US3750284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable power saw apparatus
Assignee: Individual
•
Filing: 1972-01-03
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Granted: 1973-08-07
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Expires: 1992-01-03
Abstract
Abstract A saw generally of the keyhole or saber saw variety. The saw blade comprises an endless band driven in one direction and having a number of cutting members which are spaced apart from the plane of the band. The saw band travels along a channel, and the cutting members extend outside the channel for cutting exposure to a work piece. The saw can be connected with a conventional portable drill for motive power, or alternatively can be provided with a self-contained motor.
Inventors
- 👤 W Swift
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:23
CPC Classifications
B; B27; B27B; B27B33/00; B27B33/02; B27B33/06; B23; B23D; B23D53/00; B23D53/12; B23D57/00; B23D57/0076; B27B13/00; B27B13/10; B27F; B27F5/00; B27F5/02; B27F5/12; Y; Y10; Y10T; Y10T83/00; Y10T83/707; Y10T83/7264; Y10T83/929; Y10T83/9317
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
178 words
Saw apparatus comprising: housing means; blade guide means extending from said housing means to terminate at a spaced location therefrom; saw blade channel means formed along said blade guide means; saw blade means disposed for sliding movement along said channel means of said blade guide means; said saw blade means comprising a substantially flat endless flexible band member; said channel means comprising a saw blade support surface forming an elongate slot defined by a blade support surface and by means extending from said blade surface to define wall means of said channel means; a plurality of cutting members carried by said saw blade means; each of said cutting members having a cutting edge disposed in spaced apart relation from said band member of said saw blade means to extend said cutting edge outside of said channel means for cutting exposure to material positioned adjacent to said blade guide means; and motive means disposed in said housing means in operative engagement with said saw blade means to impart sliding movement of said saw blade means along said channel means.
Claim 2
Dependent Claim
178 words
Saw apparatus comprising: housing means; blade guide means extending from said housing means to terminate at a spaced location therefrom; saw blade channel means formed along said blade guide means; saw blade means disposed for sliding movement along said channel means of said blade guide means; said saw blade means comprising a substantially flat endless flexible band member; said channel means comprising a saw blade support surface forming an elongate slot defined by a blade support surface and by means extending from said blade surface to define wall means of said channel means; a plurality of cutting members carried by said saw blade means; each of said cutting members having a cutting edge disposed in spaced apart relation from said band member of said saw blade means to extend said cutting edge outside of said channel means for cutting exposure to material positioned adjacent to said blade guide means; and motive means disposed in said housing means in operative engagement with said saw blade means to impart sliding movement of said saw blade means along said channel means.
Claim 3
Dependent Claim
64 words
Apparatus as in claim 1, wherein: at least some of said cutting members having a portion of said cutting edge offset to extend across said wall means and disposed in a plane which is spaced apart from and substantially parallel to said band member, so that said cutting member portions cut a path of width greater than the width of said blade guide means.
Claim 4
Dependent Claim
74 words
Apparatus as in claim 1, wherein: said motive means comprises drive wheel means in driving engagement with said saw blade means; said saw blade means having a plurality of drive engagement means spaced at periodically repetitive locations along said band member; and said drive wheel means having a peripheral region including a plurality of drive means spaced along said peripheral region for driving engagement with said drive engagement means of said saw blade means.
Claim 5
Dependent Claim
64 words
Apparatus as in claim 1, wherein: the width of said band member is less than the width of said channel means; and at least some of said cutting members extend out of and laterally of said elongate slot to define a saw blade means width which is greater than the width of said band member and greater than the width of said channel means.
Claim 6
Dependent Claim
115 words
Apparatus as in claim 4, wherein: said blade guide means comprises an elongate member having a proximal end disposed adjacent to said housing means and a distal end spaced apart from said housing means; said channel means extending along a first portion of said elongate member from said proximal end to said distal end and further extending along a second portion of said elongate member from said distal end to said proximal end, said first portion and said second portion being in spaced apart relation to each other; and means disposed at said distal end of said elongate member providing saw blade sliding movement interconnection between said first and second portions of said channel means.
Claim 7
Dependent Claim
138 words
Apparatus as in claim 5, further comprising: drive wheel means in driving engagement with said band member and having a peripheral region including a plurality of drive means spaced along said peripheral region for driving engagement with said band member; said drive wheel means having a diameter substantially greater than the spacing between said first and second portion of said elongate member; at least one idler wheel means positioned between said drive wheel means and said proximal end of said elongate member; said idler wheel means having a peripheral region disposed to be substantially tangentially aligned with one of said first and second portion of said channel means; and said band member being disposed in engagement with said peripheral region of said idler wheel means to be in substantial alignment with said one portion of said channel means.
Claim 8
Dependent Claim
68 words
Apparatus as in claim 6, wherein: said peripheral region of said idler wheel means comprises a plurality of spacer members separated from each other along the circumference of the idler wheel means by undercut regions of sufficient depth to receive said cutting members extending from said saw blade means; and each of said spacer members has band member engaging means disposed thereon for engagement with said band member.
Claim 9
Dependent Claim
29 words
Apparatus as in claim 5, further comprising: adjustable means interconnecting said elongated member and said housing means to vary the spacing between said housing means and said distal end.
Claim 10
Dependent Claim
109 words
Apparatus as in claim 1, wherein: said motive means includes a drive member extending from said housing means for connection with a drive motor; first pair of spaced apart connective members extending from attachment to said housing means to a spaced apart location therefrom; second pair of spaced apart connective members selectively interconnected with said first pair of connective members to enable said second pair of connective members to terminate at a selectively adjustable distance from said housing means; and engagement means connected to at least one of said pairs of spaced apart connective members and positioned there-between to holdingly engage a drive motor connected to said coupling means.
Claim 11
Dependent Claim
57 words
Apparatus as in claim 9, further comprising: support means extending between at least one pair of said connective members to form a collar for supporting the drive motor; and each of said second pair of connective members having a portion extending rearwardly from said selective interconnection and into engagement with an exterior location on the drive motor.
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |