Patent US3566921A successfully refreshed from Google Patents.
US3566921A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple interlocked valve construction
Assignee: Proctor Silex Inc
•
Filing: 1969-05-22
•
Granted: 1971-03-02
•
Expires: 1989-05-22
Abstract
Abstract A bleeder valve for vacuum cleaners comprises a housing including a body portion having three longitudinally spaced ports laterally venting, and a stem portion having three longitudinally slidable laterally spaced vanes therein adapted to seal respective ones of said ports. Each of the sliding vanes includes four cutout portions, certain of the perimeters of which being predetermined camming type surfaces and respective ones of which being in lateral alignment to constitute four sets of three laterally aligned cutout portions. The stem portion further has four transverse bores each opening at the top of the stem portion to receive a reciprocative plunger therein, each plunger being of a sufficient lateral dimension to be received in each of the laterally aligned cutout portions of each respective set, each set being coincident with a respective bore. The camming type surfaces of the cutout portions are designed so that only one plunger may be in actuated position at any one time, and, by actuation of any of the four plungers, a predetermined, selective opening or closing of the three ports by their respective vanes may be accomplished for negative pressure control in the vacuum cleaner.
Inventors
- 👤 Frederick C Bell
- 👤 Clifford R Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:31
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/0072; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87096; Y10T137/87113
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
150 words
A valve construction comprising a housing having a flow passage therethrough, said passage including a closure member having a plurality of longitudinally spaced and laterally venting ports therethrough providing flow communication between fluids on both sides thereof, said housing having a longitudinal slot and a plurality of laterally spaced sliding vanes therein, each vane having a sealing area adapted to close a respective port, at least one of said vanes having an opening therethrough spaced from said sealing area and adapted to overlie at least one of said plurality of ports, said housing having a plurality of transverse bores each bore receiving a respective reciprocative plunger therein and each of said bores being coincident with a part of each of said vanes so that upon movement of a plunger within its respective bore toward said vanes, selected ones of said vanes are actuated to open or close their respective ports.
Claim 2
Dependent Claim
150 words
A valve construction comprising a housing having a flow passage therethrough, said passage including a closure member having a plurality of longitudinally spaced and laterally venting ports therethrough providing flow communication between fluids on both sides thereof, said housing having a longitudinal slot and a plurality of laterally spaced sliding vanes therein, each vane having a sealing area adapted to close a respective port, at least one of said vanes having an opening therethrough spaced from said sealing area and adapted to overlie at least one of said plurality of ports, said housing having a plurality of transverse bores each bore receiving a respective reciprocative plunger therein and each of said bores being coincident with a part of each of said vanes so that upon movement of a plunger within its respective bore toward said vanes, selected ones of said vanes are actuated to open or close their respective ports.
Claim 3
Dependent Claim
35 words
The construction set forth in claim 1 wherein each of said plurality of vanes has a plurality of cutout portions therein adapted to receive a part of respective plungers therein for actuation of said vanes.
Claim 4
Dependent Claim
41 words
The construction set forth in claim 2 wherein said cutout portions have predetermined perimeters, and said plungers reciprocate within said housing and actuate movement of said selected ones of said vanes by contact with the predetermined perimeters of said cutout portions.
Claim 5
Dependent Claim
39 words
The construction set forth in claim 2 wherein said plurality of vanes equals the number of ports and the plurality of cutout portions on each vane, of bores and of plungers is one greater than the number of ports.
Claim 6
Dependent Claim
72 words
The construction set forth in claim 2 wherein respective ones of said plurality of cutout portions are in substantial lateral alignment to form sets of cutout portions, and said sets are coincident with respective ones of said plurality of bores and plungers, each of said cutout portions has a predetermined perimeter, and each of said plungers is adapted to reciprocate within its respective bore and to move selective ones of said vanes.
Claim 7
Dependent Claim
76 words
The construction set forth in claim 5 wherein said perimeters include camming-type surfaces which on longitudinal movement are adapted to restore a previously moved plunger to its original position without its respective set so that only one plunger may be moved to actuate said vanes at any one time, certain of said perimeters have projections to preclude unintentional restoration of any plunger to original position, and each of said plungers are manually operable by pushbutton means.
Claim 8
Dependent Claim
168 words
A suction cleaner defining a structural chamber containing a fluid at a pressure lower than ambient, said chamber having a valve construction comprising a housing having a flow passage therethrough, said passage including a closure member having a plurality of longitudinally spaced and laterally venting ports therethrough providing flow communication between said fluid and ambient, said housing having a longitudinal slot and a plurality of laterally spaced sliding vanes therein, each vane having a sealing area adapted to close a respective port, at least one of said vanes having an opening therethrough spaced from said sealing area and adapted to overlie at least one of said plurality of ports, said housing having a plurality of transverse bores each bore receiving a respective reciprocative plunger therein and each of said bores being coincident with a part of each of said vanes so that upon movement of a plunger within its respective bore toward said vanes, selected ones of said vanes are actuated to open or close their respective ports.
Claim 9
Dependent Claim
168 words
A suction cleaner defining a structural chamber containing a fluid at a pressure lower than ambient, said chamber having a valve construction comprising a housing having a flow passage therethrough, said passage including a closure member having a plurality of longitudinally spaced and laterally venting ports therethrough providing flow communication between said fluid and ambient, said housing having a longitudinal slot and a plurality of laterally spaced sliding vanes therein, each vane having a sealing area adapted to close a respective port, at least one of said vanes having an opening therethrough spaced from said sealing area and adapted to overlie at least one of said plurality of ports, said housing having a plurality of transverse bores each bore receiving a respective reciprocative plunger therein and each of said bores being coincident with a part of each of said vanes so that upon movement of a plunger within its respective bore toward said vanes, selected ones of said vanes are actuated to open or close their respective ports.
References Cited (Backward Citations)
US552544A
Cited
US1106432A
Cited
US2996081A
Cited
US2914629A
Cited
US3192952A
Cited
US3353452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |