Patent US5218949A successfully refreshed from Google Patents.
US5218949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Saws
Assignee: Individual
•
Filing: 1992-05-26
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Granted: 1993-06-15
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Expires: 2012-05-26
Abstract
Abstract A saw comprises a support such as a metallic disc-shaped blank and a working portion bonded to the periphery of the blank. The working portion comprises a mass of abrasive particles held in a polymeric matrix and has a bonding surface through which it is bonded to the support and a working surface. Examples of suitable polymeric matrices are rubber, polyurethane and nylon.
Inventors
- 👤 Peter N. Tomlinson
- 👤 Aulette Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:38
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/20; B24D3/28; B23; B23D; B23D61/00; B23D61/18; B23D61/185; B24D5/00; B24D5/12; B24D5/14; B28; B28D; B28D1/00; B28D1/02; B28D1/12; B28D1/121
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
47 words
A saw comprising a metallic support and a working portion, the working portion comprising a mass of abrasive particles held in a polymeric matrix and having a bonding surface and a working surface, said bonding surface being secured to the metallic support through a metallic bonding layer.
Claim 2
Dependent Claim
47 words
A saw comprising a metallic support and a working portion, the working portion comprising a mass of abrasive particles held in a polymeric matrix and having a bonding surface and a working surface, said bonding surface being secured to the metallic support through a metallic bonding layer.
Claim 3
Dependent Claim
17 words
A saw according to claim 1 wherein the polymeric matrix is selected from rubber, polyurethane and nylon.
Claim 4
Dependent Claim
17 words
A saw according to claim 1 wherein the abrasive particles are uniformly distributed through the polymeric matrix.
Claim 5
Dependent Claim
38 words
A saw according to claim 1 wherein the working portion comprises two zones, a first zone adjacent the working surface being rich in abrasive particles and a second zone, adjacent the bonding surface, being lean in abrasive particles.
Claim 6
Dependent Claim
14 words
A saw according to claim 4 wherein the second zone contains no abrasive particles.
Claim 7
Dependent Claim
25 words
A saw according to claim 1 wherein the concentration of abrasive particles in working portion is in the range 5 to 20 percent by volume.
Claim 8
Dependent Claim
19 words
A saw according to claim 1 wherein the particles have a size in the range 150 to 900 microns.
Claim 9
Dependent Claim
18 words
A saw according to claim 1 wherein the abrasive particles are selected from diamond and cubic boron nitride.
Claim 10
Dependent Claim
34 words
A saw according to claim 1 wherein the support comprises a metallic disc-shaped blank and the working portion comprises a plurality of segments, each of which is bonded to the periphery of the blank.
Claim 11
Dependent Claim
31 words
A saw according to claim 1 wherein the support comprises a metallic disc-shaped blank and the working portion comprises a continuous strip which is bonded to the periphery of the blank.
Claim 12
Dependent Claim
34 words
A saw according to claim 1 wherein the support is a wire and the working portion comprises a plurality of sleeves each of which is secured to the wire through a metallic supporting sleeve.
Claim 13
Dependent Claim
16 words
A saw according to claim 1 wherein the metallic bonding layer is a brass bonding layer.
References Cited (Backward Citations)
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US4856490A
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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) | 1996-06-14 | 1996-12-14 | 1997-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-14 | 2000-12-14 | 2001-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-14 | 2004-12-14 | 2005-06-15 | $7700.00 | Window Closed / Lapsed |