US3633607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aseptic valves
Assignee: ATI Ladish Co Inc
•
Filing: 1970-07-06
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Granted: 1972-01-11
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Expires: 1990-07-06
Abstract
Abstract There is a valve body with a detachable bonnet, the latter having a steam chamber thereon through which the valve stem extends so that a portion of the valve stem which is exposed to the atmosphere in certain positions, is sterilized by the steam chamber when the valve stem is reciprocated inwardly. There is an annular sealing gasket between the bonnet and the top of the valve body with a rubber ring around the gasket to form an annular steam chamber inwardly of the rubber ring. A clamping ring which acts on annular flanges of the bonnet and valve has a slot through which the steam nipple projects.
Inventors
- 👤 Bruno H Werra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:19
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/08; F16K41/00; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4245; Y10T137/4266; Y10T137/5762
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
154 words
In a valve having a cup-shaped body with an annular connection flange, said flange having an end face, and said valve having a bonnet formed with a base, with said base having an annular end face portion near its periphery seated over the end face of said annular flange of the valve body, an inner ringshaped gasket between said end face of the flange and the annular end face portion of the bonnet base, said end faces having opposed recessed portions shaped to receive said gasket, outer ring-shaped means outwardly of the gasket and between said end faces forming an annular chamber for an aseptic medium between said end faces, said chamber being so located that bacteria entering from the exterior are sterilized by the aseptic medium before they can pass the gasket to enter the interior of the valve body, and means for detachably clamping the bonnet base on said valve body flange.
Claim 2
Dependent Claim
154 words
In a valve having a cup-shaped body with an annular connection flange, said flange having an end face, and said valve having a bonnet formed with a base, with said base having an annular end face portion near its periphery seated over the end face of said annular flange of the valve body, an inner ringshaped gasket between said end face of the flange and the annular end face portion of the bonnet base, said end faces having opposed recessed portions shaped to receive said gasket, outer ring-shaped means outwardly of the gasket and between said end faces forming an annular chamber for an aseptic medium between said end faces, said chamber being so located that bacteria entering from the exterior are sterilized by the aseptic medium before they can pass the gasket to enter the interior of the valve body, and means for detachably clamping the bonnet base on said valve body flange.
Claim 3
Dependent Claim
59 words
A valve as claimed in claim 1 in which annular portions of said end faces which are outward of said recessed portions are spaced apart, and in which the outer ring-shaped means is located between said spaced-apart end face portions and comprises a flexible ring, the aseptic chamber being located inwardly of the inner diameter of said flexible ring.
Claim 4
Dependent Claim
47 words
A valve as claimed in claim 2 in which the outside diameter of the flexible ring is bonded to a wider metal band having annular portions on each side of the flexible ring which seat against the outer peripheries of the valve body flange and bonnet base.
Claim 5
Dependent Claim
26 words
A valve as claimed in claim 2 in which the flexible ring has an outwardly projecting nipple having inlet and outlet passageways for an aseptic medium.
Claim 6
Dependent Claim
20 words
A valve as claimed in claim 4 in which the metal band has a slot through which the nipple projects.
Claim 7
Dependent Claim
44 words
A value as claimed in claim 4 in which the means for detachably clamping the bonnet base on the valve body flange is a clamping ring, and in which said clamping ring has a slot through which said nipple of the flexible ring projects.
Claim 8
Dependent Claim
92 words
A valve as claimed in claim 2 in which the outer periphery of the inner ring-shaped gasket has an annular recess and in which there is a metal alignment ring with a portion seated in said recess and with a portion projecting outwardly therefrom, said portion which projects outwardly serving to maintain the spacing between the end face portions of the valve body flange and bonnet, and there being cooperating shoulder means on said last-mentioned end face portions and on the metal alignment ring for aligning the bonnet with the valve body.
Claim 9
Dependent Claim
66 words
A valve as claimed in claim 1 in which the opposed end faces of the flange and bonnet base have circular grooves communicating with said gasket-receiving recessed portions, and in which the inner gAsket has circular beads of such size and so positioned as to fit within the grooves while maintaining the internal diameter of the gasket flush with the internal diameter of the valve body.
Claim 10
Dependent Claim
59 words
A valve as claimed in claim 1 in which there is a dam across the annular aseptic chamber, and in which the means for circulating an aseptic medium through the aseptic chamber includes an inlet communicating with the chamber on one side of the dam and an outlet communicating with the chamber on the other side of the dam.
Claim 11
Dependent Claim
124 words
In a valve having a cup-shaped body with an annular connection flange, said flange having an end face, and said valve having a bonnet formed with a base, with said base having an annular end face portion near its periphery seated over the end face of said annular flange of the valve body, ring-shaped gasket means between said end face portions, said gasket means including an annular aseptic chamber, means for circulating an aseptic medium through said chamber, said chamber being so positioned that bacteria entering between said end faces from the exterior are sterilized by an aseptic medium before they can enter the interior of the valve body, and means for detachably maintaining said annular connection flange and bonnet base in assembled condition.
Claim 12
Dependent Claim
124 words
In a valve having a cup-shaped body with an annular connection flange, said flange having an end face, and said valve having a bonnet formed with a base, with said base having an annular end face portion near its periphery seated over the end face of said annular flange of the valve body, ring-shaped gasket means between said end face portions, said gasket means including an annular aseptic chamber, means for circulating an aseptic medium through said chamber, said chamber being so positioned that bacteria entering between said end faces from the exterior are sterilized by an aseptic medium before they can enter the interior of the valve body, and means for detachably maintaining said annular connection flange and bonnet base in assembled condition.
Claim 13
Dependent Claim
134 words
A valve as claimed in claim 10 in which the bonnet base has a bore and has a tubular housing part aligned with said bore, with said bonnet base and housing part being of one-piece construction, in which there is a valve stem with a portion projecting slideably through the bore of the bonnet and through the housing, with the latter forming a chamber surrounding a portion of the valve stem, in which there is an aseptic medium in said chamber whereby portions of the valve stem which are exposed to the atmosphere in certain positions will be sterilized when the valve stem is pushed inwardly, and in which there is sealing means movable with the valve stem and located inwardly of said chamber for effecting a seal between the bonnet bore and stem.
Claim 14
Dependent Claim
45 words
A valve as claimed in claim 11 in which the aseptic chamber surrounding the valve stem is of relatively large radial and axial dimension to provide a large volume for asepticizing medium relative to the mass of adjacent metal of the housing and valve stem.
Claim 15
Dependent Claim
45 words
A valve as claimed in claim 11 in which the gasket means which is at the joint between the bonnet base and valve body includes an annular compressible portion inwardly of the annular chamber for the aseptic medium adjacent the interior of the valve body.
Claim 16
Dependent Claim
81 words
A valve as claimed in claim 11 in which the tubular housing part which forms a chamber for an aseptic medium around the valve stem projects outwardly from the cover, and in which the cover also has an integral boss projecting into the valve body through which the bore of the bonnet base extends and through which the valve stem slides, and in which the sealing means which is movable with the valve stem is between the valve stem and boss.
References Cited (Backward Citations)
US2764995A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |