US3628897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve and pump
Assignee: Individual
•
Filing: 1969-10-21
•
Granted: 1971-12-21
•
Expires: 1989-10-21
Abstract
Abstract A pump and a valve therefor, the valve having an inlet conduit, an outlet and an opening connected to the pump cylinder, and a rotary part rotatable selectively to connect the opening to the inlet conduit and the outlet. The passage formed in the valve when the rotary part is in the position to connect the inlet conduit to the opening has the form of a pipe bend.
Inventors
- 👤 Georg Stetter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:58
CPC Classifications
F; F04; F04B; F04B15/00; F04B15/02; F04B15/023; F04B7/00; F04B7/0003; F04B7/0011; Y; Y10; Y10S; Y10S417/00; Y10S417/90
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
197 words
A valve assembly for a pump, said valve assembly comprising in combination: a. a housing defining a chamber; b. an inlet conduit to said housing; c. means defining an outlet from said housing and having a center line; d. means defining an opening in said housing for communication with the chamber of said pump, and having a center line; e. a rotary valve disposed within said chamber and having an axis of rotation; f. said rotary valve forming a wall transverse to said axis of rotation defining, within said chamber, two passages; g. the first of said passages being curved in the form of a pipe bend; and h. the second of said passages being substantially straight; said rotary valve being rotatable to a first position effective to allow communication between said inlet conduit and said opening through said first passage, and to a second position effective to allow communication between said opening and said outlet through said second passages, said axis of rotation being perpendicular to said passage; whereby said rotary valve is in said first position during the suction stroke of said pump and in said second position during the compression stroke of said pump.
Claim 2
Dependent Claim
197 words
A valve assembly for a pump, said valve assembly comprising in combination: a. a housing defining a chamber; b. an inlet conduit to said housing; c. means defining an outlet from said housing and having a center line; d. means defining an opening in said housing for communication with the chamber of said pump, and having a center line; e. a rotary valve disposed within said chamber and having an axis of rotation; f. said rotary valve forming a wall transverse to said axis of rotation defining, within said chamber, two passages; g. the first of said passages being curved in the form of a pipe bend; and h. the second of said passages being substantially straight; said rotary valve being rotatable to a first position effective to allow communication between said inlet conduit and said opening through said first passage, and to a second position effective to allow communication between said opening and said outlet through said second passages, said axis of rotation being perpendicular to said passage; whereby said rotary valve is in said first position during the suction stroke of said pump and in said second position during the compression stroke of said pump.
Claim 3
Dependent Claim
24 words
a chamber in the form of a cylinder having an open end connected to said opening means of said valve at said open end;
Claim 4
Dependent Claim
24 words
a chamber in the form of a cylinder having an open end connected to said opening means of said valve at said open end;
Claim 5
Dependent Claim
24 words
A valve as specified in claim 1 wherein said passage having the form of a pipe bend includes an angle of less than 90*.
Claim 6
Dependent Claim
35 words
two chambers, each of said chambers in the form of a cylinder, each of said cylinders having an open end connected to said opening means of one of said valves respectively at said open end;
Claim 7
Dependent Claim
35 words
two chambers, each of said chambers in the form of a cylinder, each of said cylinders having an open end connected to said opening means of one of said valves respectively at said open end;
Claim 8
Dependent Claim
30 words
two pistons, each piston being movable within one of said cylinders, respectively, to a first position defining a suction stroke, and movable to a second position defining a compression stroke;
Claim 9
Dependent Claim
30 words
two pistons, each piston being movable within one of said cylinders, respectively, to a first position defining a suction stroke, and movable to a second position defining a compression stroke;
Claim 10
Dependent Claim
22 words
A valve as specified in claim 2 wherein said passage having the form of a pipe bend includes an angle of 70*.
Claim 11
Dependent Claim
30 words
a piston movable within said cylinder to a first position, representing the suction stroke of said pump, and movable to a second position representing the compression stroke of said pump;
Claim 12
Dependent Claim
30 words
a piston movable within said cylinder to a first position, representing the suction stroke of said pump, and movable to a second position representing the compression stroke of said pump;
Claim 13
Dependent Claim
12 words
a delivery pipe connected to said outlet means of said valve; and
Claim 14
Dependent Claim
12 words
a delivery pipe connected to said outlet means of said valve; and
Claim 15
Dependent Claim
40 words
A valve as specified in claim 1 wherein center lines of said inlet conduit, outlet means and opening means are substantially coplanar, and said center lines of said opening means and said outlet means are substantially straight and substantially parallel.
Claim 16
Dependent Claim
18 words
two delivery pipes, each pipe being connected to said outlet means of one of said valves respectively; and
Claim 17
Dependent Claim
18 words
two delivery pipes, each pipe being connected to said outlet means of one of said valves respectively; and
Claim 18
Dependent Claim
47 words
said inlet conduits of said valves being connectable to a source of material to be pumped; whereby each of said rotary valves is in said first position during the suction stroke of its respective cylinder and in said second position during the compression stroke of said cylinder.
Claim 19
Dependent Claim
47 words
said inlet conduits of said valves being connectable to a source of material to be pumped; whereby each of said rotary valves is in said first position during the suction stroke of its respective cylinder and in said second position during the compression stroke of said cylinder.
Claim 20
Dependent Claim
44 words
said inlet conduit of said valve being connectable to a source of material to be pumped; whereby said rotary valve is in said first position during said suction stroke of said pump and in said second position during said compression stroke of said pump.
Claim 21
Dependent Claim
44 words
said inlet conduit of said valve being connectable to a source of material to be pumped; whereby said rotary valve is in said first position during said suction stroke of said pump and in said second position during said compression stroke of said pump.
Claim 22
Dependent Claim
16 words
A valve as specified in claim 1 wherein said opening means is rhombic in cross section.
Claim 23
Dependent Claim
29 words
A valve as specified in claim 1 wherein said rotary part includes edges sealingly engaging said housing and wherein said edges are formed with a plurality of parallel grooves.
Claim 24
Dependent Claim
5 words
A pump comprising in combination:
Claim 25
Dependent Claim
5 words
A pump comprising in combination:
Claim 26
Dependent Claim
23 words
A pump as specified in claim 7 wherein a piston is movable in said cylinder substantially to the open end of said cylinder.
Claim 27
Dependent Claim
20 words
A pump as specified in claim 8 and further comprising pivot means, said valve being pivotable about said pivot means.
Claim 28
Dependent Claim
5 words
A pump comprising in combination:
Claim 29
Dependent Claim
5 words
A pump comprising in combination:
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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |