US3586093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foundry squeeze mechanism
Assignee: Spo Inc
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Filing: 1968-09-19
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Granted: 1971-06-22
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Expires: 1988-09-19
Abstract
Abstract A foundry squeeze mechanism which includes a head having a plurality of cavities within which are positioned sleeve members. Rod members are positioned in the sleeve members and are normally held in a fixed position by an interference fit between the sleeve and rod members. One end of the rod members have feet for engaging sand in a foundry flask. Fluid passage means provide for the introduction of fluid pressure between the rod members and the sleeve members at the area of the interference fit and when so introduced the sleeve members are forced outwardly releasing the interference fits. Fluid pressure or other means on the other end of the rod members causes them to be extended. Seal means are provided on each side of the area of the interference fits and stop members are provided on the rod members to limit their extended movement.
Inventors
- 👤 Lester C Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:22
CPC Classifications
B; B22; B22C; B22C15/00; B22C15/10; B22C15/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
345 words
A foundry squeeze mechanism movable back and forth in a longitudinal direction and including in combination a squeeze machine head plate, a squeeze head having a plurality of cavities, a cylinder in each cavity having a generally cylindrically shaped opening which extends therethrough and which is generally parallel to the longitudinal direction of movement of the squeeze mechanism, a squeeze head cover secured to one side of said squeeze head and having a like member of generally cylindrically shaped and parallel openings in axial alignment with respective openings in said cylinders, said squeeze head cover being secured to said head plate, a rod residing in each of said cylinder openings and having first and second end portions and being movable between extended and retracted positions. Said first end portions of said rods being movable into and out of respective openings in said squeeze head cover, first hydraulic passageway means interconnecting said openings in said squeeze head cover in fluid-conducting relationship, first hydraulic fluid pressure source means connected to said first hydraulic passageway means, spaced seal means surrounding spaced portions of said rod, each said rod residing in its respective cylinder opening and making an interference fit therewith between said spaced seal means, hydraulic fluid port means at the juncture of each of said rods and the cylinder opening within which it resides and between said spaced seal means, second hydraulic passageway means interconnecting all said hydraulic fluid port means in fluid conducting relationship, second hydraulic fluid pressure source means connected to said second hydraulic passageway means, application of hydraulic fluid pressure at said juncture through said port means causing the wall of each of said cylinders to expand outwardly into its respective cavity releasing the interference fit between the rod and the cylinder opening and the application of hydraulic fluid pressure to said openings in said squeeze head cover Causing said rods to be extended, peen feet attached to said second end portions of said rods for engaging sand in a foundry flask, and stop means on said rods for limiting the extended movement thereof.
Claim 2
Dependent Claim
345 words
A foundry squeeze mechanism movable back and forth in a longitudinal direction and including in combination a squeeze machine head plate, a squeeze head having a plurality of cavities, a cylinder in each cavity having a generally cylindrically shaped opening which extends therethrough and which is generally parallel to the longitudinal direction of movement of the squeeze mechanism, a squeeze head cover secured to one side of said squeeze head and having a like member of generally cylindrically shaped and parallel openings in axial alignment with respective openings in said cylinders, said squeeze head cover being secured to said head plate, a rod residing in each of said cylinder openings and having first and second end portions and being movable between extended and retracted positions. Said first end portions of said rods being movable into and out of respective openings in said squeeze head cover, first hydraulic passageway means interconnecting said openings in said squeeze head cover in fluid-conducting relationship, first hydraulic fluid pressure source means connected to said first hydraulic passageway means, spaced seal means surrounding spaced portions of said rod, each said rod residing in its respective cylinder opening and making an interference fit therewith between said spaced seal means, hydraulic fluid port means at the juncture of each of said rods and the cylinder opening within which it resides and between said spaced seal means, second hydraulic passageway means interconnecting all said hydraulic fluid port means in fluid conducting relationship, second hydraulic fluid pressure source means connected to said second hydraulic passageway means, application of hydraulic fluid pressure at said juncture through said port means causing the wall of each of said cylinders to expand outwardly into its respective cavity releasing the interference fit between the rod and the cylinder opening and the application of hydraulic fluid pressure to said openings in said squeeze head cover Causing said rods to be extended, peen feet attached to said second end portions of said rods for engaging sand in a foundry flask, and stop means on said rods for limiting the extended movement thereof.
Claim 3
Dependent Claim
247 words
A foundry squeeze mechanism including in combination a squeeze head having a plurality of cavities therein, sleeve members positioned in said cavities and providing a space between the outer surfaces thereof and the walls of said cavities, a rod member positioned in each of said sleeve members and having first and second end portions and an intermediate portion therebetween, said first end portions of said rod members communicating with one end of said cavities, peen feet attached to said second end portions of said rod members and adapted to engage sand in a foundry flask, said intermediate portions of said rod members residing in said sleeve members and normally making an interference fit therewith to mechanically lock said rod members in position, first hydraulic fluid pressure means in communication with said one end of each of said cavities and said first end portions of said rod members, second hydraulic fluid pressure means in communication with each of said sleeve members at said intermediate portions of said rod members, seal means at the outer surface of said rod members on either side of where said second hydraulic fluid means communicates with sail sleeve members, introduction of fluid pressure into said second hydraulic fluid pressure means causing said sleeve members to expand outwardly slightly into said cavities to release the mechanical lock on said rod members and introduction of fluid pressure into said first hydraulic fluid pressure means causing said rod members to be extended from said sleeve members.
Claim 4
Dependent Claim
247 words
A foundry squeeze mechanism including in combination a squeeze head having a plurality of cavities therein, sleeve members positioned in said cavities and providing a space between the outer surfaces thereof and the walls of said cavities, a rod member positioned in each of said sleeve members and having first and second end portions and an intermediate portion therebetween, said first end portions of said rod members communicating with one end of said cavities, peen feet attached to said second end portions of said rod members and adapted to engage sand in a foundry flask, said intermediate portions of said rod members residing in said sleeve members and normally making an interference fit therewith to mechanically lock said rod members in position, first hydraulic fluid pressure means in communication with said one end of each of said cavities and said first end portions of said rod members, second hydraulic fluid pressure means in communication with each of said sleeve members at said intermediate portions of said rod members, seal means at the outer surface of said rod members on either side of where said second hydraulic fluid means communicates with sail sleeve members, introduction of fluid pressure into said second hydraulic fluid pressure means causing said sleeve members to expand outwardly slightly into said cavities to release the mechanical lock on said rod members and introduction of fluid pressure into said first hydraulic fluid pressure means causing said rod members to be extended from said sleeve members.
Claim 5
Dependent Claim
231 words
A foundry squeeze mechanism including in combination a squeeze head having a plurality of cavities therein, sleeve members positioned in said cavities and providing a space between the outer surfaces thereof and the walls of said cavities, a rod member positioned in each of said sleeve members and having first and second end portions and an intermediate portion therebetween, said first end portions of said rod members communicating with one end of said cavities, peen feet attached to said second end portions of said rod members and adapted to engage sand in a foundry flask, said intermediate portions of said rod members residing in said sleeve members and normally making an interference fit therewith to mechanically lock said rod members in position, force means acting on said first end portions of said rod members tending to extend the same, hydraulic fluid pressure means in communication with each of said sleeve members at said intermediate portions of said rod members, seal means at the interface of the outer surface of said rod members on either side of where said hydraulic fluid means communicates with said sleeve members, introduction of fluid pressure into said hydraulic fluid pressure means causing said sleeve members to expend outwardly slightly into said cavities to release the mechanical lock on said rod members and said force means causing said rod members to be extended from said sleeve members.
Claim 6
Dependent Claim
231 words
A foundry squeeze mechanism including in combination a squeeze head having a plurality of cavities therein, sleeve members positioned in said cavities and providing a space between the outer surfaces thereof and the walls of said cavities, a rod member positioned in each of said sleeve members and having first and second end portions and an intermediate portion therebetween, said first end portions of said rod members communicating with one end of said cavities, peen feet attached to said second end portions of said rod members and adapted to engage sand in a foundry flask, said intermediate portions of said rod members residing in said sleeve members and normally making an interference fit therewith to mechanically lock said rod members in position, force means acting on said first end portions of said rod members tending to extend the same, hydraulic fluid pressure means in communication with each of said sleeve members at said intermediate portions of said rod members, seal means at the interface of the outer surface of said rod members on either side of where said hydraulic fluid means communicates with said sleeve members, introduction of fluid pressure into said hydraulic fluid pressure means causing said sleeve members to expend outwardly slightly into said cavities to release the mechanical lock on said rod members and said force means causing said rod members to be extended from said sleeve members.
Claim 7
Dependent Claim
195 words
A foundry squeeze mechanism including in combination a head, a plurality of sleeve members carried by said head, rod members located within each of said sleeve members, means carried by one end of said rod members for engaging sand or the like, each said sleeve member having first and second axially spaced portions, first and second seal means at said first and second axially spaced portions to prevent fluid pressure leakage from between said sleeve member and said rod at said first and second axially spaced portions, sail sleeve member and said rod normally making an interference fit between said first and second axially spaced portions thereby preventing relative axial movement between said sleeve member and said rod, fluid passageway means communicating with the juncture of said rod member and said sleeve member between said first And second axially spaced portions, means for applying fluid pressure to said fluid passageway means to cause said sleeve member to expand between said first and second axially spaced portions releasing said interference fit, and means for exerting a force on said rod member to axially extend the same from said sleeve member when said interference fit is released.
Claim 8
Dependent Claim
195 words
A foundry squeeze mechanism including in combination a head, a plurality of sleeve members carried by said head, rod members located within each of said sleeve members, means carried by one end of said rod members for engaging sand or the like, each said sleeve member having first and second axially spaced portions, first and second seal means at said first and second axially spaced portions to prevent fluid pressure leakage from between said sleeve member and said rod at said first and second axially spaced portions, sail sleeve member and said rod normally making an interference fit between said first and second axially spaced portions thereby preventing relative axial movement between said sleeve member and said rod, fluid passageway means communicating with the juncture of said rod member and said sleeve member between said first And second axially spaced portions, means for applying fluid pressure to said fluid passageway means to cause said sleeve member to expand between said first and second axially spaced portions releasing said interference fit, and means for exerting a force on said rod member to axially extend the same from said sleeve member when said interference fit is released.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |