US3853269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature actuated valve
Assignee: Kysor Industrial Corp
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Filing: 1973-11-08
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Granted: 1974-12-10
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Expires: 1993-11-08
Abstract
Abstract A temperature responsive valve includes an elongated body having an axial passageway with a cylindrical valve rod extending therealong and actuated by a thermally responsive push pin. The valve rod includes an axial aperture extending through one end with a radial port remote from such end. A spool-shaped spacer is sealably fitted in the passageway and circumscribes the rod valve defining an inner chamber continuously communicating with the radial port of the valve rod and defining an outer chamber communicating with an inlet port. The spacer includes an aperture formed therethrough and coupling said inner and outer chambers. The push pin actuates the valve rod to selectively engage a ball valve positioned at one end of the body which communicates with an exhaust port. Radially extending inlet and outlet ports communicate with the passageway and inner and outer chamber through the valve rod and spacer for selectively coupling supply means to an actuation cylinder or exhausting the cylinder to atmospheric pressure as a function of temperature detected by the thermally responsive push pin.
Inventors
- 👤 W Graber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:12
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/185; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86919
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
320 words
A temperature responsive valve coupled between a supply and an actuatable element for selectively coupling said element to said supply and venting the actuatable element in response to temperature variations, said valve including: a body including a passageway extending within said body and inlet and outlet ports extending outwardly from said passageway; an exhaust port formed in said body; a ball valve coupling said exhaust port to said passageway; a thermally responsive element extending into and secured within said passageway remote from said ball valve, said thermally responsive element including a pin movable in response to temperature changes; a movable rod valve slidably fitted in said passageway and extending from said pin toward said ball valve and including an axially extending apertUre formed therein and extending from an open end thereof facing said ball valve, said rod valve including a radial port communicating with said axially extending aperture, said rod valve movable in response to movement of said pin to engage said ball valve to seal said open end when a first predetermined temperature is sensed by said thermally responsive element and open said ball valve to couple said exhaust port to said passageway when a second predetermined temperature is sensed; spool-shaped spacer means having an inner diameter greater than the outer diameter of said rod valve and an outer diameter at its mid-portion less than the inner diameter of said passageway and including a port formed through the wall of said spacer, said spacer positioned within said body to surround said rod valve; and means at opposite ends of said spacer means for sealing said spacer and rod valve to define an inner chamber between said rod valve and said spacer communicating with said radial port of said rod valve throughout the range of motion of said rod valve and an outer chamber between said spacer and said body and communicating with one of said inlet or outlet ports.
Claim 2
Dependent Claim
320 words
A temperature responsive valve coupled between a supply and an actuatable element for selectively coupling said element to said supply and venting the actuatable element in response to temperature variations, said valve including: a body including a passageway extending within said body and inlet and outlet ports extending outwardly from said passageway; an exhaust port formed in said body; a ball valve coupling said exhaust port to said passageway; a thermally responsive element extending into and secured within said passageway remote from said ball valve, said thermally responsive element including a pin movable in response to temperature changes; a movable rod valve slidably fitted in said passageway and extending from said pin toward said ball valve and including an axially extending apertUre formed therein and extending from an open end thereof facing said ball valve, said rod valve including a radial port communicating with said axially extending aperture, said rod valve movable in response to movement of said pin to engage said ball valve to seal said open end when a first predetermined temperature is sensed by said thermally responsive element and open said ball valve to couple said exhaust port to said passageway when a second predetermined temperature is sensed; spool-shaped spacer means having an inner diameter greater than the outer diameter of said rod valve and an outer diameter at its mid-portion less than the inner diameter of said passageway and including a port formed through the wall of said spacer, said spacer positioned within said body to surround said rod valve; and means at opposite ends of said spacer means for sealing said spacer and rod valve to define an inner chamber between said rod valve and said spacer communicating with said radial port of said rod valve throughout the range of motion of said rod valve and an outer chamber between said spacer and said body and communicating with one of said inlet or outlet ports.
Claim 3
Dependent Claim
28 words
The valve as defined in claim 1 wherein said passageway includes an annular shoulder spaced from said ball valve for axially supporting an end of said spacer means.
Claim 4
Dependent Claim
35 words
The valve as defined in claim 2 wherein said passageway includes a second annular shoulder spaced from said first shoulder and wherein said spacer and sealing means are positioned between said first and second shoulders.
Claim 5
Dependent Claim
70 words
The valve as defined in claim 3 wherein said rod valve includes an end cap remote from said axially extending aperture and engaging said movable pin and washer means surrounding said rod valve and securely seated against said second annular shoulder and held in place by bias means extending between said end cap and said washer to secure said spacer means in an axially fixed position in said valve body.
Claim 6
Dependent Claim
31 words
The valve as defined in claim 4 wherein said sealing means comprises a pair of O-rings sealably surrounding said rod valve and said passageway at opposite ends of said spacer means.
Claim 7
Dependent Claim
23 words
The valve as defined in claim 5 wherein said ball valve includes a spherical ball made of a polymeric material to resist corrosion.
Claim 8
Dependent Claim
17 words
The valve as defined in claim 6 wherein said spacer means is made of a polymeric material.
Claim 9
Dependent Claim
32 words
The valve as defined in claim 1 and further including a bleeder vent formed through said body and extending to said passageway at a location between said spacer means and said pin.
Claim 10
Dependent Claim
227 words
In a temperature actuated valve of the type including a valve passageway a spherical valve selectively engaged by a rod in said passageway and including an axially extending aperture formed in an end of said rod valve facing said spherical valve and a radial port communicating with said axial aperture and spaced from said end operable for sequentially cutting off a flow path between inlet and outlet ports of said valve and venting said outlet port to the atmosphere through said spherical valve opened by said rod valve actuated by a thermally responsive push pin, the improvement comprising: a spool-shaped spacer in said passageway and having annular flanges at opposite ends and a radial port formed through the wall of said spacer and positioned between said flanges, said spacer having an axially extending central aperture with a diameter greater than the outer diameter of said rod valve and wherein the outer diameter at its mid-portion of said spacer is less than the inner diameter of the valve passageway, said spacer positioned over the rod valve and extending a length corresponding at least to the distance through which said rod valve moves; means for sealing said spacer to said rod valve and said passageway at opposite ends of said spacer; and means securing said spacer in said passageway in axially fixed relationship to the body of said valve.
Claim 11
Dependent Claim
227 words
In a temperature actuated valve of the type including a valve passageway a spherical valve selectively engaged by a rod in said passageway and including an axially extending aperture formed in an end of said rod valve facing said spherical valve and a radial port communicating with said axial aperture and spaced from said end operable for sequentially cutting off a flow path between inlet and outlet ports of said valve and venting said outlet port to the atmosphere through said spherical valve opened by said rod valve actuated by a thermally responsive push pin, the improvement comprising: a spool-shaped spacer in said passageway and having annular flanges at opposite ends and a radial port formed through the wall of said spacer and positioned between said flanges, said spacer having an axially extending central aperture with a diameter greater than the outer diameter of said rod valve and wherein the outer diameter at its mid-portion of said spacer is less than the inner diameter of the valve passageway, said spacer positioned over the rod valve and extending a length corresponding at least to the distance through which said rod valve moves; means for sealing said spacer to said rod valve and said passageway at opposite ends of said spacer; and means securing said spacer in said passageway in axially fixed relationship to the body of said valve.
Claim 12
Dependent Claim
32 words
The valve as defined in claim 9 and further Including a bleeder vent formed through the body of said valve to communicate with said passageway between said spacer and said push pin.
Claim 13
Dependent Claim
43 words
The valve as defined in claim 9 and including an exhaust port wherein said spherical valve is positioned between said exhaust port and said passageway and wherein a disc-shaped filter is integrally secured within said exhaust port and spaced from said spherical valve.
Claim 14
Dependent Claim
54 words
The valve as defined in claim 11 wherein said exhaust port is integrally formed in said body of said valve and includes an internal filter supporting shoulder and wherein the end of said body adjacent said shoulder is roll-formed over the edge of said disc-shaped filter to secure said filter within said exhaust port.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |