US4376885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for producing a ring unit for the valve parts of labyrinth valves
Assignee: Individual
•
Filing: 1980-12-15
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Granted: 1983-03-15
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Expires: 2000-12-15
Abstract
Abstract For producing the seat or valve member of a labyrinth valve a number of rings of different diameter are placed one inside the other as a workpiece with their blade-like edges turned in the same direction. The group of rings is then slipped over the middle guide or stem of a jig so that the downwardly turned blade-like edges on the rings come to rest against upwardly directed ring-like blades on the jig. These blades are designed with a form answering to the form of the other valve part with which the workpiece is to be used. The rings in the workpiece are pressed down against the blades for leveling them and are then welded together, for example by electron beam welding.
Inventors
- 👤 Johannes R. Smirra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:39
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/34; B; B23; B23K; B23K15/00; B23K15/04; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4245; Y10T137/4273; Y10T137/428; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
205 words
In a process for making a ring unit for a cone labyrinth valve, said ring unit having at least two rings of which each has a blade-like edge, and being designed for use with a like ring unit in said valve for control of fluid motion by decreasing the distance between said units towards each other so that at least one blade-like edge of one said unit is between two ones of said edges on the other said unit causing fluid motion along a complexly folded path, the invention residing in the working steps of: firstly producing blade-like edges on rings with cylindrical faces, making up a workpiece by placing such rings together one inside the other with an outer face of at least one ring touching the inner face of an other ring placed round it; moving said workpiece towards a jig with ring-like blades answering to the form of said ring unit with which the rings in said workpiece are to be used in said valve so that said rings in said workpiece are in a position in relation to each other representative of their condition in use in said valve; and fixing said rings in said workpiece in relation to each other.
Claim 2
Dependent Claim
205 words
In a process for making a ring unit for a cone labyrinth valve, said ring unit having at least two rings of which each has a blade-like edge, and being designed for use with a like ring unit in said valve for control of fluid motion by decreasing the distance between said units towards each other so that at least one blade-like edge of one said unit is between two ones of said edges on the other said unit causing fluid motion along a complexly folded path, the invention residing in the working steps of: firstly producing blade-like edges on rings with cylindrical faces, making up a workpiece by placing such rings together one inside the other with an outer face of at least one ring touching the inner face of an other ring placed round it; moving said workpiece towards a jig with ring-like blades answering to the form of said ring unit with which the rings in said workpiece are to be used in said valve so that said rings in said workpiece are in a position in relation to each other representative of their condition in use in said valve; and fixing said rings in said workpiece in relation to each other.
Claim 3
Dependent Claim
16 words
The process as claimed in claim 1 wherein said rings in said workpiece are welded together.
Claim 4
Dependent Claim
20 words
The process as claimed in claim 1 wherein said rings in said workpiece are welded together by electron beam welding.
Claim 5
Independent Claim
185 words
An apparatus for producing a ring unit for a labyrinth valve, said unit being made up of at least two rings of which each has a blade-like edge, said ring unit being designed for use with a like ring unit in said valve for control of fluid motion by decreasing the distance between said unit towards each other so that at least one blade-like edge of one said unit is between two ones of said edges on the other said unit causing fluid motion along a complexly folded path, the invention residing in that the apparatus has a jig body with at least two ring-like blades answering to the form of the blade-like edges in said valve, said blades of said jig having stop edges for acting against said rings of said ring unit which is to be made, a force producing system for keeping and pushing said rings in said units against said edges on said blades on said jig unit, and a welder for welding said rings together after being put in line with each other by said blades of said jig body.
Claim 6
Independent Claim
185 words
An apparatus for producing a ring unit for a labyrinth valve, said unit being made up of at least two rings of which each has a blade-like edge, said ring unit being designed for use with a like ring unit in said valve for control of fluid motion by decreasing the distance between said unit towards each other so that at least one blade-like edge of one said unit is between two ones of said edges on the other said unit causing fluid motion along a complexly folded path, the invention residing in that the apparatus has a jig body with at least two ring-like blades answering to the form of the blade-like edges in said valve, said blades of said jig having stop edges for acting against said rings of said ring unit which is to be made, a force producing system for keeping and pushing said rings in said units against said edges on said blades on said jig unit, and a welder for welding said rings together after being put in line with each other by said blades of said jig body.
Claim 7
Dependent Claim
37 words
An apparatus as claimed in claim 4 wherein the welder is an electron beam welder designed for welding together the rings, after being positioned in relation to each other on said jig body, in a radial direction.
Claim 8
Dependent Claim
54 words
An apparatus as claimed in claim 4 having a middle stem on said jig body, said stem having a diameter equal to the inner diameter of an innermost ring in said ring unit, and a force producing system for keeping in position and pushing said rings against said jig blades of said jig body.
Claim 9
Dependent Claim
27 words
An apparatus as claimed in claim 4 having spring steel fingers for pushing said rings of said ring unit against said jig blades of said jig body.
Claim 10
Dependent Claim
34 words
An apparatus as claimed in claim 4 in which the jig body, at least near the jig blades, is made up of concentric jig rings, each having one of said jig blades on it.
Claim 11
Dependent Claim
19 words
An apparatus as claimed in claim 4 wherein at their stop edges the jig blades have a rectangular cross-section.
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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) | 1986-03-14 | 1986-09-13 | 1987-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-14 | 1990-09-13 | 1991-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-14 | 1994-09-13 | 1995-03-15 | $7700.00 | Window Closed / Lapsed |