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. 06, 1987
Filed:
Dec. 09, 1985
Kurt Jauch, 8351 Lalling, DE;
Other;
Abstract
A casing (10) is formed with two cylinder chambers (21, 22) in overlapping arrangement between an inlet (43) and an outlet (44). A rotary piston (27, 28) each is fixed to a respective one of two shafts (17, 18) extending through a cylinder chamber (21, 22) each and being interconnected for rotation in opposite sense. The rotary pistons (27, 28) are complementary and each have an exterior face (29, 30) coaxial with the corresponding shaft (17, 18), the exterior faces periodically forming sealing zones with the casing (10) and with a respective exterior face (38, 37) of respective sleeve (35, 36) each which is coaxial with the shaft (18, 17) of the complementary rotary piston (28, 27). Each sleeve (35, 36) is sealingly arranged and rotatable between a respective one of the rotary pistons (27, 28) and the corresponding shaft (17, 18). The exterior faces (29, 30) of each complementary rotary piston periodically engage the exterior faces (37, 38) of each sleeve to periodically drive in rotation each sleeve (35, 36) at a speed greater than that of the corresponding rotary piston (27, 28) and shaft (17, 18). In this manner flow losses and control problems caused by the same are largely avoided.