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:
Jun. 10, 1980
Filed:
Feb. 21, 1978
Nobuyoshi Suzuki, Hachioji, JP;
Olympus Optical Co., Ltd., , JP;
Abstract
A liquid sample distributor comprises a sample transfer tube having a nozzle at one end for suction and discharge of a sample, a first switchable valve located intermediate the length of the sample transfer tube, a first sample suction pump and a second sample discharge pump located on the opposite sides of the first switchable valve and connected with the sample transfer tube, a second switchable valve connected with the other end of the transfer tube, and a rinsing water vessel connected with the transfer tube through the second switchable valve. The displacement of the second pump is equal to the quantity of a liquid sample to be distributed while the displacement of the first pump is greater than the given quantity of the liquid sample. A liquid sample is initially suctioned into the nozzle by the first pump in a quantity which is greater than the given quantity to be distributed, and the given quantity thereof is discharged through the second pump for purposes of distribution. Subsequently, the remaining quantity of the liquid sample is discharged by the first pump so as to be discarded. In this manner, a variation in the quantity and the concentration of the liquid sample being distributed is avoided, assuring a smooth distributing operation.