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US3629975A
Expired / Lapsed
US
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Particle-throwing apparatus
Assignee: Pangborn Corp
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Filing: 1969-10-10
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Granted: 1971-12-28
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Expires: 1989-10-10
Abstract
Abstract A particle-throwing apparatus comprises a runnerhead having a plurality of radially mounted throwing vanes which are inclined with respect to the planar support surface of the runnerhead. An impeller case is mounted at the center of the runnerhead with a slotted impeller disposed in the impeller case. Each impeller slot includes a particle projecting edge which is inclined parallel to a corresponding vane in the runnerhead.
Inventors
- 👤 Harper W Good
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:29
CPC Classifications
B; B24; B24C; B24C5/00; B24C5/06; B24C5/068
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
195 words
A particle-throwing apparatus comprising a runnerhead mounted for rotation about its central axis, said runnerhead having a planar support surface normal to said central axis, a plurality of throwing vanes radially mounted on said runnerhead support surface for rotation with said runnerhead, each of said vanes having a particle-throwing face inclined with respect to said planar support surface, each of said vanes having a heel, the heels of said vanes being spaced from each other to create an open area at the center of said support surface, an impeller case disposed in said open area, a feed slot in the wall of said impeller case, an impeller mounted in said impeller case, said impeller being connected to said runnerhead for rotation therewith, said impeller having an upstanding wall, said impeller having spaced longitudinal blades which create peripheral slots therebetween about said wall of said impeller whereby particles fed into said impeller are projected therefrom through said impeller case slot and against said vanes, each of said peripheral impeller slots having a particle-projecting edge formed by the edge of its adjacent blade, and each particle projecting edge being inclined with respect to said planar support surface.
Claim 2
Dependent Claim
195 words
A particle-throwing apparatus comprising a runnerhead mounted for rotation about its central axis, said runnerhead having a planar support surface normal to said central axis, a plurality of throwing vanes radially mounted on said runnerhead support surface for rotation with said runnerhead, each of said vanes having a particle-throwing face inclined with respect to said planar support surface, each of said vanes having a heel, the heels of said vanes being spaced from each other to create an open area at the center of said support surface, an impeller case disposed in said open area, a feed slot in the wall of said impeller case, an impeller mounted in said impeller case, said impeller being connected to said runnerhead for rotation therewith, said impeller having an upstanding wall, said impeller having spaced longitudinal blades which create peripheral slots therebetween about said wall of said impeller whereby particles fed into said impeller are projected therefrom through said impeller case slot and against said vanes, each of said peripheral impeller slots having a particle-projecting edge formed by the edge of its adjacent blade, and each particle projecting edge being inclined with respect to said planar support surface.
Claim 3
Dependent Claim
44 words
A particle-throwing apparatus as set forth in claim 1 wherein each of said peripheral impeller slots is disposed for projecting particles to a respective vane, and the particle projecting edge of each impeller slot being parallel to the throwing face of its respective vane.
Claim 4
Dependent Claim
31 words
A particle-throwing apparatus as set forth in claim 2 wherein the throwing face of every other vane is inclined at the same first angle with respect to said planar support surface.
Claim 5
Dependent Claim
30 words
A particle-throwing apparatus as set forth in claim 3 wherein the vanes intermediate said every other vane are inclined at the same second angle with respect to said support surface.
Claim 6
Dependent Claim
26 words
A particle-throwing apparatus as set forth in claim 4 wherein said first angle is an acute angle and said second angle is a complementary obtuse angle.
Claim 7
Dependent Claim
37 words
A particle-throwing apparatus as set forth in claim 5 wherein each impeller blade is in the shape of a trapezoid having a short parallel side and a long parallel side interconnected by a pair of intermediate sides.
Claim 8
Dependent Claim
32 words
A particle-throwing apparatus as set forth in claim 6 wherein the short parallel side of each trapezoid is disposed adjacent the long parallel side of the trapezoid of the adjacent impeller blade.
Claim 9
Dependent Claim
19 words
A particle-throwing apparatus as set forth in claim 7 wherein all of said impeller slots are of uniform wIdth.
Claim 10
Dependent Claim
18 words
A particle-throwing apparatus as set forth in claim 8 wherein the intermediate sides are substantially equal in length.
Claim 11
Dependent Claim
37 words
A particle-throwing apparatus as set forth in claim 1 wherein each impeller blade is in the shape of a trapezoid having a short parallel side and a long parallel side interconnected by a pair of intermediate sides.
Claim 12
Dependent Claim
29 words
A particle-throwing apparatus as set forth in claim 10 wherein each short parallel side is disposed adjacent the long parallel side of the trapezoid of the adjacent impeller blade.
Claim 13
Dependent Claim
24 words
A particle-throwing apparatus as set forth in claim 11 wherein the intermediate sides are disposed at complementary angles with respect to the parallel sides.
Claim 14
Dependent Claim
18 words
A particle-throwing apparatus as set forth in claim 12 wherein the intermediate sides are substantially equal in length.
Claim 15
Dependent Claim
19 words
A particle-throwing apparatus as set forth in claim 13 wherein all of said impeller slots are of uniform width.
Claim 16
Dependent Claim
21 words
A particle-throwing apparatus as set forth in claim 14 wherein a tapered rib is connected to each blade in said impeller.
Claim 17
Dependent Claim
49 words
A particle-throwing apparatus as set forth in claim 15 wherein each rib assumes the generally trapezoidal shape of its blade, each rib having a substantially triangular face disposed toward the interior of said impeller, and the sides of each rib being integral extensions of the sides of its blades.
Claim 18
Dependent Claim
127 words
An impeller for use in a particle-throwing apparatus, said impeller being in the form of a hollow cylindrical body having a central axis, said body being open at its top whereby throwing particles may be fed therein, said body having a closed bottom wall, means on said bottom wall for securing said impeller to a rotatable runnerhead of a particle-throwing apparatus whereby said impeller may rotate with the runnerhead, said body having a cylindrical sidewall formed by a plurality of spaced-apart blades, the spacing of said blades creating a plurality of slots in said sidewall, each of said slots having a particle-projecting edge formed by the edge of its adjacent blade, and each projecting edge being inclined with respect to said bottom wall and said central axis.
Claim 19
Dependent Claim
127 words
An impeller for use in a particle-throwing apparatus, said impeller being in the form of a hollow cylindrical body having a central axis, said body being open at its top whereby throwing particles may be fed therein, said body having a closed bottom wall, means on said bottom wall for securing said impeller to a rotatable runnerhead of a particle-throwing apparatus whereby said impeller may rotate with the runnerhead, said body having a cylindrical sidewall formed by a plurality of spaced-apart blades, the spacing of said blades creating a plurality of slots in said sidewall, each of said slots having a particle-projecting edge formed by the edge of its adjacent blade, and each projecting edge being inclined with respect to said bottom wall and said central axis.
Claim 20
Dependent Claim
32 words
An impeller as set forth in claim 17 wherein each particle projecting edge is inclined in a direction opposite to the direction of inclination of the particle-projecting edge of its adjacent slot.
Claim 21
Dependent Claim
42 words
An impeller as set forth in claim 18 wherein the particle-projecting edge of each slot is inclined at an angle with respect to said bottom wall which is complementary to the angle of inclination of the particle-projecting edge of the adjacent slot.
Claim 22
Dependent Claim
35 words
An impeller as set forth in claim 17 wherein each blade is in the form of a trapezoid having a short parallel side and a long parallel side interconnected by a pair of intermediate sides.
Claim 23
Dependent Claim
27 words
An impeller as set forth in claim 20 wherein each short parallel side is disposed adjacent the long parallel side of the trapezoid of the adjacent blade.
Claim 24
Dependent Claim
24 words
An impeller as set forth in claim 21 wherein the intermediate sides are mirror images of each other and are of substantially equal length.
Claim 25
Dependent Claim
17 words
An impeller as set froth in claim 22 wherein all of said slots are of uniform width.
Claim 26
Dependent Claim
20 words
An impeller as set forth in claim 23 wherein a tapered rib is connected to each blade in said impeller.
Claim 27
Dependent Claim
48 words
An impeller as set forth in claim 24 wherein each rib assumes the generally trapezoidal shape of its blade, each rib having a substantially triangular face disposed toward the interior of said impeller, and the sides of each rib being integral extensions of the sides of its blades.
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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |