US4388848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutter ring and method of making same
Assignee: Q Corp
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Filing: 1981-05-04
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Granted: 1983-06-21
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Expires: 2001-05-04
Abstract
Abstract A cutter ring for use in trimming printed circuit board leads and a method of forming the ring is the subject of this invention. The cutter member is of annular configuration and is provided with a central hub portion surrounding an aperture. The cutter member itself is formed from a hardened sintered carbide which can only be shaped through a prolonged grinding operation. A molded cap is formed over the hub portion to present a surface which is to be received within a tool holder such as an arbor. The molded cap is characterized by being formed from a relatively soft workable material which can be shaped through a machining operation.
Inventors
- 👤 Eugene V. Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:15
CPC Classifications
H; H05; H05K; H05K13/00; H05K13/04; H05K13/0473; B; B23; B23P; B23P15/00; B23P15/28; B23P15/40; B26; B26D; B26D7/00; B26D7/26; B26D7/2614; B26D7/2621; Y; Y10; Y10T; Y10T83/00; Y10T83/929; Y10T83/9372; Y10T83/9377; Y10T83/9379; Y10T83/9403; Y10T83/9457; Y10T83/9464
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
112 words
A cutter ring for use in trimming printed circuit board leads and adapted to be held within an arbor by a retainer, said cutter ring comprising: a cutter member having a central hub portion surrounding an aperture, said cutter member being characterized by being formed from a hardened material which can only be shaped through a prolonged grinding operation; and a molded cap formed over said hub portion to present a surface to be received within said arbor, said molded cap being characterized by being formed from a relatively workable material which can be shaped through a machining operation, whereby said molded cap may be machined to the configuration of said arbor.
Claim 2
Dependent Claim
112 words
A cutter ring for use in trimming printed circuit board leads and adapted to be held within an arbor by a retainer, said cutter ring comprising: a cutter member having a central hub portion surrounding an aperture, said cutter member being characterized by being formed from a hardened material which can only be shaped through a prolonged grinding operation; and a molded cap formed over said hub portion to present a surface to be received within said arbor, said molded cap being characterized by being formed from a relatively workable material which can be shaped through a machining operation, whereby said molded cap may be machined to the configuration of said arbor.
Claim 3
Dependent Claim
32 words
A cutter ring as set forth in claim 1, wherein said cap extends along the top of said hub portion, down into said aperture and along the side of said hub portion.
Claim 4
Dependent Claim
18 words
A cutter ring as set forth in claim 2, wherein said cap is comprised of a resinous material.
Claim 5
Dependent Claim
18 words
A cutter ring as set forth in claim 3 wherein said cutter member is comprised of sintered carbide.
Claim 6
Dependent Claim
157 words
A cutter assembly for use in trimming printed circuit board leads, said assembly comprising: an arbor having a threaded bore and a recessed area for receiving a cutter member; a cutter member having a central hub portion surrounding an aperture and being characterized by being formed from a hardened material which can only be shaped through a prolonged grinding operation, said aperture being adapted to be aligned with said threaded bore; a molded cap formed over said hub portion to present a surface to be received within said arbor, said molded cap being characterized by being formed from a relatively workable material which can be shaped through a machining operation, whereby said molded cap may be machined to the configuration of said arbor; retainer means received by said cutter member and aligned with said aperture for holding said cutter member within said recessed area; and threaded means for engagement with said retainer means and said threaded bore.
Claim 7
Dependent Claim
157 words
A cutter assembly for use in trimming printed circuit board leads, said assembly comprising: an arbor having a threaded bore and a recessed area for receiving a cutter member; a cutter member having a central hub portion surrounding an aperture and being characterized by being formed from a hardened material which can only be shaped through a prolonged grinding operation, said aperture being adapted to be aligned with said threaded bore; a molded cap formed over said hub portion to present a surface to be received within said arbor, said molded cap being characterized by being formed from a relatively workable material which can be shaped through a machining operation, whereby said molded cap may be machined to the configuration of said arbor; retainer means received by said cutter member and aligned with said aperture for holding said cutter member within said recessed area; and threaded means for engagement with said retainer means and said threaded bore.
Claim 8
Dependent Claim
31 words
An assembly as set forth in claim 5, wherein said cap extends along the top of said hub portion, down into said aperture and along the side of said hub portion.
Claim 9
Dependent Claim
17 words
An assembly as set forth in claim 6, wherein said cap is comprised of a resinous material.
Claim 10
Dependent Claim
17 words
An assembly as set forth in claim 7 wherein said cutter member is comprised of sintered carbide.
Claim 11
Independent Claim
134 words
A method of forming a cutter ring for use in trimming printed circuit board leads wherein the cutter ring is adapted to be held within a recessed arbor face by a retainer, said method comprising the steps of: providing a cutter ring blank having a cutting edge, an aperture and a raised central hub, said blank being characterized by being formed from a hardened material which can only be shaped through a prolonged grinding operation; molding a cap over said raised central hub, said cap extending across the hub, along the side of the hub and into said aperture, said cap being characterized by being formed from a relatively workable material which can be shaped through a machining operation; and machining said cap to conform the configuration to the configuration of said arbor face.
Claim 12
Independent Claim
134 words
A method of forming a cutter ring for use in trimming printed circuit board leads wherein the cutter ring is adapted to be held within a recessed arbor face by a retainer, said method comprising the steps of: providing a cutter ring blank having a cutting edge, an aperture and a raised central hub, said blank being characterized by being formed from a hardened material which can only be shaped through a prolonged grinding operation; molding a cap over said raised central hub, said cap extending across the hub, along the side of the hub and into said aperture, said cap being characterized by being formed from a relatively workable material which can be shaped through a machining operation; and machining said cap to conform the configuration to the configuration of said arbor face.
Claim 13
Dependent Claim
22 words
A method as set forth in claim 9 wherein said step of molding a cap comprises molding a cap of resinous material.
Claim 14
Dependent Claim
23 words
A method as set forth in claim 9, wherein said step of providing a cutter ring comprises providing a ring of sintered carbide.
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) | 1986-06-20 | 1986-12-20 | 1987-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-20 | 1990-12-20 | 1991-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-20 | 1994-12-20 | 1995-06-21 | $7700.00 | Window Closed / Lapsed |