US3701485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor construction for impact crusher
Assignee: Individual
•
Filing: 1970-06-19
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Granted: 1972-10-31
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Expires: 1990-06-19
Abstract
Abstract An impact crusher having a rotor with hammers in the form of elongated breaker bars extending longitudinally of the rotor. Adjusting means provides for extending the breaker bars out tangentially to compensate for wear. The rotor comprises an end drive assembly at each end, a tube or shaft rotatably connected at its ends to the end drive assemblies, a plurality of spaced breaker support rings fixed upon the tube or shaft, the endmost breaker support rings being fixed to the corresponding end drive assemblies. A plurality of open-ended tangential slots are formed in each breaker support ring. The breaker bars are located in said slots. Wedges, adjustably mounted in the inner enlargement of each slot, wedge the corresponding breaker bar against a breaker support bar located in the outer enlargement of each slot, firmly holding the breaker bar in adjusted position. Adjusting rings, rotatably mounted upon the tube, have peripheral lugs contacting the inner edges of the breaker bars. Adjusting screws threaded through rods located through the breaker bar support rings engage said lugs. Shear rods are located through registering apertures in the support rings and adjusting rings for holding the breaker bars in adjusted position.
Inventors
- 👤 Floyd E Kimble
- 👤 Richard H Buchsieb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:28
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/26; B02C13/28; B02C13/2804; B02C13/02; B02C13/06; B02C13/09; B02C13/31
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
83 words
An impact crusher having a rotor including axially arranged breaker support rings having chordal slots therein tangent to a common circle open at one end, breaker bars located in said slots and each having one edge extending through the open end of the corresponding slot, a tube or shaft upon which the support rings are fixed, and adjusting rings rotatable upon said tube or shaft for adjusting the breaker bars in said slots to compensate for wear and to control size of product.
Claim 2
Dependent Claim
83 words
An impact crusher having a rotor including axially arranged breaker support rings having chordal slots therein tangent to a common circle open at one end, breaker bars located in said slots and each having one edge extending through the open end of the corresponding slot, a tube or shaft upon which the support rings are fixed, and adjusting rings rotatable upon said tube or shaft for adjusting the breaker bars in said slots to compensate for wear and to control size of product.
Claim 3
Dependent Claim
53 words
An impact crusher having a rotor as defined in claim 1 in which the adjusting rings are located between and rotatable relative to certain of the support rings, shoulders upon the adjusting rings engaging the inner edges of the breaker bars and means for rotating the adjusting rings relative to the support rings.
Claim 4
Dependent Claim
39 words
An impact crusher having a rotor as defined in claim 2 in which the means for rotating the adjusting rings comprises removable adjusting screws, and in which shear rods are provided for holding the adjusting rings in adjusted position.
Claim 5
Dependent Claim
58 words
An impact crusher having a rotor as defined in claim 1, in which the open end of each slot is enlarged at each side of the breaker bar, a breaker support bar is in the enlargement on one side of the breaker bar and a wedge is in the enlargement on the other side oF the breaker bar.
Claim 6
Dependent Claim
41 words
An impact crusher having a rotor as defined in claim 2 in which an end drive assembly is detachably connected to each endmost breaker support ring, each end drive assembly including a disc of larger diameter than the breaker support rings.
Claim 7
Dependent Claim
35 words
An impact crusher having a rotor as defined in claim 5 in which the discs are peripherally shouldered and have a running fit in similarly shouldered openings in the end walls of the impact crusher.
Claim 8
Dependent Claim
64 words
An impact crusher having a rotor as defined in claim 6, in which a removable bearing support bracket with a horizontal top flange is outwardly spaced from the lower portion of each end wall and shear blocks fixed to the outer surface of the end wall rest upon said horizontal flange, this design permitting removal of the rotor through the side of the crusher.
Claim 9
Dependent Claim
27 words
An impact crusher having a rotor as defined in claim 7 in which safety release means is provided for holding the adjustable breaker bar in adjusted position.
Claim 10
Dependent Claim
28 words
An impact crusher having a rotor as defined in claim 5 in which the end drive assemblies include small diameter discs which receive the ends of the tube.
Claim 11
Dependent Claim
36 words
An impact crusher having a rotor as defined in claim 9 in which said larger diameter discs are detachably connected through screws to the endmost breaker support rings, enabling reinforcement of the endmost breaker support ring.
Claim 12
Dependent Claim
41 words
An impact crusher, as described in claim 2, in which the breaker support rings are axially spaced apart such that the distance therebetween enables passage of undersize material and thereby controls products size and volume of material passing through the crusher.
Claim 13
Dependent Claim
34 words
An impact crusher having a rotor as described in claim 2, in which the breaker support rings are constructed so that material may pass therethrough so as to aid productive output of the crusher.
Claim 14
Dependent Claim
71 words
An impact crusher for crushing coal and stone having a rotor, elongated breaker bars extending longitudinally of the rotor, each breaker bar having a blunt outer edge, said breaker bars being located tangent to a common circle, means upon the rotor for supporting the breaker bars in such location and means for adjusting the breaker bars tangentially to said common circle to compensate for wear and to control size of product.
Claim 15
Dependent Claim
71 words
An impact crusher for crushing coal and stone having a rotor, elongated breaker bars extending longitudinally of the rotor, each breaker bar having a blunt outer edge, said breaker bars being located tangent to a common circle, means upon the rotor for supporting the breaker bars in such location and means for adjusting the breaker bars tangentially to said common circle to compensate for wear and to control size of product.
Claim 16
Dependent Claim
29 words
An impact crusher for crushing coal and stone having a rotor as defined in claim 13 in which the breaker bars are located near the periphery of the rotor.
Claim 17
Dependent Claim
39 words
An impact crusher for crushing coal and stone having a rotor as defined in claim 13 in which the outer edge of each breaker bar is located adjacent the plane in which the next forward breaker bar is located.
Claim 18
Dependent Claim
95 words
An impact crusher for crushing coal and stone having a rotor, a center tube or shaft in said rotor, elongated breaker bars in the rotor parallel with the center tube or shaft, each breaker bar having a blunt outer edge, said breaker bars being located tangent to a common circle so that the adjustable length of the breaker bars is not limited by said center tube or shaft, means upon the rotor for adjusting the breaker bars tangentially to said common circle and means upon the rotor for supporting the breaker bars in adjusted position.
Claim 19
Dependent Claim
95 words
An impact crusher for crushing coal and stone having a rotor, a center tube or shaft in said rotor, elongated breaker bars in the rotor parallel with the center tube or shaft, each breaker bar having a blunt outer edge, said breaker bars being located tangent to a common circle so that the adjustable length of the breaker bars is not limited by said center tube or shaft, means upon the rotor for adjusting the breaker bars tangentially to said common circle and means upon the rotor for supporting the breaker bars in adjusted position.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |