US3879063A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for simultaneously cutting and heading plastic studs
Assignee: VeloBind Inc
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Filing: 1972-07-12
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Granted: 1975-04-22
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Expires: 1992-07-12
Abstract
Abstract To cut and form heads on a plastic stud or rod, particularly in binding papers together, a rotating tool of special construction is forced against a conical concave cam surface. The tool has a hollow shank with at least one flexible arm extending therefrom, said arm formed with a head, the arm being normally outwardly slanted so that the head is spaced outward of the axis of rotation. Each head has an inward projecting blade at its distal end. The space between the axis and the inner edge of the blade in normal position is sufficient to permit longitudinal movement of the stud inward of the head. The exterior of the distal end of the head is conical, convex and complementary to the cam. As the tool head is brought toward the cam, the head is forced inward causing the blade to sever the stud. Simultaneously the distal end of the head as it spins splays the severed end of the stud, forming a rivet head, which holds the papers in place. In a preferred embodiment there are two cooperating heads on the tool.
Inventors
- 👤 Man Heiko T De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:26
CPC Classifications
B; B42; B42B; B42B5/00; B26; B26D; B26D1/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
224 words
A method of cutting and heading a thermo-plastic stud comprising providing a tool having a proximal shank, means on said shank cooperable with external means for revolving said shank about an axis of rotation, at least one arm of resilient material extending distally of said shank and normally slanting distally outwardly, and a head on the distal end of said arm, said head having an external conical cam surface, a transverse distal end surface, and a blade on the inner edge of said head, revolving said tool about said axis of rotation, providing a second conical cam surface complementary to said first cam surface on said tool, moving said conical surfaces toward each other along said axis of rotation, said stud initially extending through a hole in said second cam surface and extending along the axis of said tool inward of said head and being fixed in position relative to said cam surface said head being forced inward of said axis as said cam surface and said tool move toward each other to simultaneously cut off said stud and deforming the severed end of said stud by splaying said end outwardly and axially to form a rivet-like head, said arm being resilient enough so that said head bends inward and rigid enough so that said blade cuts said stud and forms said rivet-like head.
Claim 2
Independent Claim
224 words
A method of cutting and heading a thermo-plastic stud comprising providing a tool having a proximal shank, means on said shank cooperable with external means for revolving said shank about an axis of rotation, at least one arm of resilient material extending distally of said shank and normally slanting distally outwardly, and a head on the distal end of said arm, said head having an external conical cam surface, a transverse distal end surface, and a blade on the inner edge of said head, revolving said tool about said axis of rotation, providing a second conical cam surface complementary to said first cam surface on said tool, moving said conical surfaces toward each other along said axis of rotation, said stud initially extending through a hole in said second cam surface and extending along the axis of said tool inward of said head and being fixed in position relative to said cam surface said head being forced inward of said axis as said cam surface and said tool move toward each other to simultaneously cut off said stud and deforming the severed end of said stud by splaying said end outwardly and axially to form a rivet-like head, said arm being resilient enough so that said head bends inward and rigid enough so that said blade cuts said stud and forms said rivet-like head.
Claim 3
Independent Claim
224 words
A method of cutting and heading a thermo-plastic stud comprising providing a tool having a proximal shank, means on said shank cooperable with external means for revolving said shank about an axis of rotation, at least one arm of resilient material extending distally of said shank and normally slanting distally outwardly, and a head on the distal end of said arm, said head having an external conical cam surface, a transverse distal end surface, and a blade on the inner edge of said head, revolving said tool about said axis of rotation, providing a second conical cam surface complementary to said first cam surface on said tool, moving said conical surfaces toward each other along said axis of rotation, said stud initially extending through a hole in said second cam surface and extending along the axis of said tool inward of said head and being fixed in position relative to said cam surface said head being forced inward of said axis as said cam surface and said tool move toward each other to simultaneously cut off said stud and deforming the severed end of said stud by splaying said end outwardly and axially to form a rivet-like head, said arm being resilient enough so that said head bends inward and rigid enough so that said blade cuts said stud and forms said rivet-like head.
Claim 4
Independent Claim
224 words
A method of cutting and heading a thermo-plastic stud comprising providing a tool having a proximal shank, means on said shank cooperable with external means for revolving said shank about an axis of rotation, at least one arm of resilient material extending distally of said shank and normally slanting distally outwardly, and a head on the distal end of said arm, said head having an external conical cam surface, a transverse distal end surface, and a blade on the inner edge of said head, revolving said tool about said axis of rotation, providing a second conical cam surface complementary to said first cam surface on said tool, moving said conical surfaces toward each other along said axis of rotation, said stud initially extending through a hole in said second cam surface and extending along the axis of said tool inward of said head and being fixed in position relative to said cam surface said head being forced inward of said axis as said cam surface and said tool move toward each other to simultaneously cut off said stud and deforming the severed end of said stud by splaying said end outwardly and axially to form a rivet-like head, said arm being resilient enough so that said head bends inward and rigid enough so that said blade cuts said stud and forms said rivet-like head.
Claim 5
Independent Claim
277 words
A method of binding a book from pages having spaced first holes along one margin comprising providing a first strip of plastic having a plurality of studs spaced apart the same distance as said first holes and a second strip formed with second holes spaced apart the same distance as said studs, inserting said studs through the first holes and then the second holes, forcing said strips toward each other with the pages clamped between said strips, supporting said second strip on a support surface having conical cam surfaces formed with third holes aligned with said studs, said studs protruding beyond said third holes and being fixed in position relative to said cam surfaces; providing for each stud a tool, said tool comprising a proximal shank, means on said shank cooperable with external means for revolving said shank, at least one arm of resilient material extending distally of said shank and normally slanting distally outwardly, and a head on the distal end of said arm, said head having an external conical cam surface, a transverse distal end surface, and a blade on the inner edge of said head, said stud initially extending through said third hole and radially inward of said head, revolving said tool and moving said tool and said cam surface relatively toward each other thereby simultaneously forcing said blade to cut off said stud and deforming the severed end of said stud by splaying said end outwardly and axially toward said second strip to form a rivet-like head, said arm being resilient enough so that said head bends inward and rigid enough so that said blade cuts said stud and forms said rivet-like head.
Claim 6
Independent Claim
277 words
A method of binding a book from pages having spaced first holes along one margin comprising providing a first strip of plastic having a plurality of studs spaced apart the same distance as said first holes and a second strip formed with second holes spaced apart the same distance as said studs, inserting said studs through the first holes and then the second holes, forcing said strips toward each other with the pages clamped between said strips, supporting said second strip on a support surface having conical cam surfaces formed with third holes aligned with said studs, said studs protruding beyond said third holes and being fixed in position relative to said cam surfaces; providing for each stud a tool, said tool comprising a proximal shank, means on said shank cooperable with external means for revolving said shank, at least one arm of resilient material extending distally of said shank and normally slanting distally outwardly, and a head on the distal end of said arm, said head having an external conical cam surface, a transverse distal end surface, and a blade on the inner edge of said head, said stud initially extending through said third hole and radially inward of said head, revolving said tool and moving said tool and said cam surface relatively toward each other thereby simultaneously forcing said blade to cut off said stud and deforming the severed end of said stud by splaying said end outwardly and axially toward said second strip to form a rivet-like head, said arm being resilient enough so that said head bends inward and rigid enough so that said blade cuts said stud and forms said rivet-like head.
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) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |