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:
Feb. 27, 1979
Filed:
Feb. 15, 1978
Yuji Oshikubo, Sakura, JP;
Nichiryo Co., Ltd., Tokyo, JP;
Abstract
A pipetting device including a cylinder disposed at the lower end portion of a cylindrical housing, a piston working in the cylinder and having a piston rod secured thereto to extend through the housing, an actuating knob secured to the upper end of the piston rod, and a return spring biassing the piston rod upwardly, wherein the device further comprises a sleeve fitted screw-threadingly in the housing and engaging with the piston rod slidably but non rotatably, locking means releasably preventing rotation of the sleeve in the housing, an elongated transparent window having a scale thereon and being formed in the housing, and a datum line formed around the outer periphery of the sleeve.