Patent US3700206A successfully refreshed from Google Patents.
US3700206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve assembly
Assignee: Henry Valve Co
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Filing: 1971-04-15
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Granted: 1972-10-24
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Expires: 1991-04-15
Abstract
Abstract The valve assembly includes an integral member or molded part which serves as a one-piece valve seat disc and which is mounted on a metal valve stem received in a valve body and arranged for movement along an axis essentially coaxial with the axis of a valve seat at the entrance to a passage within the valve body. The valve stem has a button at its inner end for mounting the valve seat disc and is rotatably reciprocal in the valve body for moving the valve seat disc to and from the valve seat. The valve seat disc is made from a material which is stiff, but resilient, and which has a low coefficient of friction with respect to metal to permit relative rotation between the disc and the stem when the stem bears against the disc. The disc is defined by a seating section having a seating surface for seating on the valve seat and a valve stem coupling section having an opening in which the button is received. The opening has a lateral extent somewhat greater than the lateral extent of the button and is characterized by projections therein which snap-fittingly receive and retain the button within the opening for securely holding the valve seat disc to the inner end of the valve stem and yet allowing it to move a limited distance laterally of the axis of the valve stem so that the disc will properly seat itself on, and align itself with respect to, the valve seat. In one embodiment, the projections have axially extending protuberances thereon which bear against the underside of the button to firmly hold the disc against axial movement thereof relative to the stem.
Inventors
- 👤 Evan Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:51
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/48; F16K1/482; Y; Y10; Y10T; Y10T24/00; Y10T24/50
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
360 words
In a valve assembly, the combination of an axially extending valve stem and a valve seat disc mounted on one end of said valve stem, said valve stem having a valve seat disc coupling formation at one end thereof which includes a radially extending disc shaped button, said valve seat disc being made from a material which has a low coefficient of friction with respect to the material from which said stem is made and which is stiff but resilient, said valve seat disc having a central axis and a peripheral side surface facing laterally outwardly from said central axis, and said valve seat disc being defined by a seating section Having a seating surface and a valve stem coupling section having an axially facing end surface and first and second generally U-shaped notches which extend laterally of said valve seat disc for receiving said coupling formation at said one end of said valve stem, said first generally U-shaped notch opening, at the top of the U, onto said peripheral side surface, and said second generally U-shaped notch, which is smaller than said first U-shaped notch, also opening at the top of the U onto said peripheral side surface, and said second generally U-shaped notch, which is smaller than said first U-shaped notch, also opening at the top of the U onto said peripheral side surface and opening on one side onto said end surface and on the other side into said first generally U-shaped notch, and one of said notches having means for snap-fittingly receiving said coupling formation within said notches and for retaining said coupling formation within said notches when said valve seat disc is coupled to said valve stem, said valve seat disc being loosely retained on said valve stem with respect to lateral movement thereof in such a way that said valve seat disc move a small distance laterally of said valve stem to provide a valve seat disc which is self-aligning when said valve seat disc is moved into seating engagement with a valve seat, said retaining means also including means for holding said disc firmly against axial movement thereof with respect to said button.
Claim 2
Dependent Claim
360 words
In a valve assembly, the combination of an axially extending valve stem and a valve seat disc mounted on one end of said valve stem, said valve stem having a valve seat disc coupling formation at one end thereof which includes a radially extending disc shaped button, said valve seat disc being made from a material which has a low coefficient of friction with respect to the material from which said stem is made and which is stiff but resilient, said valve seat disc having a central axis and a peripheral side surface facing laterally outwardly from said central axis, and said valve seat disc being defined by a seating section Having a seating surface and a valve stem coupling section having an axially facing end surface and first and second generally U-shaped notches which extend laterally of said valve seat disc for receiving said coupling formation at said one end of said valve stem, said first generally U-shaped notch opening, at the top of the U, onto said peripheral side surface, and said second generally U-shaped notch, which is smaller than said first U-shaped notch, also opening at the top of the U onto said peripheral side surface, and said second generally U-shaped notch, which is smaller than said first U-shaped notch, also opening at the top of the U onto said peripheral side surface and opening on one side onto said end surface and on the other side into said first generally U-shaped notch, and one of said notches having means for snap-fittingly receiving said coupling formation within said notches and for retaining said coupling formation within said notches when said valve seat disc is coupled to said valve stem, said valve seat disc being loosely retained on said valve stem with respect to lateral movement thereof in such a way that said valve seat disc move a small distance laterally of said valve stem to provide a valve seat disc which is self-aligning when said valve seat disc is moved into seating engagement with a valve seat, said retaining means also including means for holding said disc firmly against axial movement thereof with respect to said button.
Claim 3
Dependent Claim
143 words
The valve assembly of claim 1 in which the second generally U-shaped notch is defined by laterally extending, oppositely facing side surfaces and an end surface connecting said notch side surfaces, and in which the means for retaining said coupling formation includes at least barbs each of which extends from one of said side surfaces in a direction toward said end surface of said second generally U-shaped notch, and each of said barbs is yieldable into a recess formed in each one of said notch side surfaces whereby, during coupling engagement of said disc and said stem, a portion of the stem can be easily and snap-fittingly forced past said barbs into, and then retained by said barbs within a bight portion of said second generally U-shaped opening defined between said barbs and said notch end surface of said second generally U-shaped notch.
Claim 4
Dependent Claim
193 words
In a valve assembly, the combination of a valve body, a threaded axially extending valve stem rotatable about its axis and axially reciprocal in said valve body, a valve seat disc, coupling means at the inner end of said valve stem for mounting said valve seat disc to said valve stem, said coupling means comprising a radially extending axially facing button, cooperating thread means on said stem and body for moving said valve seat disc to and from a valve seat in said valve body, said valve seat disc being made from a material which is stiff but resilient and which has a low coefficient of friction with respect to the material from which said stem is made, said disc being a unitary integral member shaped to include a seating portion thereof having a sealing surface for seating against said valve seat, and having a valve stem coupling section comprising socket means for mating with said axially facing button for holding said disc firmly against axial movement thereof relative to said button, and recess means for laterally shifting said disc on said button upon the lateral urging of said disc by said seat.
Claim 5
Dependent Claim
193 words
In a valve assembly, the combination of a valve body, a threaded axially extending valve stem rotatable about its axis and axially reciprocal in said valve body, a valve seat disc, coupling means at the inner end of said valve stem for mounting said valve seat disc to said valve stem, said coupling means comprising a radially extending axially facing button, cooperating thread means on said stem and body for moving said valve seat disc to and from a valve seat in said valve body, said valve seat disc being made from a material which is stiff but resilient and which has a low coefficient of friction with respect to the material from which said stem is made, said disc being a unitary integral member shaped to include a seating portion thereof having a sealing surface for seating against said valve seat, and having a valve stem coupling section comprising socket means for mating with said axially facing button for holding said disc firmly against axial movement thereof relative to said button, and recess means for laterally shifting said disc on said button upon the lateral urging of said disc by said seat.
Claim 6
Dependent Claim
221 words
In a valve assembly, the combination of a valve body, a threaded axially extending valve stem rotatable about its axis and axially reciprocal in said valve body, a valve seat disc coupling means at the inner end of said valve stem, said coupling means comprising an axially facing head which is radially enlarged with respect to the radius of the valve stem adjacent said head, said head having an end face which is perpendicular to the axis of the valve stem, cooperating thread means on said stem and body for moving said valve seat disc axially to and frOm a valve seat in said valve body, said valve seat disc being made from a material which is stiff but resilient and which has a low coefficient of friction with respect to the material from which said stem is made, said disc being a unitary integral member shaped to include a seating portion thereof having a sealing surface for seating against said valve seat, said end face contacting said seating portion, and having a valve stem coupling section providing socket means for mating with said axially facing head for holding said disc firmly against axial movement thereof relative to said head, and recess means for laterally shifting said disc on said head upon the lateral urging of said disc by said seat.
Claim 7
Dependent Claim
221 words
In a valve assembly, the combination of a valve body, a threaded axially extending valve stem rotatable about its axis and axially reciprocal in said valve body, a valve seat disc coupling means at the inner end of said valve stem, said coupling means comprising an axially facing head which is radially enlarged with respect to the radius of the valve stem adjacent said head, said head having an end face which is perpendicular to the axis of the valve stem, cooperating thread means on said stem and body for moving said valve seat disc axially to and frOm a valve seat in said valve body, said valve seat disc being made from a material which is stiff but resilient and which has a low coefficient of friction with respect to the material from which said stem is made, said disc being a unitary integral member shaped to include a seating portion thereof having a sealing surface for seating against said valve seat, said end face contacting said seating portion, and having a valve stem coupling section providing socket means for mating with said axially facing head for holding said disc firmly against axial movement thereof relative to said head, and recess means for laterally shifting said disc on said head upon the lateral urging of said disc by said seat.
Claim 8
Dependent Claim
102 words
The valve assembly of claim 4 wherein said mating means comprises a laterally extending slot in said disc, said disc and said head being so sized that said head fits snugly within said slot with respect to axial movement therein with respect to said disc and fits loosely therein with respect to lateral movement with respect to said disc, said slot having axially and oppositely facing surfaces, the axially inwardly facing surface adjacent the shank of the stem including axially extending projection, integral with said disc extending into said slot for holding said disc firmly against axial movement relative to said head.
Claim 9
Dependent Claim
18 words
The valve assembly of claim 4 wherein said end face has substantially the same radius as the head.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |