US3739675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary anvil construction
Assignee: Day International Corp
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Filing: 1972-02-07
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Granted: 1973-06-19
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Expires: 1992-02-07
Abstract
Abstract A rotary anvil construction is provided which comprises a cylindrical anvil and a die-cutting mat attached in position thereagainst with the mat being made of a compressible resilient elastomeric material and having opposite end portions provided with a pair of identical locking flanges which extend within a groove in the anvil wherein the groove is comprised of a pair of spaced holding surfaces. A wedge is provided between the flanges and serves to urge the flanges tightly against the holding surfaces and thereby tighten and lock the mat against the anvil while simultaneously moving associated outer edges of the mat firmly against each other to provide a single line contact therebetween.
Inventors
- 👤 J Duckett
- 👤 A Logan
- 👤 R Ensley
- 👤 L Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:18
CPC Classifications
F; F16; F16C; F16C13/00; B; B21; B21D; B21D28/00; B21D28/02; B21D28/18; B21D28/24; B21D28/36; B23; B23D; B23D33/00; B23D35/00; B26; B26D; B26D7/00; B26D7/20; B26D2007/202; Y; Y10; Y10T; Y10T83/00; Y10T83/465; Y10T83/4766; Y10T83/4795; Y10T83/483; Y10T83/4838; Y10T83/4841; Y10T83/929; Y10T83/9309; Y10T83/9312; Y10T83/9457; Y10T83/9464; Y10T83/9466
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
128 words
In combination: a rotary anvil having an outer substantially cylindrIcal surface and having a pair of spaced holding surfaces extending inwardly from said cylindrical surface and defining opposed walls of a longitudinal groove in said anvil, a diecutting mat made of a compressible resilient elastomeric material attached against said anvil, said mat comprising a main central portion having opposite end portions provided with a pair of identical locking flanges extending from said end portions and being received within said groove, and a wedge between said flanges, said wedge serving to urge said flanges tightly against said holding surfaces and thereby tighten and lock said mat against said anvil while simultaneously moving associated outer edges of said mat firmly against each other to provide a single line contact therebetween.
Claim 2
Dependent Claim
128 words
In combination: a rotary anvil having an outer substantially cylindrIcal surface and having a pair of spaced holding surfaces extending inwardly from said cylindrical surface and defining opposed walls of a longitudinal groove in said anvil, a diecutting mat made of a compressible resilient elastomeric material attached against said anvil, said mat comprising a main central portion having opposite end portions provided with a pair of identical locking flanges extending from said end portions and being received within said groove, and a wedge between said flanges, said wedge serving to urge said flanges tightly against said holding surfaces and thereby tighten and lock said mat against said anvil while simultaneously moving associated outer edges of said mat firmly against each other to provide a single line contact therebetween.
Claim 3
Dependent Claim
17 words
A combination as set forth in claim 1 in which said holding surfaces comprise parallel planar surfaces.
Claim 4
Dependent Claim
67 words
A combination as set forth in claim 1 and further comprising an insert of substantially U-shaped cross-sectional configuration fixed within the peripheral outline of said anvil and extending the full axial dimension thereof, said insert having a pair of surface portions comprising said substantially cylindrical surface and having a pair of planar surfaces each adjoining an associated one of said surface portions and defining said holding surfaces.
Claim 5
Dependent Claim
28 words
A combination as set forth in claim 2 in which said parallel planar holding surfaces diverge toward a longitudinal axis extending through said anvil in a dovetailed manner.
Claim 6
Dependent Claim
57 words
A combination as set forth in claim 4 in which said flanges extend substantially perpendicularly from said end portions and have a height which is less than the depth of said groove so that said wedge positions said flanges against said diverging holding surfaces with minimum contact between the terminal ends of said flanges and said anvil.
Claim 7
Dependent Claim
36 words
A combination as set forth in claim 5 in which said mat has an inside surface and each of said flanges has a channel therein extending across its full width and spaced from said inside surfaces.
Claim 8
Dependent Claim
72 words
A combination as set forth in claim 5 in which said mat has an inside surface and each of said flanges has an outer surface and a channel extending inwardly from its outer surface and across the full width of said mat with said channel being spaced from said inside surface, said channels being arranged in aligned relation with said mat installed around said anvil and cooperating to receive said wedge therewithin.
Claim 9
Dependent Claim
28 words
A combination as set forth in claim 7 in which each of said channels has a substantially semicylindrical surface and said wedge has a substantially circular cross-sectional outline.
Claim 10
Dependent Claim
34 words
A combination as set forth in claim 7 in which said mat has a flexible metal sheet bonded therein, said metal sheet having an exposed surface which defines the inside surface of said mat.
Claim 11
Dependent Claim
38 words
A combination as set forth in claim 7 in which said flanges are made as an integral part of said mat of the same compressible resilient elastomeric material to thereby define said mat as a single piece construction.
Claim 12
Dependent Claim
20 words
A combination as set forth in claim 7 in which each of said flanges has a substantially rectangular cross-sectional outline.
Claim 13
Dependent Claim
69 words
A combination as set forth in claim 1 in which said substantially cylindrical surface of said anvil comprises a substantially right circular cylindrical surface, said mat has a substantially rectangular peripheral outline prior to installation thereof on said anvil, and with said mat installed in position with said wedge between said flanges said associated outer edges of said mat define said single line contact as a rectilinear line contact.
Claim 14
Dependent Claim
41 words
A combination as set forth in claim 7 in which said wedge has an opening extending longitudinally therein from at least one end thereof, said opening being adapted to receive an associated tool therewithin for installation and removal of said wedge.
Claim 15
Dependent Claim
37 words
A combination as set forth in claim 8 in which said wedge is a tubular wedge having a longitudinal centraL opening which is adapted to receive an associated tool therewithin for installation and removal of said wedge.
Claim 16
Dependent Claim
20 words
A combination as set forth in claim 13 in which said holding surfaces comprise an insert fixed in said anvil.
Claim 17
Dependent Claim
25 words
A combination as set forth in claim 7 in which each of said channels has a substantially U-shaped outline when viewed from an end thereof.
Claim 18
Dependent Claim
17 words
A combination as set forth in claim 16 in which said wedge has a noncircular cross-sectional outline.
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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |