Patent US3911546A successfully refreshed from Google Patents.
US3911546A
Expired / Lapsed
US
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Method of forming head member having integral valve seats for reed valve
Assignee: Black and Decker Corp
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Filing: 1974-06-28
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Granted: 1975-10-14
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Expires: 1994-06-28
Abstract
Abstract A method for forming integral valve seats in a valve head member for a reed valve assembly in which the valve seats are formed by coining the peripheral portions about valve ports to form smooth raised work hardened valve seat surfaces.
Inventors
- 👤 Martin Omer Schrock
- 👤 Albert Andreas Wilhelmi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:48
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/02; B21D28/06; B21D22/00; B21D22/02; B21D22/04; B21D28/16; B21K; B21K1/00; B21K1/20; B21K1/24; F; F16; F16K; F16K15/00; F16K15/14; F16K15/1402; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7839; Y10T137/784; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49409
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
195 words
A method of forming a valve seat for a reed valve of the type having a valve seat disposed about the periphery of a valve port in a head member, and a reed member mounted on one side of the head member in cooperative relationship with said valve seat, said method comprising the steps of: forming an aperture within sheet metal head stock, said stock having spaced apart parallel surfaces; providing a first die having a generally planar surface and a recessed area in its generally planar surface of greater diameter than said aperture in said head stock, said recessed area having a smooth surface parallel to the generally planar surface of the die; placing the stock adjacent to the generally planar surface of the first die with the aperture in the head stock in concentric alignment with the recess in the die; and deforming peripheral portions of the stock adjacent to the aperture into said recessed area of said first die until the peripheral portions contact the smooth surface of the recessed area to form a raised valve seat having a smooth work hardened surface parallel to the adjacent surface of the head stock.
Claim 2
Independent Claim
195 words
A method of forming a valve seat for a reed valve of the type having a valve seat disposed about the periphery of a valve port in a head member, and a reed member mounted on one side of the head member in cooperative relationship with said valve seat, said method comprising the steps of: forming an aperture within sheet metal head stock, said stock having spaced apart parallel surfaces; providing a first die having a generally planar surface and a recessed area in its generally planar surface of greater diameter than said aperture in said head stock, said recessed area having a smooth surface parallel to the generally planar surface of the die; placing the stock adjacent to the generally planar surface of the first die with the aperture in the head stock in concentric alignment with the recess in the die; and deforming peripheral portions of the stock adjacent to the aperture into said recessed area of said first die until the peripheral portions contact the smooth surface of the recessed area to form a raised valve seat having a smooth work hardened surface parallel to the adjacent surface of the head stock.
Claim 3
Dependent Claim
110 words
The method set forth in claim 1 in which said deforming step is accomplished by providing a second die having a generally planar surface parallel to and corresponding to the recessed area in said first die, said second die being disposed in concentric alignment with said recessed area on the opposite side of said head stock, and moving the second die towards the first die until it contacts the other surface of said head stock and subsequently continuing movement of the second die towards the first die to deform the metal between the two dies until the surface of the head stock adjacent the first die contacts the recessed area.
Claim 4
Independent Claim
266 words
A method of forming a valve head member having integral valve seats for a reed valve assembly of the type having a reed valve member mounted on one side of the head member in cooperative relationship with valve seats formed in said head member, said valve seats extending about the periphery of aPertures which extend through said head member, said apertures defining valve ports; said method comprising the steps of: providing sheet metal stock which is to be formed into said head member, said sheet metal head stock having smooth opposed parallel surfaces; forming a pair of spaced apart apertures within said sheet metal head stock, providing a first die having a generally planar surface and a pair of spaced apart recessed areas in the generally planar surface, each of said recessed areas having a greater diameter than said spaced apart apertures in said stock, each of said recessed areas being of the same depth, and each of said recessed areas having a smooth surface parallel to the generally planar surface of the die; placing one surface of the sheet metal head stock adjacent the generally planar surface of the die with the apertures in the sheet metal head stock in concentric alignment with the recesses in the die; and simultaneously deforming the peripheral portions of the sheet metal head stock adjacent the apertures into said recessed areas of the die until the peripheral portions contact the smooth surface of the recessed area to form raised integral valve seats having a smooth work hardened surface parallel to the adjacent surface of the sheet metal head stock.
Claim 5
Independent Claim
266 words
A method of forming a valve head member having integral valve seats for a reed valve assembly of the type having a reed valve member mounted on one side of the head member in cooperative relationship with valve seats formed in said head member, said valve seats extending about the periphery of aPertures which extend through said head member, said apertures defining valve ports; said method comprising the steps of: providing sheet metal stock which is to be formed into said head member, said sheet metal head stock having smooth opposed parallel surfaces; forming a pair of spaced apart apertures within said sheet metal head stock, providing a first die having a generally planar surface and a pair of spaced apart recessed areas in the generally planar surface, each of said recessed areas having a greater diameter than said spaced apart apertures in said stock, each of said recessed areas being of the same depth, and each of said recessed areas having a smooth surface parallel to the generally planar surface of the die; placing one surface of the sheet metal head stock adjacent the generally planar surface of the die with the apertures in the sheet metal head stock in concentric alignment with the recesses in the die; and simultaneously deforming the peripheral portions of the sheet metal head stock adjacent the apertures into said recessed areas of the die until the peripheral portions contact the smooth surface of the recessed area to form raised integral valve seats having a smooth work hardened surface parallel to the adjacent surface of the sheet metal head stock.
Claim 6
Dependent Claim
95 words
The method set forth in claim 3 in which said first die has an additional recessed area of equal depth to the first two spaced apart areas, the additional recessed area lying midway between the two recessed areas, said method including the step of deforming sheet metal head stock material lying between said spaced apart apertures into said additional recessed area to form a raised portion lying in the same plane as the raised valve seats at the same time the peripheral portions are deformed; and mounting a reed valve member onto said raised portion.
Claim 7
Dependent Claim
127 words
The method set forth in claim 3 in which said deforming step is accomplished by providing a second die having generally planar surfaces parallel to and corresponding to the said recessed areas in said first die, the planar surfaces of said second die being disposed on the opposite side of said sheet metal head stock in concentric alignment with said recessed areas in said first die, moving the second die toward the first die until it contacts said opposite side of said sheet metal head stock, and subsequently continuing movement of the second die towards the first die to deform the sheet metal head stock between the two dies until said one surface of the sheet metal head stock adjacent the first die contacts the recessed areas.
Claim 8
Dependent Claim
24 words
The method set forth in claim 3 wherein said spaced apart apertures are formed within said sheet metal head stock by a punching operation.
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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) | 1978-10-13 | 1979-04-14 | 1979-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-13 | 1983-04-14 | 1983-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-13 | 1987-04-14 | 1987-10-14 | $7700.00 | Window Closed / Lapsed |