US5097864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable flow poppet valve for injection molding
Assignee: Glycon Corp
•
Filing: 1991-04-01
•
Granted: 1992-03-24
•
Expires: 2011-04-01
Abstract
Abstract A check valve for use in controlling the flow of thermoplastic material in an injection molding apparatus includes a valve body having an axially extending chamber formed therein with an inlet opening and an outlet opening through which the material can flow. An poppet is slidably movable in the chamber between a valve closed position and a selected valve open position. The poppet has an inlet end with a conical shape and the chamber has a complementary taper portion adjacent the inlet opening, the inlet end and the taper portion sealingly cooperating for preventing flow of material through said chamber when said poppet is in the valve closed position. An adjusting ring is positioned in the chamber for selective movement between a minimum open position and a maximum open position, the adjusting ring being externally threaded for threadably engaging an internal thread formed in the chamber. The poppet has a plurality of radially extending tabs formed thereon for abutting the adjusting ring when the poppet is in the selected valve open position whereby the volume of flow of material through the chamber is porportional to the position of the adjusting ring in the chamber. The poppet also has a plurality of axially extending grooves formed therein for permitting the flow of material from the inlet end of the poppet to an opposite end of the poppet and out the outlet end of the chamber.
Inventors
- 👤 Jeffrey A. Myers
- 👤 Jeffrey A. Kuhman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:14
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/46; B29C45/47; B29C45/50; B29C45/52; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/7913
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
160 words
A check valve for use in controlling the flow of thermoplastic material in an injection molding apparatus comprising: a valve body having an axially extending chamber formed therein, said chamber having an inlet opening and an outlet opening and an internal thread extending inwardly from said outlet opening; a poppet slidably movable in said chamber between a valve closed position and a selected valve open position, said poppet having an inlet end sealingly cooperating with said inlet opening for preventing flow of material through said chamber when said poppet is in the valve closed position; and an adjusting ring positioned in said chamber and being externally threaded for engaging said chamber internal thread for selective movement between a minimum open position and a maximum open position, said poppet abutting said adjusting ring in the selected valve open position whereby the volume of flow of material through said chamber is proportional to the position of said adjusting ring in said chamber.
Claim 2
Dependent Claim
160 words
A check valve for use in controlling the flow of thermoplastic material in an injection molding apparatus comprising: a valve body having an axially extending chamber formed therein, said chamber having an inlet opening and an outlet opening and an internal thread extending inwardly from said outlet opening; a poppet slidably movable in said chamber between a valve closed position and a selected valve open position, said poppet having an inlet end sealingly cooperating with said inlet opening for preventing flow of material through said chamber when said poppet is in the valve closed position; and an adjusting ring positioned in said chamber and being externally threaded for engaging said chamber internal thread for selective movement between a minimum open position and a maximum open position, said poppet abutting said adjusting ring in the selected valve open position whereby the volume of flow of material through said chamber is proportional to the position of said adjusting ring in said chamber.
Claim 3
Dependent Claim
25 words
The valve according to claim 1 wherein said poppet inlet end has a conical shape and said valve body chamber has a complementary taper portion.
Claim 4
Dependent Claim
22 words
The valve according to claim 1 wherein said adjusting means includes means for rotating said adjusting means relative to said valve body.
Claim 5
Dependent Claim
33 words
The valve according to claim 3 wherein said means for rotating includes a pair of diametrically opposed axially extending apertures formed in an end of said adjusting ring for engagement by a wrench.
Claim 6
Dependent Claim
33 words
The valve according to claim 3 wherein said means for rotating includes a pair of diametrically opposed flats formed on an exterior surface end of said adjusting ring for engagement by a wrench.
Claim 7
Dependent Claim
46 words
The valve according to claim 1 wherein said poppet has at least one axially extending groove formed therein for permitting the flow of material from said inlet end of said poppet to an opposite end of said poppet and out said outlet end of said chamber.
Claim 8
Dependent Claim
33 words
The valve according to claim 1 wherein said poppet has at least one radially extending tab formed thereon for abutting said adjusting ring when said poppet is in the selected valve open position.
Claim 9
Dependent Claim
165 words
A check valve for use in controlling the flow of thermoplastic material in an injection molding apparatus comprising: a valve body having an axially extending chamber formed therein, said chamber having an inlet opening and an outlet opening, said chamber having an internal thread extending inwardly from said outlet opening; a poppet slidably movable in said chamber between a valve closed position and a selected valve open position, said poppet having an inlet end sealingly cooperating with said inlet opening for preventing flow of material through said chamber when said poppet is in the valve closed position; and an adjusting ring positioned in said chamber for selective movement between a minimum open position and a maximum open position, said adjusting ring being externally threaded for threadably engaging said chamber internal thread, said poppet abutting said adjusting ring in the selected valve open position whereby the volume of flow of material through said chamber is proportional to the position of said adjusting ring in said chamber.
Claim 10
Dependent Claim
165 words
A check valve for use in controlling the flow of thermoplastic material in an injection molding apparatus comprising: a valve body having an axially extending chamber formed therein, said chamber having an inlet opening and an outlet opening, said chamber having an internal thread extending inwardly from said outlet opening; a poppet slidably movable in said chamber between a valve closed position and a selected valve open position, said poppet having an inlet end sealingly cooperating with said inlet opening for preventing flow of material through said chamber when said poppet is in the valve closed position; and an adjusting ring positioned in said chamber for selective movement between a minimum open position and a maximum open position, said adjusting ring being externally threaded for threadably engaging said chamber internal thread, said poppet abutting said adjusting ring in the selected valve open position whereby the volume of flow of material through said chamber is proportional to the position of said adjusting ring in said chamber.
Claim 11
Dependent Claim
25 words
The valve according to claim 8 wherein said poppet inlet end has a conical shape and said valve body chamber has a complementary taper portion.
Claim 12
Dependent Claim
46 words
The valve according to claim 8 wherein said poppet has a plurality of axially extending grooves formed therein for permitting the flow of material from said inlet end of said poppet to an opposite end of said poppet and out said outlet end of said chamber.
Claim 13
Dependent Claim
33 words
The valve according to claim 8 wherein said poppet has at least one radially extending tab formed thereon for abutting said adjusting ring when said poppet is in the selected valve open position.
Claim 14
Dependent Claim
252 words
A check valve for use in controlling the flow of thermoplastic material in an injection molding apparatus comprising: a valve body having an axially extending chamber formed therein, said chamber having an inlet opening and an outlet opening, said chamber having an internal thread extending inwardly from said outlet opening; a poppet slidably movable in said chamber between a valve closed position and a selected valve open position, said poppet having an inlet end with a conical shape and said valve body chamber having a complementary taper portion adjacent said inlet opening, said inlet end and said taper portion sealingly cooperating for preventing flow of material through said chamber when said poppet is in the valve closed position; and an adjusting ring positioned in said chamber for selective movement between a minimum open position and a maximum open position, said adjusting ring being externally threaded for threadably engaging said chamber internal thread, said poppet abutting said adjusting ring in the selected valve open position whereby the volume of flow of material through said chamber is proportional to the position of said adjusting ring in said chamber, said poppet having a plurality of axially extending grooves formed therein for permitting the flow of material from said inlet end of said poppet to an opposite end of said poppet and out said outlet end of said chamber, and said poppet having a plurality of radially extending tabs formed thereon for abutting said adjusting ring when said poppet is in the selected valve open position.
Claim 15
Dependent Claim
252 words
A check valve for use in controlling the flow of thermoplastic material in an injection molding apparatus comprising: a valve body having an axially extending chamber formed therein, said chamber having an inlet opening and an outlet opening, said chamber having an internal thread extending inwardly from said outlet opening; a poppet slidably movable in said chamber between a valve closed position and a selected valve open position, said poppet having an inlet end with a conical shape and said valve body chamber having a complementary taper portion adjacent said inlet opening, said inlet end and said taper portion sealingly cooperating for preventing flow of material through said chamber when said poppet is in the valve closed position; and an adjusting ring positioned in said chamber for selective movement between a minimum open position and a maximum open position, said adjusting ring being externally threaded for threadably engaging said chamber internal thread, said poppet abutting said adjusting ring in the selected valve open position whereby the volume of flow of material through said chamber is proportional to the position of said adjusting ring in said chamber, said poppet having a plurality of axially extending grooves formed therein for permitting the flow of material from said inlet end of said poppet to an opposite end of said poppet and out said outlet end of said chamber, and said poppet having a plurality of radially extending tabs formed thereon for abutting said adjusting ring when said poppet is in the selected valve open position.
References Cited (Backward Citations)
US1029931A
Cited
US1978730A
Cited
US3438393A
Cited
US3590439A
Cited
US3744751A
Cited
US4380422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-24 | 1995-09-23 | 1996-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-24 | 1999-09-23 | 2000-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-24 | 2003-09-23 | 2004-03-24 | $7700.00 | Window Closed / Lapsed |