US3556469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gate valve for hopper cars or the like
Assignee: CONSTANT FLOW CO
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Filing: 1969-06-05
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Granted: 1971-01-19
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Expires: 1989-06-05
Abstract
Abstract A gate valve for a material storage container such as a railway hopper car which has a discharge opening formed in the bottom area thereof. A pyramid shaped valve member is vertically movably mounted in the hopper car and has a lower end adapted to close the discharge opening of the hopper car when it is moved to its lowermost position. A vertically disposed shaft is rotatably secured to the upper end of the valve member and threadably extends upwardly through a support member and through the upper end of the car whereby rotation of the shaft will cause the valve member to be vertically moved. A modified form of the invention employs a hydraulic cylinder means for raising and lowering the valve member. A guide means is also provided to prevent undesirable lateral and rotational movement of the valve member with respect to the discharge opening.
Inventors
- 👤 Lloyd D Barger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:51
CPC Classifications
B; B61; B61D; B61D7/00; B61D7/14; B61D7/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
84 words
A gate valve for vertical disposed material storage container having upper and lower ends and a discharge opening formed in the lower end thereof, comprising: a valve member of substantially pyramidal shape vertically movably mounted in the storage container, said valve member having a lower end portion adapted to close the discharge opening when it is in its lowered position with respect to the storage container; and drive means connected to said valve member for vertically moving it with respect to said storage container.
Claim 2
Dependent Claim
84 words
A gate valve for vertical disposed material storage container having upper and lower ends and a discharge opening formed in the lower end thereof, comprising: a valve member of substantially pyramidal shape vertically movably mounted in the storage container, said valve member having a lower end portion adapted to close the discharge opening when it is in its lowered position with respect to the storage container; and drive means connected to said valve member for vertically moving it with respect to said storage container.
Claim 3
Dependent Claim
66 words
The structure of claim 1 wherein said drive means is a vertically disposed hydraulic cylinder means positioned inside of said valve member and being connnected at its upper end to said valve member, a support member secured to the storage container at the lower end thereof and extending across the discharge opening, said hydraulic cylinder means being connected at its lower end to said support member.
Claim 4
Dependent Claim
39 words
The structure of claim 2 wherein said support member has guide means thereon and extending upwardly therefrom adapted to engage said valve member to prevent lateral and rotational displacement of the valve member with respect to the discharge opening.
Claim 5
Dependent Claim
59 words
The structure of claim 1 wherein said drive means is a vertically disposed shaft rotatably connected at its lower end to the upper end of said valve member, a support member operatively secured to the storage container and threadably receiving said shaft extending therethrough, the upper end of said shaft extending above the upper end of the storage container.
Claim 6
Dependent Claim
45 words
The structure of claim 4 wherein said shaft has a hand wheel connected to its upper end and wherein the storage container has a pivotal hatch cover adapted to extend over and enclose the hand wheel when said valve member is closing the discharge opening.
Claim 7
Dependent Claim
53 words
The structure of claim 4 wherein a support member is secured to the storage container at the lower end thereof and extends across the discharge opening, said valve member and said support member having guide means thereon for preventing lateral and rotational displacement of the valve member with respect to the discharge opening.
Claim 8
Dependent Claim
33 words
The structure of claim 4 wherein said shaft has a ball means at its lower end, said ball means being rotatably received by a pocket at the upper end of said valve member.
Claim 9
Dependent Claim
141 words
A gate valve for a vertically disposed material storage container having upper and lower ends and a discharge opening formed in the lower end thereof, comprising: a valve member vertically movably mounted in the storage container, said valve member having a lower end portion adapted to close the discharge opening when it is in its lowered position with respect to the storage container; drive means connected to said valve member for vertically moving it with respect to said storage container; and said drive means being a vertically disposed hydraulic cylinder means positioned inside of said valve member and being connected at its upper end to said valve member, a support member secured to the storage container at the lower end thereof and extending across the discharge opening, said hydraulic cylinder means being connected at its lower end to said support member.
Claim 10
Dependent Claim
141 words
A gate valve for a vertically disposed material storage container having upper and lower ends and a discharge opening formed in the lower end thereof, comprising: a valve member vertically movably mounted in the storage container, said valve member having a lower end portion adapted to close the discharge opening when it is in its lowered position with respect to the storage container; drive means connected to said valve member for vertically moving it with respect to said storage container; and said drive means being a vertically disposed hydraulic cylinder means positioned inside of said valve member and being connected at its upper end to said valve member, a support member secured to the storage container at the lower end thereof and extending across the discharge opening, said hydraulic cylinder means being connected at its lower end to said support member.
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |