US3604640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic control for gyratory crusher
Assignee: Terex Pegson Ltd
•
Filing: 1969-03-04
•
Granted: 1971-09-14
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Expires: 1989-03-04
Abstract
Abstract A gyratory crushing machine is equipped with hydraulic appliances for lifting and lowering the upper concave bowl relatively to the gyratory head, and thereby adjust the size of the crushing chamber, and for locking and centralizing the bowl in its adjusted position.
Inventors
- 👤 Roy Webster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:52
CPC Classifications
B; B02; B02C; B02C2/00; B02C2/02; B02C2/04; B02C2/045
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
101 words
In a gyratory crusher comprising a fixed base frame, an upper concave bowl structure supported on said base frame, and a head rotatable with a gyratory motion within said base frame for crushing material against said concave bowl, the improvement wherein a plurality of hydraulic piston/cylinder units are connected between said base frame and said bowl, supporting the latter in an adjustable fashion, and including wedge means positioned around said bowl and between the latter and said base frame for centralizing the bowl with respect to the base frame, said wedge means being hydraulically movable into and out of wedging engagement.
Claim 2
Dependent Claim
101 words
In a gyratory crusher comprising a fixed base frame, an upper concave bowl structure supported on said base frame, and a head rotatable with a gyratory motion within said base frame for crushing material against said concave bowl, the improvement wherein a plurality of hydraulic piston/cylinder units are connected between said base frame and said bowl, supporting the latter in an adjustable fashion, and including wedge means positioned around said bowl and between the latter and said base frame for centralizing the bowl with respect to the base frame, said wedge means being hydraulically movable into and out of wedging engagement.
Claim 3
Dependent Claim
20 words
A gyratory crusher according to claim 1, in which the wedge means are arranged around the bowl in an annulus.
Claim 4
Dependent Claim
34 words
A gyratory crusher according to claim 2, in which each of the wedge means is movable by hydraulic piston/cylinder means into and out of wedging engagement between the base frame and the bowl structure.
Claim 5
Dependent Claim
29 words
A gyratory crusher according to claim 1, in which said hydraulic piston/cylinder units are provided with means for locking fluid therein, whereby to support said bowl against axial movement.
Claim 6
Dependent Claim
43 words
A gyratory crusher according to claim 1, in which said hydraulic piston/cylinder units include hydraulically expansible metal sleeves which provide an interference fit clamp with at least one member operatively associated with telescopic coupling members arranged between the bowl and the base frame.
Claim 7
Dependent Claim
31 words
A gyratory crusher according to claim 1, in which the hydraulically controlled locking means include hydraulically expansible metal sleeves providing an interference fit clamp with the rams of said piston/cylinder units.
References Cited (Backward Citations)
US2791383A
Cited
US3140835A
Cited
US3337143A
Cited
US3420457A
Cited
US3388917A
Cited
US3454230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |