US3632174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic discharge arrangement for hoppers
Assignee: PULLMAN LEASING Co A DE CORP
•
Filing: 1970-09-15
•
Granted: 1972-01-04
•
Expires: 1990-09-15
Abstract
Abstract A hopper discharge arrangement includes a housing having a plurality of compartments and a material receiving trough therebeneath adapted to be connected to pneumatic conveying means. Each compartment is provided with a valve operable selectively to provide communication with the trough for selective discharge. Valve operating means includes a rotatable and slidable shaft including toggle linkage means in each compartment which is actuated by sliding or indexing movement of the shaft to provide for operative interengagement of an actuating element with said toggle linkage means.
Inventors
- 👤 Roy W Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:10
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/54; B65D90/62; B65D90/626; B65G; B65G53/00; B65G53/34; B65G53/40; B65G53/46
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
171 words
A pneumatic discharge arrangement for a hopper including a housing having opposed sloping walls converging into a longitudinal trough at their lower ends adapted to connect to pneumatic conveying means, said housing including laterally extending walls providing a plurality of compartments communicating with said trough, the improvement comprising: a valve plate in each compartment adapted to be moved from open to closed positions for regulating the discharge of material to said trough, means for moving said plate including a shaft rotatably supported on said housing and being longitudinally shiftable within said compartments, a linkage means within each compartment supported on said shaft to be actuated thereby, means pivotally connecting each said linkage means to each said valve plate means, means for rotating said shaft, an actuating element on said shaft within each compartment, and means for shifting said shaft longitudinally whereby said actuating means may be selectively engaged with at least one of saId linkage means to move an associated valve plate for moving the same between open and closed positions.
Claim 2
Dependent Claim
171 words
A pneumatic discharge arrangement for a hopper including a housing having opposed sloping walls converging into a longitudinal trough at their lower ends adapted to connect to pneumatic conveying means, said housing including laterally extending walls providing a plurality of compartments communicating with said trough, the improvement comprising: a valve plate in each compartment adapted to be moved from open to closed positions for regulating the discharge of material to said trough, means for moving said plate including a shaft rotatably supported on said housing and being longitudinally shiftable within said compartments, a linkage means within each compartment supported on said shaft to be actuated thereby, means pivotally connecting each said linkage means to each said valve plate means, means for rotating said shaft, an actuating element on said shaft within each compartment, and means for shifting said shaft longitudinally whereby said actuating means may be selectively engaged with at least one of saId linkage means to move an associated valve plate for moving the same between open and closed positions.
Claim 3
Dependent Claim
25 words
The invention in accordance with claim 1, said valve plate including laterally spaced sealing edges adapted to engage said sloping walls in the closed position.
Claim 4
Dependent Claim
21 words
The invention in accordance with claim 2, said plate having an inverted V-shaped configuration including diverging walls providing said sealing edges.
Claim 5
Dependent Claim
41 words
The invention in accordance with claim 1, said linkage means including a first link rotatably connected to said shaft with said shaft being slidable relative thereto, and a second link pivotally connected to said first link and to said valve plate.
Claim 6
Dependent Claim
73 words
The invention in accordance with claim 1, said valve plate including spaced walls engageable with said lateral walls for closing communication of said compartments with said trough, said linkage means comprising toggle links, one of which is connected to said plate between said walls, and the other of said links being pivotally connected to said shaft, said actuating means engaging said toggle links during shifting movement of said shaft to actuate the same.
Claim 7
Dependent Claim
24 words
The invention in accordance with claim 1, each actuating element including a key on said shaft engageable with an aperture in each linkage means.
Claim 8
Dependent Claim
60 words
The invention in accordance with claim 1, said linkage means comprising a toggle linkage having one end thereof pivotally connected to said shaft and another end pivotally connected to said valve plate, said shaft being slidable through said pivotal connection of said first end, and each said actuating element being engageable with one of said toggle links during shifting movement.
Claim 9
Dependent Claim
41 words
The invention in accordance with claim 1, said means for rotating said shaft including a lever pivotally supported on said housing, and a toggle linkage having one end pivotally connected to said lever and another end rigidly connected to said shaft.
Claim 10
Dependent Claim
28 words
The invention in accordance with claim 8, said means for shifting said shaft longitudinally including lever means pivotally supported on said housing and pivotally connected to said shaft.
Claim 11
Dependent Claim
25 words
The invention in accordance with claim 9, said trough having conduit portions at opposed ends thereof adapted to be removably connected to said conveying means.
Claim 12
Dependent Claim
28 words
The invention in accordance with claim 1, including guide means between said walls and said valve plate for guiding movement of said valve plates in a vertical direction.
References Cited (Backward Citations)
US2743026A
Cited
US2939592A
Cited
US3105721A
Cited
US3350139A
Cited
US3490623A
Cited
US3501030A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |