US4014090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pattern plates and method of making same
Assignee: Freeman Supply Co
•
Filing: 1975-03-10
•
Granted: 1977-03-29
•
Expires: 1995-03-10
Abstract
Abstract Method of producing plates having an identical configuration of valleys and lugs thereon so that one plate is interchangeable with another. Flat plates are provided with a pair of individual holes at opposite ends of the plate center line. Thereafter one or more valleys are machined in a predetermined spacing and location from one or both of the locating holes, and the process repeated for a plurality of plates. Lugs are produced by matching one plate with another by means of pins inserted into the locating holes, and injecting a hardenable material into the valleys. This hardenable material is bonded to the opposite plate. The machining operation of the valleys is carried out in a manner to produce randomly spaced ridges along the side surfaces of the valleys which form depressions in the side surfaces of the lugs that are cast therefrom. Molds made from the respective pattern plates have valleys with ridges therein which have an interference fit with respect to lugs of a matching mold.
Inventors
- 👤 Gerald R. Rusk
- 👤 Robert E. Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:24
CPC Classifications
B; B22; B22C; B22C7/00; B22C7/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49993; Y10T409/00; Y10T409/30; Y10T409/303752; Y10T409/303808
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
408 words
A method of producing a plurality of pattern plates having generally flat and parallel opposing faces each face of which has an imaginary center line formed by the intersection with said faces of an imaginary plane that is perpendicular to said faces, said method comprising: forming a valley in a first face of a first plate which valley has opposing side surfaces that are defined by concave surface indentations with the bottom of said indentations being aligned so that the cross section of the valley as defined by the aligned bottoms is an isosceles trapezoid, said side surfaces having ridges between the indentations which are irregularly spaced, forming a valley in the portion of the second face of the first plate as presented by rotation of the plate about a center line in the identical position as the valley in said first face and with an identical shape excepting that the ridges thereof do not correspond in position to those in said first face, repeating the forming steps in a number of plates, abutting the first face of a second plate with the second face of the first plate and with the center lines of the abutting faces in precise register so that the abutting face of one plate has a valley cover area overlying the valley in the abutting face of the other plate, providing a passageway communicating each valley or its cover area to an external plate surface, injecting a hardenable material through the passageways of the abutting plates into the valleys of the abutting faces and bonding the hardenable material onto the plate which covers the respective valleys, separating said plates, abutting the second face of the second plate with the first face of another plate and with the center lines of the abutting faces in precise register so that the abutting face of one plate has a valley cover area overlying the valley in the abutting face of the other plate, said plates having a passageway communicating each valley or its cover area to an external plate surface, injecting a hardenable material into the valleys of the abutting faces of said second and other plates and bonding the cast material onto the plate which covers the respective valley, and whereby objects cast from opposite sides of said plates have lugs with convex projections and have valleys with ridges in their side surfaces which projections and ridges engage each other when the objects are matched.
Claim 2
Independent Claim
408 words
A method of producing a plurality of pattern plates having generally flat and parallel opposing faces each face of which has an imaginary center line formed by the intersection with said faces of an imaginary plane that is perpendicular to said faces, said method comprising: forming a valley in a first face of a first plate which valley has opposing side surfaces that are defined by concave surface indentations with the bottom of said indentations being aligned so that the cross section of the valley as defined by the aligned bottoms is an isosceles trapezoid, said side surfaces having ridges between the indentations which are irregularly spaced, forming a valley in the portion of the second face of the first plate as presented by rotation of the plate about a center line in the identical position as the valley in said first face and with an identical shape excepting that the ridges thereof do not correspond in position to those in said first face, repeating the forming steps in a number of plates, abutting the first face of a second plate with the second face of the first plate and with the center lines of the abutting faces in precise register so that the abutting face of one plate has a valley cover area overlying the valley in the abutting face of the other plate, providing a passageway communicating each valley or its cover area to an external plate surface, injecting a hardenable material through the passageways of the abutting plates into the valleys of the abutting faces and bonding the hardenable material onto the plate which covers the respective valleys, separating said plates, abutting the second face of the second plate with the first face of another plate and with the center lines of the abutting faces in precise register so that the abutting face of one plate has a valley cover area overlying the valley in the abutting face of the other plate, said plates having a passageway communicating each valley or its cover area to an external plate surface, injecting a hardenable material into the valleys of the abutting faces of said second and other plates and bonding the cast material onto the plate which covers the respective valley, and whereby objects cast from opposite sides of said plates have lugs with convex projections and have valleys with ridges in their side surfaces which projections and ridges engage each other when the objects are matched.
Claim 3
Independent Claim
288 words
A method of producing pattern plates by the machining of blank plates having generally flat and parallel opposing faces each face of which has an imaginary center line formed by the intersection with said faces of an imaginary plane that is perpendicular to said faces, machining a valley in a first face of a first plate which valley has a cross section that is an isosceles trapezoid, machining a valley in the portion of the second face of the first plate as presented by rotation of the plate about a center line in the identical position from said center line as the valley in said first face and with an identical shape, repeating the machining steps in a number of plates, providing a passageway in each plate, which passageway extends from said valley to the opposite face of said plates, abutting the first face of a second plate with the second face of the first plate and with the center lines of the abutting faces in precise register, injecting a hardenable material through the passageways of said plates into the valleys of the abutting faces and bonding the cast material onto the plate which covers the respective valley, separating said plates, abutting the second face of the second plate with the first face of another plate and with the center lines of the abutting faces in precise register, injecting a hardenable material through the passageways of said plates into the valleys of the abutting faces and bonding the hardenable material onto the plate which covers the respective valley, and whereby objects cast from a first side of one of said plates have projections which precisely match the valleys of the second side of any other of said plates.
Claim 4
Independent Claim
288 words
A method of producing pattern plates by the machining of blank plates having generally flat and parallel opposing faces each face of which has an imaginary center line formed by the intersection with said faces of an imaginary plane that is perpendicular to said faces, machining a valley in a first face of a first plate which valley has a cross section that is an isosceles trapezoid, machining a valley in the portion of the second face of the first plate as presented by rotation of the plate about a center line in the identical position from said center line as the valley in said first face and with an identical shape, repeating the machining steps in a number of plates, providing a passageway in each plate, which passageway extends from said valley to the opposite face of said plates, abutting the first face of a second plate with the second face of the first plate and with the center lines of the abutting faces in precise register, injecting a hardenable material through the passageways of said plates into the valleys of the abutting faces and bonding the cast material onto the plate which covers the respective valley, separating said plates, abutting the second face of the second plate with the first face of another plate and with the center lines of the abutting faces in precise register, injecting a hardenable material through the passageways of said plates into the valleys of the abutting faces and bonding the hardenable material onto the plate which covers the respective valley, and whereby objects cast from a first side of one of said plates have projections which precisely match the valleys of the second side of any other of said plates.
Claim 5
Independent Claim
138 words
A method of producing a plurality of identical plates comprising: providing a blank plate having generally flat and parallel faces each face of which has an imaginary center line formed by the intersection with the face of an imaginary plane that is perpendicular to the faces, machining a pair of widely spaced apart round holes in precise spacing on said center line of said adjacent plate, opposite ends thereof machining a first valley in a first face of said first plate in a precise predetermined location from one of said holes, machining a second valley in said first face of said first plate in the same precise predetermined location from the other of said holes, and whereby duplicate plates can be produced by machining identical holes in another plate and machining valleys in precise locations from these holes.
Claim 6
Independent Claim
138 words
A method of producing a plurality of identical plates comprising: providing a blank plate having generally flat and parallel faces each face of which has an imaginary center line formed by the intersection with the face of an imaginary plane that is perpendicular to the faces, machining a pair of widely spaced apart round holes in precise spacing on said center line of said adjacent plate, opposite ends thereof machining a first valley in a first face of said first plate in a precise predetermined location from one of said holes, machining a second valley in said first face of said first plate in the same precise predetermined location from the other of said holes, and whereby duplicate plates can be produced by machining identical holes in another plate and machining valleys in precise locations from these holes.
Claim 7
Dependent Claim
203 words
The method of claim 3 including the steps of: providing a second plate generally corresponding to said first plate, machining a pair of widely spaced apart holes on the center line of a second face of the second plate identically spaced to those of said first plate, machining a valley in the second face of said second plate in said precise predetermined location from one of said holes as was said first valley, machining a valley in said second face in said precise predetermined location from the other of said holes as was said second valley, matching said second face with said first face of said first plate by placing tightly fitting pins through the holes in said plates as aligned so that the matching face of one plate has a valley cover area overlying the valley in the matching face of the other plate, providing a passageway communicating each valley or its cover area to an external plate surface, and injecting a hardenable material through said passageways into the valleys of the matched plates and hardening the material to the plate covering the valley, whereby objects cast from said second plate will precisely mate with said first face of said first plate.
Claim 8
Dependent Claim
35 words
The method of claim 4 wherein the sidewalls of said valleys are formed by side-to-side movement of a cutter as it traverses the length of the valleys to provide randomly spaced ridges and depressions therein
Claim 9
Dependent Claim
142 words
The method of claim 3 including the steps of: duplicating said steps to provide a plurality of said plates having identically machined first faces, matching the second face of one plate with said first face of another of said plates by placing tightly fitting pins through aligned holes in said plates so that the matching face of one plate has a valley cover area overlying the valley in the matching face of the other plate, providing a passageway communicating each valley or its cover area to an external plate surface, injecting a hardenable material through said passageways leading to the valleys of said other of said plates and bonding the hardenable material to the second face of said one of said plates, and whereby said second face of said first plate accurately mates with the first face of any of said plates.
Claim 10
Dependent Claim
107 words
The method of claim 3 including the steps of: causing said holes to extend through the plate, rotating said first plate about its center line to expose the opposite end of said holes therein, machining a valley in said second face in the precise predetermined location from said one of said holes as was said first valley, and machining another valley in said second face in the precise predetermined location from said other hole as was said second valley to provide identical configurations on opposite sides of the plate, and whereby objects cast from one side of the plate will fit the opposite side of the plate.
Claim 11
Dependent Claim
143 words
The method of claim 7 including the steps of: duplicating the machining operations in plates, providing passageways in each plate extending from said valleys to the opposite face of the plate in which the valleys are located, matching the first face of said first plate with the second face of another plate, placing tightly fitting pins in the aligned openings, injecting a hardenable material through said passageways into the valleys of the matching surfaces and hardening the material to the plates covering the valleys, matching the second face of the first plate with the first face of another plate, placing tightly fitting pins in the aligned openings, and injecting a hardenable material through said passageways leading to the valleys of the matching surfaces and hardening the material to the plates covering the valleys, whereby plates having identical first and second sides are produced.
Claim 12
Dependent Claim
35 words
The method of claim 8 wherein the sidewalls of said valleys are formed by side-to-side movement of a cutter as it traverses the length of the valleys to provide randomly spaced ridges and depressions therein.
Claim 13
Independent Claim
157 words
A method of producing a plurality of pattern plates having identical configuration of valleys therein comprising: providing a plurality of blank plates having first and second generally flat and parallel opposite faces, providing a pair of widely spaced holes between said first and second opposite faces of each plate with respective holes being adjacent respective ends of the plate. Machining a first valley in the first face of each plate in a predetermined location relative to one of said holes, machining a second valley in the first face of each plate in said predetermined location relative to the other of said opeinings, machining a third valley in the second face of each plate in said predetermined location relative to said one of said openings, and machining a fourth valley in the second face of each plate in said predetermined location from said other opening, and whereby a pattern plate is made whose both sides are precisely identical.
Claim 14
Independent Claim
157 words
A method of producing a plurality of pattern plates having identical configuration of valleys therein comprising: providing a plurality of blank plates having first and second generally flat and parallel opposite faces, providing a pair of widely spaced holes between said first and second opposite faces of each plate with respective holes being adjacent respective ends of the plate. Machining a first valley in the first face of each plate in a predetermined location relative to one of said holes, machining a second valley in the first face of each plate in said predetermined location relative to the other of said opeinings, machining a third valley in the second face of each plate in said predetermined location relative to said one of said openings, and machining a fourth valley in the second face of each plate in said predetermined location from said other opening, and whereby a pattern plate is made whose both sides are precisely identical.
Claim 15
Dependent Claim
120 words
The method of claim 10 comprising: abutting the first face of one plate against the second face of another of said plurality of plates so that the abutting face of one plate has a valley cover area overlying the valley in the abutting face of the other plate, providing a passageway communicating each valley or its cover area to an external plate surface, aligning said holes in said superimposed plates, and injecting a hardenable material into the valleys in said abutting surfaces through said passageways to provide projections on one plate which precisely fit into valleys of the other of said plates to be capable thereafter of accurately aligning any one of said plates with any other of said plates.
Claim 16
Dependent Claim
88 words
The method of claim 11 wherein: said hardenable material shrinks by a predetermined amount when it hardens in a valley, and said machining steps provide said side surfaces of said valleys with randomly spaced surface irregularities therein comprising projections and depressions, the projections of which have a height that is greater than said amount of shrinkage of said hardenable material; and whereby an interference fit occurs between a projection and a valley of superimposed plates other than the plate whose valley was used to form the projection initially.
Claim 17
Independent Claim
255 words
A method of producing cast lugs of a material which shrinks during hardening and which provides an interference fit between parts reproduced therefrom, comprising: providing first, second, third and fourth plate areas having abuttable surfaces, machining a valley in the first plate area which valley has spaced apart ridges in its side surfaces which have a height slightly greater than the amount of shrinkage of the hardenable material during hardening, abutting said first and second plate areas, providing one of said first and second plate areas with a passageway extending between said valley or the overlying surface of said second plate area to an external surface, injecting a hardenable material through said passageway into said valley to form a first lug, machining a valley in the third plate area of the same outside dimensions as said valley of said first plate area and which valley has spaced apart ridges in its side surfaces which have a height comparable to those of said first mentioned valley but with a different orientation, abutting said third and fourth plate areas, one of said third and fourth areas having a passageway extending between said valley or the overlying surface of said fourth plate area to an external surface, injecting a hardenable material through said passageway into said valley to form a second lug, and whereby said second lug has an interference fit with the ridges of the valley in said first plate area and said first lug has an interference fit with the ridges of said third plate area.
Claim 18
Independent Claim
255 words
A method of producing cast lugs of a material which shrinks during hardening and which provides an interference fit between parts reproduced therefrom, comprising: providing first, second, third and fourth plate areas having abuttable surfaces, machining a valley in the first plate area which valley has spaced apart ridges in its side surfaces which have a height slightly greater than the amount of shrinkage of the hardenable material during hardening, abutting said first and second plate areas, providing one of said first and second plate areas with a passageway extending between said valley or the overlying surface of said second plate area to an external surface, injecting a hardenable material through said passageway into said valley to form a first lug, machining a valley in the third plate area of the same outside dimensions as said valley of said first plate area and which valley has spaced apart ridges in its side surfaces which have a height comparable to those of said first mentioned valley but with a different orientation, abutting said third and fourth plate areas, one of said third and fourth areas having a passageway extending between said valley or the overlying surface of said fourth plate area to an external surface, injecting a hardenable material through said passageway into said valley to form a second lug, and whereby said second lug has an interference fit with the ridges of the valley in said first plate area and said first lug has an interference fit with the ridges of said third plate area.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |