Method and apparatus for modifying pressure within a fluid dispenser
First Claim
1. A fluid dispenser comprising in combination:
- a barrel having a cap, the cap having a surface with at least one hole; and
a valve having a biasing member and a hole sealer, the biasing member having at least two positions, wherein in a first position of the biasing member, the hole sealer seals the hole and wherein in a second position, the hole sealer does not seal the hole, and wherein a force places the biasing member in at least one of the two positions.
1 Assignment
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Accused Products
Abstract
A method and apparatus for an automated biological reaction system is provided. In the processing of a biological reaction system, there is a need for consistently placing an amount of fluid on a slide. In order to accomplish this, several methods are used including a consistency pulse and a volume adjust means. Moreover, in order to reliably operate an automated biological reaction system, the dispenser must be reliable, easy to assemble and accurate. Among other things, in order to accomplish this, the dispense chamber is substantially in line with the reservoir chamber, the reservoir chamber piston is removed, and the flow of fluid through the dispenser is simplified. Further, in order to operate the automated biological reaction system more reliably, the system is designed in modular pieces with higher functions performed by a host device and the execution of the staining operations performed by remote devices. Also, to reliably catalog data which is used by the automated biological reaction system, data is loaded to a memory device, which in turn is used by the operator to update the operator'"'"'s databases. The generation of the sequence of steps for the automated biological reaction device based on data loaded by the operator, including checks to determine the ability to complete the run, is provided.
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Citations
25 Claims
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1. A fluid dispenser comprising in combination:
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a barrel having a cap, the cap having a surface with at least one hole; and
a valve having a biasing member and a hole sealer, the biasing member having at least two positions, wherein in a first position of the biasing member, the hole sealer seals the hole and wherein in a second position, the hole sealer does not seal the hole, and wherein a force places the biasing member in at least one of the two positions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 20, 21, 22, 23, 24, 25)
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12. A method of equilibrating pressure within a fluid dispenser comprising the steps of:
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providing a fluid dispenser with a barrel having a cap, the cap having a surface with at least one hole, and a valve having a biasing member and a hole sealer, the biasing member having at least two positions; and
placing the biasing member in one of the two positions by applying a force to the valve, wherein in a first position of the biasing member, the hole sealer seals the hole and wherein in a second position, the hole sealer does not seal the hole.
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19. A method of mechanically operating a valve for a fluid dispenser, the valve having a head and a bulge, the method comprising the steps of:
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abutting the bulge against a hole in the fluid dispenser to create a seal;
applying a mechanical force to move the head so that the bulge does not abut the hole; and
reducing the mechanical force so that the bulge abuts the hole.
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Specification