Expansion temperature sensing means, in particular for medical apparatus

Claim 2

An expansion temperature sensing device particularly for the control of valves of medical devices, such as breathing apparatus and vaporizers for anesthetics, comprising a housing defining a fluid chamber, inlet passage means connected into said fluid chamber and discharge passage means connected from said fluid chamber to the exterior of said housing, an expansionable temperature sensing means in said fluid chamber, control means connected to said sensing means and being movable thereby for regulating the flow from said inlet to said discharge, a transmission mechanism connected between said sensing means and said control means for translating a linear adjustable movement of said sensing means in dependence on the absolute adjusting movement thereof into a non-linear adjusting movement length in dependence on the absolute adjusting movement change, said transmission mechanism including a movable member connected to said sensing means, said sensing means being movable in accordance with temperature changes, said movable member including an upper portion adapted to be connected to flow control means and a lower portion, a lever member pivotally mounted at one end being connected to said lower portion, and a pressure surface plate member connected to said upper portion and having a curved portion engaged over said lever member.

Claim 3

A temperature responsive device for controlling the flow of fluid particularly for the control of fluid in medical devices, such as breathing apparatus and a vaporizer for anesthetics, comprising a housing defining a fluid chamber for a fluid, such as an anesthetic, said housing having an inlet for the inflow of fluid and an outlet for the outflow of fluid, a pressure compensating passage for the fluid defined in said housing from said inlet into said fluid chamber, a first movable valve defining a first valve flow surface having an expansible temperature responsive portion supported in said fluid chamber and being expansible and contractable with temperature and pressure changes to shift said movable first valve member correspondingly, a second movable valve member defining a second valve flow surface spaced from said first flow surface and defining a flow passage from said fluid chamber to said outlet between said second flow surface and said first flow surface, said second valve member also defining a third flow surface which is spaced from a portion of said housing and defining a by-pass passage from said inlet to said discharge between said third flow surface and said portion of said housing, said first movable valve member including a rod portion terminating in an end which is connected to a bellows and is movable by said bellows upon expansion and contraction thereof, said bellows comprising said temperature responsive portion, said rod member including an upper portion and a lower portion, a lever pivotally mounted at one end and being connected intermediate its length to said lower portion and a curved plate connected to said upper portion and engaged over said lever, said plate and said lever constituting a transmission for translating a linear adjusting path change in dependence on the absolute adjusting path length into a non-linear adjusting path change in dependence on the absolute adjusting path length.

Claim 4

A temperature responsive device for controlling the flow of fluid particularly for the control of fluid in medical devices, such as breathing apparatus and a vaporizer for anesthetics, comprising a housing defining a fluid chamber for a fluid, such as an anesthetic, said housing having an inlet for the inflow of fluid and an outlet for the outflow of fluid, a pressure compensating passage for the fluid defined in said housing from said inlet into said fluid chamber, a first movable valve defining a first valve flow surface having an expansible temperature responsive portion supported in said fluid chamber and being expansible and contractable with temperature and pressure changes to shift said movable first valve member correspondingly, a second movable valve member defining a second valve flow surface spaced from said first flow surface and defining a flow passage from said fluid chamber to said outlet between said second flow surface and said first flow surface, said second valve member also defining a third flow surface which is spaced from a portion of said housing and defining a by-pass passage from said inlet to said discharge between said third flow surface and said portion of said housing, said first movable valve member including a rod portion terminating in an end which is connected to a bellows and is movable by said bellows upon expansion and contraction thereof, said bellows comprising said temperature responsive portion, said rod member including an upper portion and a lower portion, a lever pivotally mounted at one end and being connected intermediate its length to said lower portion and a curved plate connected to said upper portion and engaged over said lever, said plate and said lever constituting a transmission for translating a linear adjusting path change in dependence on the absolute adjusting path length into a non-linear adjusting path change in dependence on the absolute adjusting path length.

Claim 5

A temperature responsive device for controlling the flow of fluid particularly for the control of fluid in medical devices, such as breathing apparatus and a vaporizer for anesthetics, comprising a housing defining a fluid chamber for a fluid, such as an anesthetic, said housing having an inlet for the inflow of fluid and an outlet for the outflow of fluid, a pressure compensating passage for the fluid defined in said housing from said inlet into said fluid chamber, a first movable valve defining a first valve flow surface having an expansible temperature responsive portion supported in said fluid chamber and being expansible and contrActable with temperature and pressure changes to shift said movable first valve member correspondingly, a second movable valve member defining a second valve flow surface spaced from said first flow surface and defining a flow passage from said fluid chamber to said outlet between said second flow surface and said first flow surface, said second valve member also defining a third flow surface which is spaced from a portion of said housing and defining a by-pass passage from said inlet to said discharge between said third flow surface and said portion of said housing, a second by-pass passage in said housing for the flow of fluid from said inlet to said discharge, means for selectively opening and closing first passage in order to selectively permit substantially complete or partial flow through said by-pass, a slide valve member mounted in said housing for slide movement between a position in which it blocks said by-pass passage and a position in which it opens said by-pass passage, and a hand-wheel connected to said second movable valve member and being rotatable thereon to shift said slide valve between an opened and closed position.

Claim 6

A temperature responsive device for controlling the flow of fluid particularly for the control of fluid in medical devices, such as breathing apparatus and a vaporizer for anesthetics, comprising a housing defining a fluid chamber for a fluid, such as an anesthetic, said housing having an inlet for the inflow of fluid and an outlet for the outflow of fluid, a pressure compensating passage for the fluid defined in said housing from said inlet into said fluid chamber, a first movable valve defining a first valve flow surface having an expansible temperature responsive portion supported in said fluid chamber and being expansible and contrActable with temperature and pressure changes to shift said movable first valve member correspondingly, a second movable valve member defining a second valve flow surface spaced from said first flow surface and defining a flow passage from said fluid chamber to said outlet between said second flow surface and said first flow surface, said second valve member also defining a third flow surface which is spaced from a portion of said housing and defining a by-pass passage from said inlet to said discharge between said third flow surface and said portion of said housing, a second by-pass passage in said housing for the flow of fluid from said inlet to said discharge, means for selectively opening and closing first passage in order to selectively permit substantially complete or partial flow through said by-pass, a slide valve member mounted in said housing for slide movement between a position in which it blocks said by-pass passage and a position in which it opens said by-pass passage, and a hand-wheel connected to said second movable valve member and being rotatable thereon to shift said slide valve between an opened and closed position.

Claim 7

An expansion temperature sensing device particularly for the control of valves of medical devices, such as breathing apparatus and vaporizers for anesthetics, comprising a housing defining a fluid chamber, inlet passage means connected into said fluid chamber and discharge passage means connected from said fluid chamber to the exterior of said housing, an expansionable temperature sensing means in said fluid chamber, control means connected to said sensing means and being movable thereby for regulating the flow from said inlet to said discharge, a transmission mechanism connected between said sensing means and said control means for translating a linear adjustable movement of said sensing means in dependence on the absolute adjusting movement thereof into a non-linear adjusting movement length in dependence on the absolute adjusting movement changes, said transmission mechanism including a first movable rod terminating in an end which is connected to said sensing means and is movable upon expansion and contraction thereof, said rod including an upper portion and a lower portion, a lever pivotally mounted at one end and being connected intermediate its length to said lower portion, and a curved plate connected to said upper portion and engaged over said lever, said plate and said lever constituting said transmission mechanism for translating a linear adjusting path change of said sensing means into a non-linear adjusting path change.

Claim 8

An expansion temperature sensing device particularly for the control of valves of medical devices, such as breathing apparatus and vaporizers for anesthetics, comprising a housing defining a fluid chamber, inlet passage means connected into said fluid chamber and discharge passage means connected from said fluid chamber to the exterior of said housing, an expansionable temperature sensing means in said fluid chamber, control means connected to said sensing means and being movable thereby for regulating the flow from said inlet to said discharge, a transmission mechanism connected between said sensing means and said control means for translating a linear adjustable movement of said sensing means in dependence on the absolute adjusting movement thereof into a non-linear adjusting movement length in dependence on the absolute adjusting movement changes, said transmission mechanism including a first movable rod terminating in an end which is connected to said sensing means and is movable upon expansion and contraction thereof, said rod including an upper portion and a lower portion, a lever pivotally mounted at one end and being connected intermediate its length to said lower portion, and a curved plate connected to said upper portion and engaged over said lever, said plate and said lever constituting said transmission mechanism for translating a linear adjusting path change of said sensing means into a non-linear adjusting path change.

Claim 9

A device, according to claim 4, wherein said slide valve is a double valve and in an end position may close off at least a portion of said pressure compensating passage and said by-pass passage.

Claim 10

A device, according to claim 5, wherein said valve also includes means for venting said fluid chamber to the atmosphere.