US3670412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power cutter
Assignee: Individual
•
Filing: 1970-09-28
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Granted: 1972-06-20
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Expires: 1990-09-28
Abstract
Abstract A power cutter for cutting deformable material and including a frame which has upper and lower jaws for receiving the material to be cut. The lower jaw includes a recess within which a cutting disc is rotatable by an associated power drive. The upper jaw is formed with depending cheek portions located on opposite sides of the cutter means to define side passages. The cheek portions extend forwardly of the cutter disc in overlying relation to a projecting guide shoe portion of the lower jaw to thereby define a frontal passage ahead of the cutting disc. The access openings to the frontal passage and the side passages are made sufficiently large that the material to be cut can pass therethrough, but sufficiently small that a person cannot inadvertently insert his finger and become cut by the cutting disc. The recess within which the cutter is rotatable and which is defined by the frame upper and lower jaws is of inverted Ushape to make accidental insertion of a finger even more difficult, the material to be cut deforming into a corresponding U-shape for entry and cutting thereof.
Inventors
- 👤 Frank W Cunningham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:57
CPC Classifications
B; B26; B26B; B26B25/00; A; A61; A61F; A61F15/00; A61F15/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
169 words
A power cutter for cutting deformable material, said cutter comprising: circular cutter means; mounting means rotatably mounting said cutter means and including upper and lower jaws, said lower jaw having a forwardly extending guide shoe portion located generally below and extending forwardly of said cutter means, and adapted for passage beneath the material to be cut, said upper jaw having fixed cheek portions extending downwardly on opposite sides of said cutter means in covering relation, and further extending forwardly of said cutter means in vertically and laterally spaced relation to said shoe portion to define passages ahead of and on opposite sides of said cutter means whereby material to be cut can be fed through said passages to said cutter means, the vertical and lateral spacing between said shoe and cheek portions being sufficiently narrow whereby entry of a person''s finger into said passages is preveNted; and drive means coupled to said cutter means for rotating said cutter means at a speed sufficient to effect cutting of the material.
Claim 2
Dependent Claim
169 words
A power cutter for cutting deformable material, said cutter comprising: circular cutter means; mounting means rotatably mounting said cutter means and including upper and lower jaws, said lower jaw having a forwardly extending guide shoe portion located generally below and extending forwardly of said cutter means, and adapted for passage beneath the material to be cut, said upper jaw having fixed cheek portions extending downwardly on opposite sides of said cutter means in covering relation, and further extending forwardly of said cutter means in vertically and laterally spaced relation to said shoe portion to define passages ahead of and on opposite sides of said cutter means whereby material to be cut can be fed through said passages to said cutter means, the vertical and lateral spacing between said shoe and cheek portions being sufficiently narrow whereby entry of a person''s finger into said passages is preveNted; and drive means coupled to said cutter means for rotating said cutter means at a speed sufficient to effect cutting of the material.
Claim 3
Dependent Claim
22 words
A power cutter according to claim 1 wherein said lower jaw includes a recess receiving the lower periphery of said cutter means.
Claim 4
Dependent Claim
22 words
A power cutter according to claim 1 and including elongated handle means secured to said mounting means and housing said drive means.
Claim 5
Dependent Claim
24 words
A power cutter according to claim 3 wherein said handle means is disposed generally parallel to the axis of rotation of said cutter means.
Claim 6
Dependent Claim
24 words
A power cutter according to claim 3 wherein said handle means is disposed generally perpendicular to the axis of rotation of said cutter means.
Claim 7
Dependent Claim
164 words
In a power cutter having cutter means and power means for rotating said cutter means to cut deformable material, cutter guard means comprising: spaced apart upper and lower jaws, said lower jaw having a forwardly extending guide shoe portion for passage beneath the material to be cut, said upper jaw having depending cheek portions located on opposite sides of said cutter means in covering relation, said cheek portions being in fixed, spaced apart relation to said shoe portion to define side passages on opposite sides of said cutter means, said cheek portions extending forwardly of said cutter means in overlying relation to said lower jaw to define a frontal passage ahead of said cutting means and extending rearwardly into communication with said side passages, the width of the openings to said side passages and frontal passage being sufficiently large to permit the material to pass therethrough, and sufficiently small to prevent a person from pressing his finger therethrough into contact with said cutter means.
Claim 8
Dependent Claim
164 words
In a power cutter having cutter means and power means for rotating said cutter means to cut deformable material, cutter guard means comprising: spaced apart upper and lower jaws, said lower jaw having a forwardly extending guide shoe portion for passage beneath the material to be cut, said upper jaw having depending cheek portions located on opposite sides of said cutter means in covering relation, said cheek portions being in fixed, spaced apart relation to said shoe portion to define side passages on opposite sides of said cutter means, said cheek portions extending forwardly of said cutter means in overlying relation to said lower jaw to define a frontal passage ahead of said cutting means and extending rearwardly into communication with said side passages, the width of the openings to said side passages and frontal passage being sufficiently large to permit the material to pass therethrough, and sufficiently small to prevent a person from pressing his finger therethrough into contact with said cutter means.
References Cited (Backward Citations)
US2627657A
Cited
US3262201A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |