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Publication numberUS3762879 A
Publication typeGrant
Publication dateOct 2, 1973
Filing dateJun 21, 1971
Priority dateJun 14, 1968
Publication numberUS 3762879 A, US 3762879A, US-A-3762879, US3762879 A, US3762879A
InventorsMoran J
Original AssigneeHycel Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Loop conveyor for automatic chemical testing apparatus
US 3762879 A
Abstract  available in
Images(33)
Previous page
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Claims  available in
Description  (OCR text may contain errors)

United States Patent 1 1 Moran 1 Oct. 2, 1973 1 LOOP CONVEYOR FOR AUTOMATIC CHEMICAL TESTING APPARATUS [75] Inventor: John J. Moran, Houston, Tex.

[73] Assignee: Hycel, Inc., Houston, Tex.

[22] Filed: June 21,197]

[21] Appl. No.: 155,153

Related US. Application Data [62] Division of Scr. No. 737,065, June 14, 1968, Pat. No.

[52] U.S. Cl. 23/259, 23/253 R [51] Int. Cl. G0ln 1/14, G01nl/18 [58] Field of Search 23/253, 259, 292;

[56] References Cited UNITED STATES PATENTS 3,432,271 3/1969 Wasilewski 23/253 R 3,475,130 10/1969 Baruch 23/259 X 3,481,709 12/1969 Slone r 23/259 X 3,487,862 l/l970 Soderblom 23/259 X 3,533,744 10/1970 Ungcr 23/259 X 3,556,731 l/l97l Martin 23/259 X 3,578,412 5/1971 Martin 23/259 Primary Examiner-Morris O. Wolk Assistant ExaminerR. E. Serwin Attorney-James F. Weiler et al.

[57] ABSTRACT A loop conveyor for automatic chemical testing apparatus having a plurality of rigid slats for carrying a row of reaction tubes intermediate their ends with the open ends extending upwardly above the conveyor and the lower closed ends extending beneath the upper portion of the loop whereby chemical tests may be performed in the tube as the conveyor is indexed along the various positions. Heating means positioned inside the conveyor and movable upward for heating the bottom of some of the tubes and movable downwardly for allowing the conveyor to rotate. Power means for rotating the conveyor and lowering and raising the heating means and moving drying means into and out of the tubes and having a lost motion connection between the power means and the conveyor for allowing the heating means to be lowered and the drying means to be retracted away from the tubes before the conveyor is rotated. A second lost motion connection for allowing the conveyor to be rotated before the heating means is raised and the drying means is moved into the tubes. An indexing pawl engaging the conveyor for allowing the conveyor to index only a predetermined distance, and a locking means for holding the conveyor in a fixed position after each indexing movement.

18 Claims, 68 Drawing Figures lil PAIENTEB 081 21975 (fa/$0 cf Mora/7 I N VENTOR.

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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4067694 *Dec 17, 1976Jan 10, 1978Eastman Kodak CompanyLoading and unloading mechanism for continuously rotating container
US4090848 *Mar 15, 1976May 23, 1978Nihon Denshi Kabushiki KaishaMedical diagnosis
US4155978 *Apr 21, 1978May 22, 1979Nihon Denshi Kabushiki KaishaAutomatic chemical analyzer
US4200607 *Oct 10, 1978Apr 29, 1980Olympus Opitcal Co., Ltd.Automatic chemical analyzer
US4224032 *Dec 5, 1977Sep 23, 1980Eastman Kodak CompanyMethod and apparatus for chemical analysis
US4259288 *Feb 12, 1979Mar 31, 1981Welch Henry HAutomatic multichannel apparatus for performing analyses on fluids, in particular for performing clinical-chemistry analyses on biological liquids
US4265855 *Nov 3, 1978May 5, 1981Electro-Nucleonics, Inc.System for performing immunochemical and other analyses involving phase separation
US4313735 *Aug 22, 1980Feb 2, 1982Hitachi, Ltd.Automatic chemical analyzing method and apparatus
US4387076 *Oct 14, 1981Jun 7, 1983Coulter Electronics, Inc.Sample feeding arrangement
US4664885 *Dec 20, 1984May 12, 1987Tokyo Shibaura Denki Kabushiki KaishaAutomatic chemical analyzer
US5350564 *Jun 28, 1993Sep 27, 1994Baxter Diagnostics Inc.Automated chemical analyzer with apparatus and method for conveying and temporary storage of sample tubes
US7115386 *Jul 16, 2003Oct 3, 2006Leica Mikrosysteme GmbhSupports automatically assigned to a treatment position; multi small metal screens on a single support plate
Classifications
U.S. Classification422/65, 422/67
International ClassificationG01N35/02
Cooperative ClassificationG01N35/021
European ClassificationG01N35/02B