US3851700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of inoculating nodular cast iron
Assignee: Motors Liquidation Co
•
Filing: 1973-08-20
•
Granted: 1974-12-03
•
Expires: 1993-08-20
Abstract
Abstract An improved method of inoculating nodular cast iron to obtain uniform and thorough inoculation of nodular iron simultaneously with the casting thereof. A preformed inoculant agent body in the shape of a ball is dropped into a stationary position at the base of the pouring basin of the gating of the mold and the molten metal is poured over the ball whereby it flows over and around the ball and into the mold cavity through passages provided in the gating wall about the ball. The molten metal uniformly dissolves the ball shaped inoculant agent as it flows about it and is uniformly inoculated thereby just prior to the casting thereof.
Inventors
- 👤 D Mcafee
- 👤 T Newcomb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:21
CPC Classifications
B; B22; B22D; B22D1/00; B22D1/007
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
115 words
A mold for inoculating molten nodular cast iron and immediately casting articles therefrom comprising a mold including a mold cavity and a gating system communicating therewith, said gating system including an open bottom pouring basin with the said bottom merging into a downwardly extending sprue passage of smaller cross-sectional dimensions at a throat-like region thereof, a ball shaped inoculant insert having a greater dimension than said passage disposed in said region, said region having a plurality of spaced radially inwardly extending projections supporting said ball insert and forming a plurality of passageways therebetween for conducting the molten metal from said pouring basin about said ball insert, to said passage and thence to said mold cavity.
Claim 2
Dependent Claim
115 words
A mold for inoculating molten nodular cast iron and immediately casting articles therefrom comprising a mold including a mold cavity and a gating system communicating therewith, said gating system including an open bottom pouring basin with the said bottom merging into a downwardly extending sprue passage of smaller cross-sectional dimensions at a throat-like region thereof, a ball shaped inoculant insert having a greater dimension than said passage disposed in said region, said region having a plurality of spaced radially inwardly extending projections supporting said ball insert and forming a plurality of passageways therebetween for conducting the molten metal from said pouring basin about said ball insert, to said passage and thence to said mold cavity.
Claim 3
Dependent Claim
115 words
A mold for inoculating molten nodular cast iron and immediately casting articles therefrom comprising a mold including a mold cavity and a gating system communicating therewith, said gating system including an open bottom pouring basin with the said bottom merging into a downwardly extending passage of smaller dimension at a throat-like region thereof, a ball shaped inoculant insert having a greater diameter than said passage disposed in said region, said region having a plurality of vertically elongated spaced radially inwardly extending projections supporting said ball insert and forming a plurality of passageways therebetween for conducting the molten metal from said pouring basin about said ball insert, to said passage and thence to said mold cavity.
Claim 4
Dependent Claim
115 words
A mold for inoculating molten nodular cast iron and immediately casting articles therefrom comprising a mold including a mold cavity and a gating system communicating therewith, said gating system including an open bottom pouring basin with the said bottom merging into a downwardly extending passage of smaller dimension at a throat-like region thereof, a ball shaped inoculant insert having a greater diameter than said passage disposed in said region, said region having a plurality of vertically elongated spaced radially inwardly extending projections supporting said ball insert and forming a plurality of passageways therebetween for conducting the molten metal from said pouring basin about said ball insert, to said passage and thence to said mold cavity.
Claim 5
Dependent Claim
118 words
A mold for inoculating molten nodular cast iron and immediately casting articles therefrom comprising a mold including a mold cavity and a gating system communicating therewith, said gating system including an open bottom pouring basin with the said bottom merging into a downwardly extending passage of smaller dimension at a throat-like region thereof, a ball shaped inoculant insert supported in said region, said region having a cross-sectional dimension which is smaller than the dimenSion of said insert forming a seat for supporting said insert, said region having a plurality of spaced passageways in the wall thereof for conducting the molten metal from said pouring basin about said ball insert, to said passage and thence to said mold cavity.
Claim 6
Dependent Claim
118 words
A mold for inoculating molten nodular cast iron and immediately casting articles therefrom comprising a mold including a mold cavity and a gating system communicating therewith, said gating system including an open bottom pouring basin with the said bottom merging into a downwardly extending passage of smaller dimension at a throat-like region thereof, a ball shaped inoculant insert supported in said region, said region having a cross-sectional dimension which is smaller than the dimenSion of said insert forming a seat for supporting said insert, said region having a plurality of spaced passageways in the wall thereof for conducting the molten metal from said pouring basin about said ball insert, to said passage and thence to said mold cavity.
Claim 7
Dependent Claim
119 words
A mold for inoculating molten nodular cast iron and immediately casting articles therefrom comprising a mold including a mold cavity and a gating system communicating therewith, said gating system including a cup-like open bottom pouring basin with the said bottom merging into a downwardly extending passage of smaller dimension at a funnel shaped region thereof, a spherical inoculant insert supported in said region, said region having a cross-sectional diameter which is smaller than the diameter of said insert forming a seat for supporting said insert, said region having a plurality of spaced passageways in the wall thereof for conducting the molten metal from said pouring basin about said ball insert, to said passage and thence to said mold cavity.
Claim 8
Dependent Claim
119 words
A mold for inoculating molten nodular cast iron and immediately casting articles therefrom comprising a mold including a mold cavity and a gating system communicating therewith, said gating system including a cup-like open bottom pouring basin with the said bottom merging into a downwardly extending passage of smaller dimension at a funnel shaped region thereof, a spherical inoculant insert supported in said region, said region having a cross-sectional diameter which is smaller than the diameter of said insert forming a seat for supporting said insert, said region having a plurality of spaced passageways in the wall thereof for conducting the molten metal from said pouring basin about said ball insert, to said passage and thence to said mold cavity.
Claim 9
Independent Claim
149 words
A method of inoculating molten nodular cast iron while casting articles therefrom comprising providing a mold including a mold cavity and gating system communicating therewith, said gating system including an open bottom pouring basin with the said bottom merging into a downwardly extending passage of smaller cross-sectional dimension at a throat-like region thereof, dropping a ball shaped inoculant insert having a greater cross-sectional dimension than said passage into said region, supporting said ball insert within said region by means of projections extending radially inwardly into said region, introducing said molten iron into said pouring basin and causing said molten iron to flow over and about said ball insert through the passageways formed between said projections, said ball insert being uniformly dissolved by the molten metal flowing therearound and said metal being inoculated thereby and causing said molten metal to flow into said passage and thence into said mold cavity.
Claim 10
Independent Claim
149 words
A method of inoculating molten nodular cast iron while casting articles therefrom comprising providing a mold including a mold cavity and gating system communicating therewith, said gating system including an open bottom pouring basin with the said bottom merging into a downwardly extending passage of smaller cross-sectional dimension at a throat-like region thereof, dropping a ball shaped inoculant insert having a greater cross-sectional dimension than said passage into said region, supporting said ball insert within said region by means of projections extending radially inwardly into said region, introducing said molten iron into said pouring basin and causing said molten iron to flow over and about said ball insert through the passageways formed between said projections, said ball insert being uniformly dissolved by the molten metal flowing therearound and said metal being inoculated thereby and causing said molten metal to flow into said passage and thence into said mold cavity.
Claim 11
Independent Claim
156 words
A method of inoculating molten nodular cast iron while casting articles therefrom comprising providing a mold including a mold cavity and gating system communicating therewith, said gating system including a cup-like open bottom pouring basin with the said bottom merging into a downwardly extending passage of smaller cross-sectional dimension at a throat-like region thereof, dropping a spherical ball inoculant insert having a greater cross-sectional dimension than said passage into said region, supporting said ball insert wedgingly within said region by means of vertically elongated projections extending radially inwardly into said region forming a funnel-like space therein for receiving said ball insert, introducing said molten iron into said pouring basin and causing said molten iron to flow over and about said ball insert, through the passageways formed between said projections to said passage and thence into said mold cavity, said ball insert being uniformly dissolved by the molten metal flowing therearound and said metal being inoculated thereby.
Claim 12
Independent Claim
156 words
A method of inoculating molten nodular cast iron while casting articles therefrom comprising providing a mold including a mold cavity and gating system communicating therewith, said gating system including a cup-like open bottom pouring basin with the said bottom merging into a downwardly extending passage of smaller cross-sectional dimension at a throat-like region thereof, dropping a spherical ball inoculant insert having a greater cross-sectional dimension than said passage into said region, supporting said ball insert wedgingly within said region by means of vertically elongated projections extending radially inwardly into said region forming a funnel-like space therein for receiving said ball insert, introducing said molten iron into said pouring basin and causing said molten iron to flow over and about said ball insert, through the passageways formed between said projections to said passage and thence into said mold cavity, said ball insert being uniformly dissolved by the molten metal flowing therearound and said metal being inoculated thereby.
Claim 13
Dependent Claim
103 words
A mold for inoculating molten nodular cast iron and immediately casting articles therefrom comprising a mold including a mold cavity and a gating system communicating therewith, said gating system including a bottom pour basin with the said bottom merging into a passage of smaller cross-sectional dimensions leading to said mold cavity, a ball shaped inoculant insert disposed in a region of said passage, said region having a plurality of spaced radially inwardly extending projections supporting said ball insert and forming a plurality of passageways therebetween for conducting the molten metal from said basin about said ball insert and thence to said mold cavity.
Claim 14
Dependent Claim
103 words
A mold for inoculating molten nodular cast iron and immediately casting articles therefrom comprising a mold including a mold cavity and a gating system communicating therewith, said gating system including a bottom pour basin with the said bottom merging into a passage of smaller cross-sectional dimensions leading to said mold cavity, a ball shaped inoculant insert disposed in a region of said passage, said region having a plurality of spaced radially inwardly extending projections supporting said ball insert and forming a plurality of passageways therebetween for conducting the molten metal from said basin about said ball insert and thence to said mold cavity.
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) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |