A closure for attachment to a centrifuge bottle. The closure comprises an end wall and a sidewall extending from the end wall. The sidewall comprises a first terminal end, a second terminal end, a first transition surface, and a second transition surface. The first terminal end has a first outer per
A closure for attachment to a centrifuge bottle. The closure comprises an end wall and a sidewall extending from the end wall. The sidewall comprises a first terminal end, a second terminal end, a first transition surface, and a second transition surface. The first terminal end has a first outer peripheral boundary at a first radial distance from an axial centerline. The second terminal end has a second outer peripheral boundary at a second radial distance from the axial centerline. The second radial distance is less than the first radial distance. The first transition surface extends between the first outer peripheral boundary and the second transition surface. The second transition surface extends between the first transition surface and the second outer peripheral boundary.
대표청구항▼
1. A closure for attachment to a centrifuge bottle having a mouth, the closure having a thread for threaded engagement with the centrifuge bottle and comprising: an end wall; anda sidewall having an axial centerline and extending from said end wall, said sidewall comprising: a first terminal end opp
1. A closure for attachment to a centrifuge bottle having a mouth, the closure having a thread for threaded engagement with the centrifuge bottle and comprising: an end wall; anda sidewall having an axial centerline and extending from said end wall, said sidewall comprising: a first terminal end opposite said end wall, said first terminal end having a first outer peripheral boundary at a first radial distance from said axial centerline;said first terminal end defining an opening for coupling the closure to the bottle;a second terminal end adjacent said end wall, said second terminal end having a second outer peripheral boundary at a second radial distance from said axial centerline, said second radial distance being less than said first radial distance;a first transition surface inclined at an angle relative to said axial centerline with said thread being positioned radially inwardly from said first transition surface; anda second transition surface inclined at an angle relative to said axial centerline, said second transition surface being configured to intersect a plane defined by the mouth of said centrifuge bottle when the closure is attached to the mouth;said first transition surface extending between said first outer peripheral boundary and said second transition surface;said second transition surface extending between said first transition surface and said second outer peripheral boundary. 2. The closure of claim 1, wherein said first transition surface and said second transition surface each have a linear cross section when taken along a plane through said axial centerline. 3. The closure of claim 2, wherein said first transition surface is oriented at a first angle, measured from a line parallel to said axial centerline, of between about 9° and about 15°, and said second transition surface is oriented at a second angle, measured from a plane perpendicular to said axial centerline, of between about 55° and about 65°. 4. The closure of claim 3, wherein said first angle is about 12° and said second angle is about 60°. 5. The closure of claim 1, wherein said first outer peripheral boundary is defined by a first diameter, said second outer peripheral boundary is defined by a second diameter smaller than said first diameter, and said first and second transition surfaces extend circumferentially around said sidewall. 6. The closure of claim 1, wherein said sidewall further comprises a plurality of threads adapted for threaded engagement with the centrifuge bottle. 7. The closure of claim 1, wherein said end wall and said sidewall are made from a material selected from a group consisting of an unfilled or filled blend of polyphenylene ether and high impact polystyrene, unfilled or glass-filled polypropylene, polyphenylene sulfide, polyphenylenesulfone, polyether sulfone, polysulfone, polyetheretherketone, unfilled or filled polyphenylene oxide, unfilled or glass-filled polyetherimide, unfilled or filled acetal copolymer or homopolymer, cellulose acetate, cellulose acetate butyrate, unfilled or filled thermoplastic polyurethane, unfilled or filled polyamides, and unfilled or filled ABS. 8. A closure for attachment to a centrifuge bottle having a mouth, the closure having a thread for threaded engagement with the centrifuge bottle and comprising: an end wall having an aperture formed therein; anda sidewall having an axial centerline and extending from said end wall, said sidewall comprising: a first terminal end opposite said end wall, said first terminal end having a first outer peripheral boundary at a first radial distance from said axial centerline;said first terminal end defining an opening for coupling the closure to the bottle;a second terminal end adjacent said end wall, said second terminal end having a second outer peripheral boundary at a second radial distance from said axial centerline, said second radial distance being less than said first radial distance;a first transition surface inclined at an angle relative to said axial centerline with said thread being positioned radially inwardly from said first transition surface; anda second transition surface inclined at an angle relative to said axial centerline, said second transition surface being configured to intersect a plane defined by the mouth of said centrifuge bottle when the closure is attached to the mouth;said first transition surface extending between said first outer peripheral boundary and said second transition surface;said second transition surface extending between said first transition surface and said second outer peripheral boundary. 9. The closure of claim 8, further comprising: a plug removably received in said aperture, said plug having grip ridges in a cross-shaped pattern to ease insertion and removal of said plug within said aperture. 10. An assembly comprising: a centrifuge bottle having a mouth and an internal volume of at least 1000 ml; anda closure having a thread for threaded engagement with said centrifuge bottle and being removably secured to said centrifuge bottle, said closure comprising: an end wall; anda sidewall having an axial centerline and extending from said end wall, said sidewall comprising: a first terminal end opposite said end wall, said first terminal end having a first outer peripheral boundary at a first radial distance from said axial centerline;said first terminal end defining an opening for coupling the closure to the bottle;a second terminal end adjacent said end wall, said second terminal end having a second outer peripheral boundary at a second radial distance from said axial centerline, said second radial distance being less than said first radial distance;a first transition surface inclined at an angle relative to said axial centerline with said thread being positioned radially inwardly from said first transition surface; anda second transition surface inclined at an angle relative to said axial centerline, said second transition surface being configured to intersect a plane defined by the mouth of said centrifuge bottle when the closure is attached to said mouth;said first transition surface extending between said first outer peripheral boundary and said second transition surface;said second transition surface extending between said first transition surface and said second outer peripheral boundary, whereby the assembly is adapted for placement with other assemblies into a centrifuge rotor such that the assemblies seat within the centrifuge rotor without interference contact between adjacent assemblies. 11. The assembly of claim 10, wherein said first transition surface and said second transition surface each have a linear cross section when taken along a plane through said axial centerline. 12. The assembly of claim 11, wherein said first transition surface is oriented at a first angle, measured from a line parallel to said axial centerline, of between about 9° and about 15°, and said second transition surface is oriented at a second angle, measured from a plane perpendicular to said axial centerline, of between about 55° and about 65°. 13. The assembly of claim 12, wherein said first angle is about 12° and said second angle is about 60°. 14. The assembly of claim 10, wherein said first outer peripheral boundary is defined by a first diameter, said second outer peripheral boundary is defined by a second diameter smaller than said first diameter, and said first and second transition surfaces extend circumferentially around said sidewall. 15. The assembly of claim 10, wherein said end wall has an aperture formed therein. 16. The assembly of claim 15, further comprising: a plug removably received in said aperture, said plug having grip ridges in a cross-shaped pattern to ease insertion and removal of said plug within said aperture. 17. The assembly of claim 10, wherein said sidewall further comprises a plurality of threads adapted for threaded engagement with said centrifuge bottle. 18. The assembly of claim 10, wherein said end wall and said sidewall are made from a material selected from a group consisting of an unfilled or filled blend of polyphenylene ether and high impact polystyrene, unfilled or glass-filled polypropylene, polyphenylene sulfide, polyphenylenesulfone, polyether sulfone, polysulfone, polyetheretherketone, polyphenylene oxide, unfilled or glass-filled polyetherimide, unfilled or filled acetal copolymer or homopolymer, cellulose acetate, cellulose acetate butyrate, unfilled or filled thermoplastic polyurethane, unfilled or filled polyamides, and unfilled or filled ABS.
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