US3612420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Striking bar for cage mill
Assignee: Kennametal Inc
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Filing: 1969-10-01
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Granted: 1971-10-12
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Expires: 1989-10-01
Abstract
Abstract A striking bar for a cage mill in which the striking bar comprises a steel-backing member channel shaped toward the rear so as to fit over the front face of an axial bar extending between the end rings of the cage of the cage mill. The steel backing for the striking bar has carbide facing on the radially outer and radially inner sides and on the side facing away from the axial bar on which the striking bar is mounted. The striking bar is connected to the axial bar of the cage mill by bolts located near the radially outer side of the axial bar so that the radially inner part of the steel-backing member of the striking bar is not interrupted by bolt holes.
Inventors
- 👤 Frank W Hull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:08
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/26; B02C13/28; B02C13/2804
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
112 words
In a cage mill; cage means having end ring means and support bar means attached to said end ring means and extending axially therefrom, and striking bar means mounted on the leading side of said support bar means, said striking bar means comprising a channel-shaped steel backing member extending over the leading side and the radially inner and radially outer sides of said support bar means, hard wear resistant facing elements mounted on the leading face of said backing member and on at least the radially inner face thereof, and means securing said backing member to said support bar means and located in the radially outer region of said support bar means.
Claim 2
Dependent Claim
112 words
In a cage mill; cage means having end ring means and support bar means attached to said end ring means and extending axially therefrom, and striking bar means mounted on the leading side of said support bar means, said striking bar means comprising a channel-shaped steel backing member extending over the leading side and the radially inner and radially outer sides of said support bar means, hard wear resistant facing elements mounted on the leading face of said backing member and on at least the radially inner face thereof, and means securing said backing member to said support bar means and located in the radially outer region of said support bar means.
Claim 3
Dependent Claim
29 words
A cage mill according to claim 1 in which the plane of the leading side of said support bar means is substantially radial with respect to said cage means.
Claim 4
Dependent Claim
47 words
A cage mill according to claim 1 in which the said facing elements mounted on the leading face of said backing member have a greater thickness in the circumferential direction at the radially inner side of said striking bar means than at the radially outer side thereof.
Claim 5
Dependent Claim
28 words
A cage mill according to claim 3 in which the facing elements on the leading side of said striking bar means taper outwardly in the radially inward direction.
Claim 6
Dependent Claim
57 words
A cage mill according to claim 3 in which the facing elements on the leading face of said striking bar means comprise a first circumferentially thicker element at the radially inner region of the leading face of said support member and a second circumferentially thinner element extending from the radially outer side of said first element outwardly.
Claim 7
Dependent Claim
37 words
A cage mill according to claim 5 in which said backing member has a notch in which said first element is mounted, the leading sides of said first and second elements being disposed in a common plane.
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) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |