Patent US4290330A successfully refreshed from Google Patents.
US4290330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bandsaw blade guiding apparatus
Assignee: Amada Co Ltd
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Filing: 1980-02-05
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Granted: 1981-09-22
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Expires: 2000-02-05
Abstract
Abstract A bandsaw blade guiding apparatus has a support arm forming a cavity through which the blade moves. The cavity contains a resiliently supported anti-friction member which has a flat surface contacting the back edge of the blade during a cutting operation.
Inventors
- 👤 Isomi Washio
- 👤 Kenji Onishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:19
CPC Classifications
B; B23; B23D; B23D55/00; B23D55/08; B23D55/082; Y; Y10; Y10T; Y10T83/00; Y10T83/283; Y10T83/293; Y10T83/707; Y10T83/7264; Y10T83/869; Y10T83/8878; Y10T83/888; Y10T83/8881
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
104 words
A bandsaw blade guiding apparatus comprising: a support arm forming a cavity through which the blade moves; a guide block mounted within said cavity for pivotal movement about an axis extending transversally with respect to the direction of blade movement; an anti-friction member fixed to the bottom surface of said guide block, said anti-friction member having a flat surface contacting the back edge of the blade during a cutting operation; a resilient member interposed between the top surface of said guide block and the base of said cavity; and a through passageway in said guide block between said anti-friction member and said resilient member.
Claim 2
Dependent Claim
104 words
A bandsaw blade guiding apparatus comprising: a support arm forming a cavity through which the blade moves; a guide block mounted within said cavity for pivotal movement about an axis extending transversally with respect to the direction of blade movement; an anti-friction member fixed to the bottom surface of said guide block, said anti-friction member having a flat surface contacting the back edge of the blade during a cutting operation; a resilient member interposed between the top surface of said guide block and the base of said cavity; and a through passageway in said guide block between said anti-friction member and said resilient member.
Claim 3
Dependent Claim
122 words
A bandsaw blade guiding apparatus comprising: a support arm forming a cavity through which said blade moves; a guide block in said cavity, the bottom surface of said guide block being arranged to support the back edge of said blade; a pin fixed relative to said support arm and extending through an opening in said guide block in a direction transverse to the path of said blade, said opening being dimensioned in relation to said pin to accommodate both pivotal and limited translational movement of said guide block relative to said arm; and resilient means interposed between the top surface of said guide block and the base of said cavity for yieldingly opposing the pivotal and translational movement of said guide block.
Claim 4
Dependent Claim
122 words
A bandsaw blade guiding apparatus comprising: a support arm forming a cavity through which said blade moves; a guide block in said cavity, the bottom surface of said guide block being arranged to support the back edge of said blade; a pin fixed relative to said support arm and extending through an opening in said guide block in a direction transverse to the path of said blade, said opening being dimensioned in relation to said pin to accommodate both pivotal and limited translational movement of said guide block relative to said arm; and resilient means interposed between the top surface of said guide block and the base of said cavity for yieldingly opposing the pivotal and translational movement of said guide block.
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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) | 1984-09-21 | 1985-03-23 | 1985-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-21 | 1989-03-23 | 1989-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-21 | 1993-03-23 | 1993-09-22 | $7700.00 | Window Closed / Lapsed |