US3771732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulper
Assignee: Individual
•
Filing: 1972-07-19
•
Granted: 1973-11-13
•
Expires: 1992-07-19
Abstract
Abstract A pulper uses a stator having a ridged peripheral surface and a rotor adjacent the stator and having a peripheral rim with a ridged surface confronting the ridged surface of the stator. Spokes extend from the rotor''s central region to support the rim and provide a substantially open, annular region radially inward from the rim. A cleaner is spaced over the open region and preferably includes cleaning vanes allowing only clean pulp to enter the open region between the spokes to be pumped out through the ridged surfaces of the rotor and stator.
Inventors
- 👤 E Cumpston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:26
CPC Classifications
D; D21; D21B; D21B1/00; D21B1/04; D21B1/12; D21B1/30; D21B1/34; D21B1/345; B; B02; B02C; B02C7/00; B02C7/02
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
93 words
An improved pulper comprising: a. a stator having a ridged surface on a peripheral annular region; b. a rotor adjacent said stator; c. a shaft for driving said rotor; d. means for supporting the central region of said rotor on said shaft; e. said rotor having a peripheral rim; f. spokes supporting said rim on said central region to provide a substantially open, annular region radially inward from said rim; g. a ridged surface of said rim confronting said ridged surface of said stator; and h. a cleaner spaced over said open region.
Claim 2
Dependent Claim
93 words
An improved pulper comprising: a. a stator having a ridged surface on a peripheral annular region; b. a rotor adjacent said stator; c. a shaft for driving said rotor; d. means for supporting the central region of said rotor on said shaft; e. said rotor having a peripheral rim; f. spokes supporting said rim on said central region to provide a substantially open, annular region radially inward from said rim; g. a ridged surface of said rim confronting said ridged surface of said stator; and h. a cleaner spaced over said open region.
Claim 3
Dependent Claim
17 words
The pulper of claim 1 wherein said spokes are plates extending radially and axially of said rotor.
Claim 4
Dependent Claim
25 words
The pulper of claim 2 wherein said spokes extend for an axial distance of at least 6 percent of the outside diameter of said rotor.
Claim 5
Dependent Claim
24 words
The pulper of claim 2 wherein said cleaner and said ridged surface of said rotor are spaced axially on opposite sides of said spokes.
Claim 6
Dependent Claim
10 words
The pulper of claim 1 whErein said cleaner includes vanes.
Claim 7
Dependent Claim
43 words
The pulper of claim 5 wherein said vanes are inclined approximately 45* to the axis of said rotor and approximately 45* to the radius of said rotor and oriented to have outwardly trailing edges relative to the direction of rotation of said rotor.
Claim 8
Dependent Claim
21 words
The pulper of claim 5 wherein said cleaner includes a cover extending radially outward beyond the inner periphery of said rim.
Claim 9
Dependent Claim
22 words
The pulper of claim 7 wherein said cover is a flat, annular plate parallel with the axially outer surface of said rim.
Claim 10
Dependent Claim
13 words
The pulper of claim 8 wherein said cleaning vanes are substantially identical plates.
Claim 11
Dependent Claim
54 words
The pulper of claim 9 wherein said cleaning vane plates are parallelograms extending between said rim and said cover and inclined approximately 45* to the axis of said rotor and approximately 45* to the radius of said rotor and oriented to have outwardly trailing edges relative to the direction of rotation of said rotor.
Claim 12
Dependent Claim
38 words
THe pulper of claim 1 wherein a cylinder extends around said central region, said spokes are axially oriented plates extending radially outward from said cylinder, and said rim is formed as an annular box supported by said spokes.
Claim 13
Dependent Claim
35 words
The pulper of claim 11 wherein said annular box is formed of radially inner and outer cylinders, an axially inner, annular plate supporting said ridged surface of said rotor, and an axially outer, annular plate.
Claim 14
Dependent Claim
16 words
The pulper of claim 12 including mixing vanes around the axially outer periphery of said rotor.
Claim 15
Dependent Claim
26 words
The pulper of claim 1 wherein said ridged surfaces are formed of a plurality of ridged sector plates clamped in place on said rotor and stator.
Claim 16
Dependent Claim
18 words
The pulper of claim 14 wherein said sector plates have generally radial grooves oriented to pump radially outwardly.
Claim 17
Dependent Claim
12 words
The pulper of claim 14 wherein said sector plates have potted bases.
Claim 18
Dependent Claim
40 words
The pulper of claim 14 wherein said rotor and stator have peripheral abutment surfaces for engaging the radially outer edges of said sector plates and a clamp ring to secure the radially inner edges of said sector plates in place.
Claim 19
Dependent Claim
24 words
The pulper of claim 17 wherein said rotor and stator have a cylindrical ridge for engaging the radially inner edge of said clamp ring.
Claim 20
Dependent Claim
35 words
The pulper of claim 18 wherein said inner and outer edges of said sector plates are dove-tailed, and said abutment surfaces and said clamp rings have corresponding dove-tails to hold said sector plates in place.
Claim 21
Dependent Claim
23 words
The pulper of claim 1 wherein said cleaner includes spaced-apart vanes and said spokes are plates extending radially and axially of said rotor.
Claim 22
Dependent Claim
67 words
The pulper of claim 20 wherein said cleaner includea a cover extending radially outward beyond the inner periphery of said rim and said cleaning vanes extend between said rim and said cover and are inclined approximately 45* to the axis of said rotor and approximately 45* to the radius of said rotor and oriented to have outwardly trailing edges relative to the rotational direction of said rotor.
Claim 23
Dependent Claim
33 words
The pulper of claim 21 wherein said cover is a flat, annular plate parallel with the axially outer surface of said rim, and said cleaning vanes are substantially identical plates formed as parallelograms.
Claim 24
Dependent Claim
44 words
The pulper of claim 20 wherein said spokes extend for an axial distance of at least 6 percent of the outside diameter of said rotor, and said cleaner and said ridged surface of said rotor are spaced axially on opposite sides of said spokes.
Claim 25
Dependent Claim
67 words
The pulper of claim 23 wherein said cleaner includes a cover extending radially outward beyond the inner periphery of said rim, and said cleaning vanes extend between said rim and said cover and are inclined approximately 45* to the axis of said rotor and approximately 45* to the radius of said rotor and oriented to have outwardly trailing edges relative to the rotational direction of said rotor.
Claim 26
Dependent Claim
33 words
The pulper of claim 24 wherein said cover is a flat aNnular plate parallel with the axially outer surface of said rim, and said cleaning vanes are substantially identical plates formed as parallelograms.
Claim 27
Dependent Claim
48 words
The pulper of claim 1 wherein a cylinder extends around said central region, said spokes are plates extending anxially of said rotor and extending radially outward from said cylinder, said rim is formed as an annular box supported by said spokes, and said cleaner includes spaced-apart cleaning vanes.
Claim 28
Dependent Claim
35 words
The pulper of claim 26 wherein said annular box is formed of radially inner and outer cylinders, an axially inner, annular plate supporting said ridged surface of said rotor, and an axially outer, annular plate.
Claim 29
Dependent Claim
67 words
The pulper of claim 27 wherein said cleaner includes a cover extending radially outward beyond the inner periphery of said rim, and said cleaning vanes extend between said rim and said cover and are inclined approximately 45* to the axis of said rotor and approximately 45* to the radius of said rotor and oriented to have outwardly trailing edges relative to the rotational direction of said rotor.
Claim 30
Dependent Claim
33 words
The pulper of claim 28 wherein said cover is a flat, annular plate parallel with the axially outer surface of said rim, and said cleaning vanes are substantially identical plates formed as parallelograms.
Claim 31
Dependent Claim
43 words
The pulper of claim 1 wherein said cleaner includes spaced-apart vanes, said spokes are plates extending radially and axially of said rotor, and said ridged surfaces are formed of a plurality of ridged sector plates clamped in place on said rotor and stator.
Claim 32
Dependent Claim
50 words
The pulper of claim 30 wherein said sector plates have generally radial grooves oriented to pump outwardly, said rotor and stator have peripheral abutment surfaces to engage the radially outer edges of said sector plates, and a clamp ring secures the radially inner edges of said sector plates in place.
Claim 33
Dependent Claim
12 words
The pulper of claim 30 wherein said sector plates have potted bases.
Claim 34
Dependent Claim
95 words
The pulper of claim 32 wherein said sector plates have generally radial grooves oriented to pump outwardly, said rotor and stator have peripheral abutment surfaces to engage the radially outer edges of said sector plates, a clamp ring secures the radially inner edges of said sector plates in place, said rotor and stator have a cylindrical ridge engaging the radially inner edge of said clamp ring, said inner and outer edges of said sector plates are dove-tailed, and said abutment surfaces and said clamp rings have corresponding dove-tails to hold said sector plates in place.
Claim 35
Dependent Claim
38 words
The pulper of claim 30 wherein a cylinder extends around said central region, said spokes are axially oriented plates extending radially outward from said cylinder, and said rim is formed as an annular box supported by said spokes.
Claim 36
Dependent Claim
67 words
The pulper of claim 34 wherein said cleaner includes a cover extending radially outward beyond the inner periphery of said rim, and said cleaning vanes extend between said rim and said cover and are inclined approximately 45* to the axis of said rotor and approximately 45* to the radius of said rotor and oriented to have outwardly trailing edges relative to the rotational direction of said rotor.
Claim 37
Dependent Claim
33 words
The pulper of claim 35 wherein said cover is a flat, annular plate parallel with the axially outer surface of said rim, and said cleaning vanes are substantially identical plates formed as parallelograms.
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) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |