Pressure and temperature reaction vessel, method, and apparatus
AssigneeParr Instrument Company
InventorsIstvan S. Hukvari, Henry J. Albert, Vernon G. Moon, Michael R. Steffenson
Life of this patent
Estimating the term…
Abstract
A pressure and temperature reaction vessel is constructed from substantially microwave-transmissible materials. The vessel includes pressure-relief vents and a sliding seal which isolates a pressure reaction chamber from the vents. A visual indicator is operatively associated with the sliding seal to indicate pressure within the reaction chamber. At pressures above a preselected limit, the sliding seal becomes unsupported and the reaction chamber is fluidly communicated with the vents.
Claims14
A pressure and temperature reaction vessel comprising:
- a containment housing having a first portion and a second portion respectively engageable so as to define a reaction chamber wherein the first portion has vent means for venting the reaction chamber;
- a three position movable seal, sequentially operable through a first sealing position and a second sealing position to seal the reaction chamber from the vent means when pressure in the reaction chamber is less than a preselected maximum pressure, and through a third non-sealing position to fluidly communicate the reaction chamber with the vent means when pressure in the reaction chamber exceeds the preselected maximum pressure;
- and
- a visual indicator, operatively associated with the movable seal, to indicate the position of the movable seal whereby pressure within the reaction chamber can be visually determined.
A pressure and temperature reaction vessel for chemical and physical reactions, comprising:
- a containment housing constructed from substantially microwave-transmissible materials, having a base and a removable lid together defining a reaction chamber;
- a sealing means mounted to move between different first and second sealing positions for sealing the reaction chamber;
- and
- a substantially microwave-transmissible self-resetting visual indicator means, for indicating various different pressures within the reaction chamber.
A method for heating and reacting reactants in a pressure and temperature reaction vessel, comprising the steps of:
- placing reactants in a substantially microwave-transmissive pressure and temperature reaction vessel, wherein the vessel has a seal mounted to move between at least two distinct sealing positions and an operably connected visual indicator for indicating various different pressures within the reaction chamber and means for venting the reaction chamber if pressure exceeds a preselected limit;
- exposing the vessel to microwaves to heat the reactants and pressurize the reaction chamber;
- and
- monitoring the visual indicator to determine various pressures within the vessel during and after the microwave exposure step.
A pressure and temperature reaction vessel for reactants, comprising:
- a containment housing having a first portion engageable with a second portion so as to define a receptacle, wherein the first portion has vent means for venting the receptacle;
- a liner, removably received in and supported by the receptacle and having a circular side wall, a closed bottom, and an open top, wherein the circular side wall has an inner surface adjacent to the open top defining a sealing surface;
- a three position movable liner lid having a circular seal shoulder and an annular seal received on the seal shoulder, wherein the annular seal is sized to slidably abut the sealing surface through first and second sealing positions to seal the liner from the vent means so as to define a reaction chamber and is movable to a third non-sealing position to fluidly communicate the reaction chamber with the vent means;
- biasing means for biasing the annular seal to the first sealing position and for applying a reaction force to the movable liner lid in response to pressure within the reaction chamber;
- and
- an external visual indicator, operatively associated with the liner lid and the biasing means, to indicate the sealing position of the annular seal and pressure within the reaction chamber.
A pressure and temperature reaction vessel comprising:
- a containment housing having a first portion and a second portion respectively engageable so as to define a reaction chamber wherein the first portion has vent means for venting the reaction chamber;
- and
- a three position movable seal, sequentially operable through a first sealing position and a second sealing position to seal the reaction chamber from the vent means when pressure in the reaction chamber is less than a preselected maximum pressure, and through a third non-sealing position to fluidly communicate the reaction chamber with the vent means when pressure in the reaction chamber exceeds the preselected maximum pressure.
Dependencies are inferred from the claim text.