US3806084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improved valve dispensing apparatus
Assignee: SCM Metal Products Inc
•
Filing: 1971-06-21
•
Granted: 1974-04-23
•
Expires: 1991-06-21
Abstract
Abstract An improved valve dispensing apparatus comprising a housing defining a tubular chamber communicating with a material inlet and exit port and a unitary valve member defining a passageway axially sealingly slideable in the chamber is set forth. Also a process for dispensing of material having ductile particulates therein from such apparatus is disclosed. In the process, the valve member is moved to a position establishing registry of the passageway with the inlet and exit port for providing a pathway for flow of material. On movement of the valve member to establish registry, a wiping action is effected on the interior of the chamber while simultaneously sealing the annular space between the chamber and valve member, thereby causing dispensing of the material substantially completely through the passageway and suppressing accumulation of ductile particulates in the annular space. Return of the valve member to its original position again causes a wiping action on the chamber wall and additionally causes a suction force on undispensed material, thereby preventing dripping.
Inventors
- 👤 R Seese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:42
CPC Classifications
F; F16; F16K; F16K23/00; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86759; Y10T137/86791; Y10T137/86799
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
348 words
A valve for dispensing of liquid or semi-fluid material which comprises: a housing defining a tubular chamber communicating with an inlet port for receiving material and an exit port for dispensing of material therefrom, said chamber having a rear and front sections, and a sleeve therebetween, and said chamber communicating with an air passage and a vent therefor; a unitary cylindrical valve member sealingly axially slideable into said sleeve between a first front position and a second rear position in said tubular chamber, said member defining an internal passageway having an aft end for receiving material from the inlet port and a fore end for dispensing of material to the exit port, said aft end being a lateral inlet to said internal passageway, said lateral inlet being bounded by a rear first shoulder section and a front second shoulder section, said shoulder sections being sealingly slideable in said chamber, said valve member when in said first front position establishing registry of said passageway with said inlet port and said exit port, thereby providing a pathway for flow of material from said inlet port to said exit port, said valve member when in said second rear position establishing nonalignment between said passageway and said inlet and exit ports, said valve member sealingly blocking the flow of material between said inlet port and said aft end of said passageway while in said second rear position; said air passage being situated to the rear of said first shoulder section, and said air vent forward of said second shoulder when said valve is in said second rear position; means for urging said unitary valve member from said second rear position to said first front position establishing registry of said passageway with said inlet and exit ports for dispensing of material; and means for urging said unitary valve member from said first front position to said second rear position for terminating flow of material from said exit port and for causing said valve member to exert a suction force on undispensed material in said exit port, thereby preventing dripping from said exit port.
Claim 2
Dependent Claim
348 words
A valve for dispensing of liquid or semi-fluid material which comprises: a housing defining a tubular chamber communicating with an inlet port for receiving material and an exit port for dispensing of material therefrom, said chamber having a rear and front sections, and a sleeve therebetween, and said chamber communicating with an air passage and a vent therefor; a unitary cylindrical valve member sealingly axially slideable into said sleeve between a first front position and a second rear position in said tubular chamber, said member defining an internal passageway having an aft end for receiving material from the inlet port and a fore end for dispensing of material to the exit port, said aft end being a lateral inlet to said internal passageway, said lateral inlet being bounded by a rear first shoulder section and a front second shoulder section, said shoulder sections being sealingly slideable in said chamber, said valve member when in said first front position establishing registry of said passageway with said inlet port and said exit port, thereby providing a pathway for flow of material from said inlet port to said exit port, said valve member when in said second rear position establishing nonalignment between said passageway and said inlet and exit ports, said valve member sealingly blocking the flow of material between said inlet port and said aft end of said passageway while in said second rear position; said air passage being situated to the rear of said first shoulder section, and said air vent forward of said second shoulder when said valve is in said second rear position; means for urging said unitary valve member from said second rear position to said first front position establishing registry of said passageway with said inlet and exit ports for dispensing of material; and means for urging said unitary valve member from said first front position to said second rear position for terminating flow of material from said exit port and for causing said valve member to exert a suction force on undispensed material in said exit port, thereby preventing dripping from said exit port.
Claim 3
Dependent Claim
22 words
The valve of claim 1, wherein said sleeve has a coefficient of static friction with steel of not greater than about 0.2.
Claim 4
Dependent Claim
40 words
The valve of claim 2, wherein said means for urging the valve from first to second position is a spring means and wherein said first and second shoulder sections on said valve member each supports at least one O-ring seal.
Claim 5
Dependent Claim
33 words
The valve of claim 2 wherein said inlet port is blocked by the unitary valve member in the second position by at least one O-ring seal on each side of the inlet port.
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) | 1977-04-22 | 1977-10-22 | 1978-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-22 | 1981-10-22 | 1982-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-22 | 1985-10-22 | 1986-04-23 | $7700.00 | Window Closed / Lapsed |