US3851718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller cutter
Assignee: Atlas Copco Jarva Inc
•
Filing: 1973-08-20
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Granted: 1974-12-03
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Expires: 1993-08-20
Abstract
Abstract A roller cutter assembly adapted to be fixed to the cutter head of a tunneling machine is disclosed. The cutter assembly includes a cutter rotatably mounted on a shaft so that end portions of the shaft project from the cutter. Each of those projecting end portions has a pair of flat faces the planes of which intersect at an angle of 90*. A generally U-shaped saddle having projecting arm portions mounts the shaft so that the cutter is rotatable on the shaft. Each arm of the saddle has a pair of flat faces the planes of which intersect at an angle of 90 degrees and which engage the faces on a projecting end portion of the shaft. The engaged faces are clamped together by bolts, each of which exerts a clamping force having components normal to the engaged faces and each of which is more nearly horizontal than vertical with respect to the intended cutting plane. According to one aspect of this invention, the cutter is a gauge cutter and one projecting arm portion of the saddle may be removed from the remainder of the saddle to facilitate removal and replacement of the gauge cutter.
Inventors
- 👤 T Fink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:52
CPC Classifications
E; E21; E21D; E21D9/00; E21D9/10; E21D9/1006; E21D9/104; E21B; E21B10/00; E21B10/08; E21B10/10
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
118 words
A roller cutter assembly comprising a cutter rotatably mounted on a shaft so that end portions of said shaft project from said cutter, said end portions having first and second flat angularly related faces, a generally U-shaped saddle having projecting arm portions mounting said shaft and a mounting face adapted to be secured to a cutter head, each projecting arm portion having first and second flat angularly related faces respectively engaging the first and second faces on each said end portion, means for clamping each arm to each end portion and for providing a clamping force between engaged faces having components normal to each face, said clamping means providing a greater force component parallel to said mounting face.
Claim 2
Dependent Claim
118 words
A roller cutter assembly comprising a cutter rotatably mounted on a shaft so that end portions of said shaft project from said cutter, said end portions having first and second flat angularly related faces, a generally U-shaped saddle having projecting arm portions mounting said shaft and a mounting face adapted to be secured to a cutter head, each projecting arm portion having first and second flat angularly related faces respectively engaging the first and second faces on each said end portion, means for clamping each arm to each end portion and for providing a clamping force between engaged faces having components normal to each face, said clamping means providing a greater force component parallel to said mounting face.
Claim 3
Dependent Claim
27 words
A roller cutter assembly according to claim 1, wherein non-engaged portions of said projecting arm portions are substantially exposed to allow clear access to said clamping means.
Claim 4
Dependent Claim
25 words
A roller cutter according to claim 1, wherein one of said projecting arms has means removably fixing it to the remainder of said U-shaped saddle.
Claim 5
Dependent Claim
22 words
A roller cutter assembly according to claim 1, wherein the planes of said angularly related faces define an angle of about 90*.
Claim 6
Dependent Claim
15 words
A roller cutter assembly according to claim 4, wherein said first and second faces intersect.
Claim 7
Dependent Claim
32 words
A roller cutter assembly accordIng to claim 1, wherein said means for clamping comprises a bolt extending through each end portion and at least one of said faces on said arm portion.
Claim 8
Dependent Claim
23 words
A roller cutter assembly according to claim 6, wherein said bolts are more nearly horizontal than vertical with respect to said mounting face.
Claim 9
Dependent Claim
180 words
An inside roller cutter assembly adapted to be fixed to a rotatable cutter head, comprising a cutter rotatably mounted on a shaft so that end portions of said shaft project from said cutter, said end portions having first and second flat faces intersecting at an angle of about 90 degrees, a generally U-shaped saddle having projecting arm portions mounting said shaft and a mounting face adapted to be secured to a cutter head, each projecting arm portion having first and second flat faces intersecting at an angle of about 90 degrees, and respectively engaging the first and second faces on each said end portion, a bolt extending through each end portion and at least one of said faces on said arm portion, each bolt defining an acute angle with said at least one of said faces and clamping said first and second faces of said end portion to the first and second faces of said arm portion with a force having components normal to each face, each bolt being more nearly horizontal than vertical with respect to said mounting face.
Claim 10
Dependent Claim
180 words
An inside roller cutter assembly adapted to be fixed to a rotatable cutter head, comprising a cutter rotatably mounted on a shaft so that end portions of said shaft project from said cutter, said end portions having first and second flat faces intersecting at an angle of about 90 degrees, a generally U-shaped saddle having projecting arm portions mounting said shaft and a mounting face adapted to be secured to a cutter head, each projecting arm portion having first and second flat faces intersecting at an angle of about 90 degrees, and respectively engaging the first and second faces on each said end portion, a bolt extending through each end portion and at least one of said faces on said arm portion, each bolt defining an acute angle with said at least one of said faces and clamping said first and second faces of said end portion to the first and second faces of said arm portion with a force having components normal to each face, each bolt being more nearly horizontal than vertical with respect to said mounting face.
Claim 11
Dependent Claim
28 words
An inside roller cutter assembly according to claim 8, wherein non-engaged portions of said projecting arm portions are substantially exposed to allow clear access to said clamping means.
Claim 12
Dependent Claim
196 words
A gauge roller cutter assembly adapted to be fixed to a rotatable cutter head, comprising a cutter rotatably mounted on a shaft so that end portions of said shaft project from said cutter, said end portions having first and second flat faces intersecting at an angle of about 90*, a generally U-shaped saddle having projecting arm portions mounting said shaft and a mounting face adapted to be secured to a cutter head, each projecting arm portion having first and second flat faces intersecting at an angle of about 90 degrees and respectively engaging the first and second faces on each said end portion, one of said arm portions having means removably fixing it to the remainder of said U-shaped saddle, a bolt extending through each end portion and at least one of said faces on said arm portion, each bolt defining an acute angle with said at least one of said faces and clamping said first and second faces of said end portion to the first and second faces of said arm portion with a force having components normal to each face, each bolt being more nearly horizontal than vertical with respect to said mounting face.
Claim 13
Dependent Claim
196 words
A gauge roller cutter assembly adapted to be fixed to a rotatable cutter head, comprising a cutter rotatably mounted on a shaft so that end portions of said shaft project from said cutter, said end portions having first and second flat faces intersecting at an angle of about 90*, a generally U-shaped saddle having projecting arm portions mounting said shaft and a mounting face adapted to be secured to a cutter head, each projecting arm portion having first and second flat faces intersecting at an angle of about 90 degrees and respectively engaging the first and second faces on each said end portion, one of said arm portions having means removably fixing it to the remainder of said U-shaped saddle, a bolt extending through each end portion and at least one of said faces on said arm portion, each bolt defining an acute angle with said at least one of said faces and clamping said first and second faces of said end portion to the first and second faces of said arm portion with a force having components normal to each face, each bolt being more nearly horizontal than vertical with respect to said mounting face.
Claim 14
Dependent Claim
22 words
A gauge roller cutter assembly according to claim 10, wherein said means removably fixing one of said arm portions includes bolt means.
Claim 15
Dependent Claim
41 words
A gauge roller cutter assembly according to claim 11, wherein said means removably fixing one of said arm portions includes a key projecting from said one of said arm portions and a cooperating slot on said remainder of said U-shaped saddle.
Claim 16
Dependent Claim
193 words
A gauge roller cutter assembly adapted to be fixed to a rotatable cutter head, comprising a cutter rotatably mounted on a shaft so that end portions of said shaft project from said cutter, said end portions having first and second flat faces intersecting at an angle of about 90*, a generally U-shaped saddle having projecting arm portions mounting said shaft and a mounting face adapted to be secured to a cutter head, each projecting arm portion having first and second flat faces intersecting at an angle of about 90* and respectively engaging the first and second faces on each said end portion, one of said arm portions having means removably fixing it to the remainder of said U-shaped saddle, a bolt extending through each end portion and at least one of said faces on said arm portion, each bolt being more nearly horizontal than vertical with respect to said mounting face defining an acute angle with said at least one of said faces And clamping said first and second faces of said end portion to the first and second faces of said arm portion with a force having components normal to each face.
Claim 17
Dependent Claim
193 words
A gauge roller cutter assembly adapted to be fixed to a rotatable cutter head, comprising a cutter rotatably mounted on a shaft so that end portions of said shaft project from said cutter, said end portions having first and second flat faces intersecting at an angle of about 90*, a generally U-shaped saddle having projecting arm portions mounting said shaft and a mounting face adapted to be secured to a cutter head, each projecting arm portion having first and second flat faces intersecting at an angle of about 90* and respectively engaging the first and second faces on each said end portion, one of said arm portions having means removably fixing it to the remainder of said U-shaped saddle, a bolt extending through each end portion and at least one of said faces on said arm portion, each bolt being more nearly horizontal than vertical with respect to said mounting face defining an acute angle with said at least one of said faces And clamping said first and second faces of said end portion to the first and second faces of said arm portion with a force having components normal to each face.
Claim 18
Dependent Claim
22 words
A gauge roller cutter assembly according to claim 13, wherein said means removably fixing one of said arm portions includes bolt means.
Claim 19
Dependent Claim
41 words
A gauge roller cutter assembly according to claim 14, wherein said means removably fixing one of said arm portions includes a key projecting from said one of said arm portions and a cooperating slot on said remainder of said U-shaped saddle.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |