# US 4,251,159 A · Disposable multi-chamber cuvette > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,251,159 A - Document ID: US4251159A - Status: Granted - Kind: A - Application number: 06/003,503 - Filed: 1979-01-15 - Granted: 1981-02-17 - Earliest claimed: 1979-01-15 - Assignees: American Hospital Supply Corporation - Inventors: Fred K. White - Web page: https://patentgrep.com/patent/US4251159A ## CPC - G01N 21/03: Cuvette constructions - G01N 2021/0357: {Sets of cuvettes} - G01N 2021/0382: {Frustoconical, tapered cell} - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) ## Abstract A disposable multi-chamber cuvette for use with photometric chemical analyzers. Each chamber is defined by an individual cup formed of optically-clear plastic material having its own side, end, and bottom walls. Each pair of adjacent cups are joined by a thin vertical web that is spaced inwardly from the side walls of adjacent cups so that light piping between cups is minimized. The thin webs preferably extend along the longitudinal vertical midplane of the series. A unitary cover seals the open tops of the cups and coacts to rigidify the entire assembly. A suitable handle projects from one end of the series to provide means for inserting and removing the rigid cuvette cartridge into and from a chemical analyzer. ## Claims ### Claim 1 A cuvette for use in photometric chemical analyzers, comprising a plurality of optically-clear open-topped cups each having side, bottom, and end walls; said cups being arranged in a longitudinal series with the end walls of adjacent cups being disposed in spaced-apart relation; said end walls of each pair of adjacent cups being joined by a thin vertical web formed integrally with said cups; each web being spaced inwardly from said side walls of said adjacent cups and extending at substantially right angles to said end walls of said adjacent cups. ### Claim 2 (depends on 1) The cuvette of claim 1 in which said webs extend along the longitudinal vertical midplane of said series of cups. ### Claim 3 (depends on 2) The cuvette of claim 2 in which each of said webs has vertical dimensions substantially less than those of said cups. ### Claim 4 (depends on 3) The cuvette of claim 3 in which each of said webs has a lower edge terminating a substantial distance above the bottom walls of said cups. ### Claim 5 (depends on 1) The cuvette of claim 1 in which said side and end walls of said cups are planar. ### Claim 6 (depends on 5) The cuvette of claim 5 in which the width of the side walls of each cup tapers downwardly. ### Claim 7 (depends on 1) The cuvette of claim 1 in which all of said open-topped cups are sealed at the upper ends thereof by a unitary cover. ### Claim 8 (depends on 7) The cuvette of claim 7 in which chemical reagents are sealed within at least certain of said cups. ### Claim 9 (depends on 1) The cuvette of claim 1 in which an integral supporting handle projects from one end of said series of cups. ### Claim 10 A cuvette for use in photometric chemical analyzers, comprising a plurality of optically-clear open-topped cups each having side, bottom, and end walls; said cups being arranged in a longitudinal series with the end walls of adjacent cups being disposed in spaced-apart relation; said ends walls of each pair of adjacent cups being joined by a thin vertical web formed integrally with said cups and extending at substantially right angles to said end walls; each of said webs extending along the longitudinal vertical midplane of said series of cups and having a thickness no greater than about 25 percent of the thickness of each of said end walls. ### Claim 11 (depends on 10) The cuvette of claim 10 in which each of said webs has a thickness within the range of 10 to 20 percent of the thickness of each of said end walls. ### Claim 12 A cuvette for use in photometric chemical analyzers, comprising a body section and a cover section; said body section including a plurality of optically-clear open-topped cups each having side, bottom, and end walls; said cups being arranged in a longitudinal series with the end walls of adjacent cups being disposed in spaced-apart relation; said side and end walls of said cups being planar and said end walls of each pair of adjacent cups being joined by a thin vertical web formed integrally with said cups; each web being spaced inwardly from said side walls of said adjacent cups and extending at substantially right angles to said end walls of said adjacent cups; said cover section extending horizontally and being secured to said cups to seal the open upper ends thereof. ### Claim 13 (depends on 12) The cuvette of claim 12 in which said webs extend along the longitudinal vertical midplane of said series or cups. ### Claim 14 (depends on 13) The cuvette of claim 13 in which each of said webs has a thickness within the range of 10 to 20 percent of the thickness of each of said end walls. ### Claim 15 (depends on 12) The cuvette of claim 12 in which each of said webs has vertical dimensions substantially less than those of said cups. ### Claim 16 (depends on 15) The cuvette of claim 15 in which each of said webs has a lower edge terminating a substantial distance above the bottom walls of said cups. ### Claim 17 (depends on 16) The cuvette of claim 16 in which the width of the side walls of each cup tapers downwardly. ### Claim 18 (depends on 17) The cuvette of claim 17 in which chemical reagents are sealed within at least certain of said cups. ### Claim 19 (depends on 12) The cuvette of claim 12 in which an integral supporting handle projects from one end of said series of cups. ### Claim 20 A cuvette for use in photometric chemical analyzers, comprising a body section and a cover section; said body section including a plurality of optically-clear open-topped cups each having side, bottom, and end walls; said cups being arranged in a longitudinal series with the end walls of adjacent cups being disposed in spaced-apart relation; said side and end walls of said cups being planar and said end walls of each pair of adjacent cups being joined by a thin vertical web formed integrally with said cups and extending at substantially right angles to said end walls; said cover section extending horizontally and being secured to said cups to seal the open upper ends thereof; each of said webs extending along the longitudinal vertical midplane of said series of cups and having a thickness no greater than about 25 percent of the thickness of each of said end walls.