Patent US3830607A successfully refreshed from Google Patents.
US3830607A
Expired / Lapsed
US
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Apparatus for compacting material
Assignee: Gleason Works
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Filing: 1973-01-05
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Granted: 1974-08-20
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Expires: 1993-01-05
Abstract
Abstract An improved apparatus for applying a relatively uniformly distributed pressure to a quantity of compactible material, such as a ferrous metal powder, is described. The apparatus includes an essentially self-contained isostatic system within a pressure vessel, and there is no requirement for injection of a high pressure fluid into the pressure vessel from an external source. A deformable mold means is suspended within the pressure vessel by a support means arranged to be free to move for a limited distance within the pressure vessel during a pressurization of the chamber within the vessel. The apparatus includes means for filling the deformable mold means with the compactible material together with means for closing the chamber of the pressure vessel in which the deformable mold means is inserted so as to allow a relatively high compacting pressure to be applied to the material without producing unwanted stresses or design variation in the final product to be produced.
Inventors
- 👤 K Baxendale
- 👤 R Waasdorp
- 👤 J Evershed
- 👤 M Howlett
- 👤 W Bergemann
- 👤 D Camp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:40
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/001
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
191 words
A high production rate apparatus for applying a relatively uniformly distributed pressure to a quantity of compactible material placed in a chamber defined within a pressure vessel, comprising a pressure vessel having a chamber defined therein, a deformable mold means which can be suspended within the chamber of said pressure vessel a self-contained isostatic system carried within said pressure vessel for applying a compacting force to a quantity of material placed within said deformable mold means, closing means for closing said chamber during a compacting operation, pressurizing means operating through said closing means for pressurizing and depressurizing said isostatic system during a compacting operation without the introduction of high pressure fluid into the pressure vessel from an external source during such pressurizing, said pressurizing means comprising (a) a first piston means which can be advanced into said chamber to apply a pressurizing force to said fluid carried within the chamber, and (b) a second piston means for multiplying the force applied to said fluid by the first piston means, and a hydraulic control system operated externally of said pressure vessel for controlling the movements of said first and second piston means.
Claim 2
Dependent Claim
191 words
A high production rate apparatus for applying a relatively uniformly distributed pressure to a quantity of compactible material placed in a chamber defined within a pressure vessel, comprising a pressure vessel having a chamber defined therein, a deformable mold means which can be suspended within the chamber of said pressure vessel a self-contained isostatic system carried within said pressure vessel for applying a compacting force to a quantity of material placed within said deformable mold means, closing means for closing said chamber during a compacting operation, pressurizing means operating through said closing means for pressurizing and depressurizing said isostatic system during a compacting operation without the introduction of high pressure fluid into the pressure vessel from an external source during such pressurizing, said pressurizing means comprising (a) a first piston means which can be advanced into said chamber to apply a pressurizing force to said fluid carried within the chamber, and (b) a second piston means for multiplying the force applied to said fluid by the first piston means, and a hydraulic control system operated externally of said pressure vessel for controlling the movements of said first and second piston means.
Claim 3
Dependent Claim
37 words
The apparatus of claim 1 wherein said isostatic system includes a quantity of fluid carried within said chamber so as to contact outside surfaces of said deformable mold means during a pressurizing of the deformable mold means.
Claim 4
Dependent Claim
51 words
The improvement of claim 1 wherein said chamber of said pressure vessel is defined by a bore extending completely through the pressure vessel to thereby provide oppositely directed openings extending along the axis of said bore, and wherein said closing means comprises separate closing means for each end of said bore.
Claim 5
Dependent Claim
55 words
The improvement of claim 3, and including a compacting frame for receiving said pressure vessel during a compacting operation, said compacting frame having a pair of spaced-apart pressure plate means which are secured in fixed positions for receiving the pressure vessel therebetween for locking said closing means of the pressure vessel during a compacting operation.
Claim 6
Dependent Claim
25 words
The improvement of claim 4, and including moving means for advancing said pressure vessel into and out of a position between said pressure plate means.
Claim 7
Dependent Claim
46 words
The improvement of claim 4, and including a spacer plate means which can be inserted between one end of said pressure vessel and one of said pressure plate means to substantially fill a clearance space provided between said pressure vessel and said one pressure plate means.
Claim 8
Dependent Claim
61 words
The improvement of claim 4 and including a second pressure vessel of the same design as said first-named pressure vessel, said two pressure vessels being carried at opposite ends of a support structure so that the two pressure vessels can be rotated about a common axis to provide for alternating placement of each vessel between said pair of pressure plate means.
Claim 9
Independent Claim
314 words
An apparatus for containing a quantity of material to be compacted by the force of a pressurized fluid, said apparatus being of a type which includes a cylindrical pressure vessel having a bore extending therethrough with the center axis of the bore being coincident with the center axis of the pressure vessel, a deformable mold carried within said bore for receiving a quantity of material to be compacted, a first closing means for closing one end of said bore of said pressure vessel, a second closing means for closing a second end of said bore of said pressure vessel, a pair of spaced apart pressure plates for receiving said pressure vessel therebetween during a compacting operation, and moving means for advancing the pressure vessel to a position between said pair of spaced apart pressure plates, the improvement comprising an essentially self-contained isostatic system carried within the bore of said pressure vessel, and pressurizing means operating through one of said closing means for imparting a pressure to said isostatic system contained within said pressure vessel so as to (a) expand said first and second closing means outwardly in opposite directions against respective pressure plate means, thereby forming a tightly sealed relationship between the pressure vessel and said pressure plate means while maintaining a sealed relationship between said closing means and the pressure vessel, and to (b) impart a relatively high isostatic force against material contained within said deformable mold, said pressuring means comprising a piston means fitted within a bore formed through one of said closing means, and including actuating means carried externally of said pressure vessel for multiplying force on said piston means, said actuating means being separable from said piston means during depressurization of said isostatic system so that the piston means can separate from the actuating means when said pressure vessel is moved out of its operating position between said pressure plates.
Claim 10
Independent Claim
314 words
An apparatus for containing a quantity of material to be compacted by the force of a pressurized fluid, said apparatus being of a type which includes a cylindrical pressure vessel having a bore extending therethrough with the center axis of the bore being coincident with the center axis of the pressure vessel, a deformable mold carried within said bore for receiving a quantity of material to be compacted, a first closing means for closing one end of said bore of said pressure vessel, a second closing means for closing a second end of said bore of said pressure vessel, a pair of spaced apart pressure plates for receiving said pressure vessel therebetween during a compacting operation, and moving means for advancing the pressure vessel to a position between said pair of spaced apart pressure plates, the improvement comprising an essentially self-contained isostatic system carried within the bore of said pressure vessel, and pressurizing means operating through one of said closing means for imparting a pressure to said isostatic system contained within said pressure vessel so as to (a) expand said first and second closing means outwardly in opposite directions against respective pressure plate means, thereby forming a tightly sealed relationship between the pressure vessel and said pressure plate means while maintaining a sealed relationship between said closing means and the pressure vessel, and to (b) impart a relatively high isostatic force against material contained within said deformable mold, said pressuring means comprising a piston means fitted within a bore formed through one of said closing means, and including actuating means carried externally of said pressure vessel for multiplying force on said piston means, said actuating means being separable from said piston means during depressurization of said isostatic system so that the piston means can separate from the actuating means when said pressure vessel is moved out of its operating position between said pressure plates.
Claim 11
Dependent Claim
54 words
The improvement of claim 8 wherein said pressurizing means includes an intensifier means for multiplying the pressure on said isostatic system in said chamber, and including replenisher means in combination with said intensifier means for automatically supplying additional fluid to said chamber in response to a loss of fluid from the chamber through leakage.
Claim 12
Dependent Claim
22 words
The improvement of claim 9 wherein said intensifier means is operated from a hydraulic control circuit carried externally of said pressure vessel.
Claim 13
Dependent Claim
25 words
The improvement of claim 10 wherein said hydraulic control circuit includes control means for depressurizing said chamber through a reverse operation of said intensifier means.
Claim 14
Dependent Claim
75 words
The apparatus of claim 8 wherein said pressurE vessel can be moved between (a) said position between said pair of spaced apart pressure plate means and (b) a position away from said pressure plate means where said pressure vessel can be loaded and unloaded, and including loading means for placing said quantity of material into said deformable mold in said pressure vessel, and unloading means for removing the material from said chamber after being compacted.
Claim 15
Dependent Claim
144 words
In apparatus for compacting a powder material by applying a force to the material while the material is carried in a deformable mold means suspended within a chamber defined in a pressure vessel, the improvement in said deformable mold means and said pressure vessel comprising closing means for closing and sealing an opening in said chamber, and supporting means for suspending said deformable mold means in said chamber so that the deformable mold means can follow limited movement of said closing means away from said chamber when pressure conditions are increased in the chamber, and high pressure sealing means associated with said supporting means for sealing the opening of said chamber when said closing means is moved to a position for closing the chamber, said sealing means being arranged to remain in a working position during opening and closing movements of said closing means.
Claim 16
Dependent Claim
144 words
In apparatus for compacting a powder material by applying a force to the material while the material is carried in a deformable mold means suspended within a chamber defined in a pressure vessel, the improvement in said deformable mold means and said pressure vessel comprising closing means for closing and sealing an opening in said chamber, and supporting means for suspending said deformable mold means in said chamber so that the deformable mold means can follow limited movement of said closing means away from said chamber when pressure conditions are increased in the chamber, and high pressure sealing means associated with said supporting means for sealing the opening of said chamber when said closing means is moved to a position for closing the chamber, said sealing means being arranged to remain in a working position during opening and closing movements of said closing means.
Claim 17
Dependent Claim
96 words
The apparatus of claim 13 and including an improved means for applying a force to material in said deformable mold means comprising an isostatic system carried within said pressure vessel, pressurizing means operating through a closing means for pressurizing the isostatic system carried within said pressure vessel, said pressurizing means being in the form of a piston means which can be advanced through a bore formed through said pressure vessel so as to apply a compression force to said isostatic system without the introduction of high pressure fluid into the pressure vessel from an external source.
Claim 18
Dependent Claim
82 words
The apparatus of claim 14 wherein said piston means of said pressurizing means is actuated by a second piston means having a larger diameter than said first-named piston means so as to multiply the force applied to said isostatic system, and wherein said second piston means is fitted within a chamber carried by a compacting frame structure, and said first-named piston means is carried within said pressure vessel so that the pressure vessel can be moved relative to said compacting frame structure.
Claim 19
Dependent Claim
51 words
The apparatus of claim 13 wherein said supporting means comprises an annular sleeve structure which can be suspended within a bore defined in said pressure vessel for receiving and supporting said deformable mold means, said annular sleeve structure being open at one end to allow passage of a plug means therethrough.
Claim 20
Dependent Claim
46 words
The apparatus of claim 13 and including a hydraulic control circuit having means for controlling a depressurizing of said pressure vessel, said means for controlling depressurizing including means for establishing an initial relatively slow rate of decompression followed by a relatively more rapid rate of decompression.
Claim 21
Dependent Claim
35 words
The apparatus of claim 14 wherein said piston means includes a replenishing means for automatically supplying a metered volume of fluid into said pressure vessel upon withdrawal of the piston means from the pressure vessel.
Claim 22
Dependent Claim
36 words
The apparatus of claim 1 wherein said first piston means includes a replenishing means for automatically supplying a metered volume of fluid into said pressure vessel upon withdrawal of said first piston from the pressure vessel.
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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) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |