Feb. 25, 1974
Applicant:
Inventors:
Francesco Siclari, Barlassina (Milan), IT;
Franco Magnoni, Milan, IT;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16N / ; F16N / ;
U.S. Cl.
CPC ...
184 / ; 184 / ; 184-622 ; 184 / ; 308107 ; 122 32 ;
Abstract
A method and a device are disclosed for lubricating the internal bearings thin-layer evaporators used in polycondensation or polymerization installations, in which the lubricant used for said internal bearings is the same polymer in an appropriate intermediate degree of polymerization where it exhibits the fluidity required to serve as a lubricant. Means are provided for circulating and recycling the polymer and critical viscosity values are suggested for the polymer when used as a lubricant.