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US3577822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removable freewheeling resilient cover for rotary anvil
Assignee: Centenary Central Inc
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Filing: 1969-04-16
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Granted: 1971-05-04
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Expires: 1989-04-16
Abstract
Abstract This is a freewheeling resilient rotary diecutting anvil cover comprising a flexible member of one or multiple pieces releasably secured together along a generally axial line or lines including one or more annular ribs on the inner surface for disposition in annular grooves in the cylindrical supporting base in which at least the portions of the rib or ribs leading to the releasable connection or connections are of split T-cross section and collapsible to relieve binding and to permit installation and removal from a head, or the like, without removing the head. In a modification, a cover lengthened by use can be cut to smaller size. Another modification employs a metal plate or plates to reduce lengthening.
Inventors
- 👤 Louis E Sauer
- 👤 Robert W Sauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:05
CPC Classifications
B; B26; B26D; B26D7/00; B26D7/20; B26D7/204; 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
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
131 words
A cover for a rotary anvil comprising at least one elongated resilient flexible sheet adapted to be mounted on a rotary anvil for relative free annular movement therebetween, at least one annular rib on the inner side of said sheet adapted to engage in an annular circumferential groove of substantially inverted Tcross section in an anvil, said rib being of a cross section at least in the area of engaging sheet ends which, when in an inverted T-groove, strongly resists radial movement outwardly of that portion in the area of engaging sheet ends of the cover from an anvil on which it is mounted yet yields to permit substantially radial mounting of said portion of the cover on and its removal from an anvil without removing the anvil from its support.
Claim 2
Dependent Claim
131 words
A cover for a rotary anvil comprising at least one elongated resilient flexible sheet adapted to be mounted on a rotary anvil for relative free annular movement therebetween, at least one annular rib on the inner side of said sheet adapted to engage in an annular circumferential groove of substantially inverted Tcross section in an anvil, said rib being of a cross section at least in the area of engaging sheet ends which, when in an inverted T-groove, strongly resists radial movement outwardly of that portion in the area of engaging sheet ends of the cover from an anvil on which it is mounted yet yields to permit substantially radial mounting of said portion of the cover on and its removal from an anvil without removing the anvil from its support.
Claim 3
Dependent Claim
39 words
The combination of claim 1 in which said rib cross section having resistance to radial removal is a collapsible split-T permitting said removal and mounting of the cover on an anvil having an annular groove of inverted T-cross section.
Claim 4
Dependent Claim
36 words
The combination of claim 2 in which the free ends of said flexible sheet include intermeshing fingers, said fingers formed to permit severing of end portions to compensate for lengthening of said flexible sheet in use.
Claim 5
Dependent Claim
26 words
The combination of claim 2 in which the free ends of said flexible sheet include interlocking fingers resisting centrifugal loss of the cover from an anvil.
Claim 6
Dependent Claim
36 words
The combination of claim 1 in which the free ends of said flexible sheet include intermeshing fingers, said fingers formed to permit severing of end portions to compensate for lengthening of said flexible sheEt in use.
Claim 7
Dependent Claim
30 words
The combination of claim 5 in which thin substantially nonstretchable plates are bonded to the bottom of said flexible sheet for substantially preventing elongation of said flexible sheet in use.
Claim 8
Dependent Claim
30 words
The combination of claim 1 in which thin substantially nonstretchable plates are bonded to the bottom of said flexible sheet for substantially preventing elongation of said flexible sheet in use.
Claim 9
Dependent Claim
137 words
A rotary anvil for use in rotary diecutting of paperboard comprising, in combination, an annular base, at least one annular groove in the periphery of said base of substantially inverted T-cross section, a cover comprising at least one elongated resilient flexible sheet mounted on said base for relative free annular movement therebetween, at least one annular rib on the inner side of said sheet engaged in said annular groove of said base, said rib being of a cross section at least in the area of engaging sheet ends which strongly resists radial movement outwardly of that portion in the area of engaging sheet ends of the cover from the base yet yields to permit substantially radial mounting of said portion of the cover on and its removal from said base without removing the anvil from its support.
Claim 10
Dependent Claim
137 words
A rotary anvil for use in rotary diecutting of paperboard comprising, in combination, an annular base, at least one annular groove in the periphery of said base of substantially inverted T-cross section, a cover comprising at least one elongated resilient flexible sheet mounted on said base for relative free annular movement therebetween, at least one annular rib on the inner side of said sheet engaged in said annular groove of said base, said rib being of a cross section at least in the area of engaging sheet ends which strongly resists radial movement outwardly of that portion in the area of engaging sheet ends of the cover from the base yet yields to permit substantially radial mounting of said portion of the cover on and its removal from said base without removing the anvil from its support.
Claim 11
Dependent Claim
31 words
The combination of claim 8 in which said rib cross section having resistance to radial removal is a collapsible split-T, permitting said removal and mounting of the cover on said base.
Claim 12
Dependent Claim
37 words
The combination of claim 9 in which the free ends of said flexible sheet include intermeshing fingers, said fingers being formed to permit severing of end portions to compensate for lengthening of said flexible sheet in use.
Claim 13
Dependent Claim
28 words
The combination of claim 8 and including thin substantially nonstretchable plates bonded to the bottom of said flexible sheet substantially preventing spreading of said flexible sheet in use.
Claim 14
Dependent Claim
133 words
A cover for a rotary anvil comprising at least one elongated resilient flexible sheet adapted to be mounted on a rotary anvil for relative free annular movement therebetween, at least one annular rib on the inner side of said sheet adapted to engage in an annular circumferential groove of substantially inverted T-cross section in an anvil, said rib being of a cross section at least in the area of engaging sheet ends which, when in an inverted T-groove, strongly resists radial movement outwardly of the cover from an anvil on which it is mounted yet permits mounting of the cover on and its removal from an anvil without removing the anvil from its support, the free ends of said flexible sheet including interlocking fingers resisting centrifugal loss of the cover from an anvil.
Claim 15
Dependent Claim
133 words
A cover for a rotary anvil comprising at least one elongated resilient flexible sheet adapted to be mounted on a rotary anvil for relative free annular movement therebetween, at least one annular rib on the inner side of said sheet adapted to engage in an annular circumferential groove of substantially inverted T-cross section in an anvil, said rib being of a cross section at least in the area of engaging sheet ends which, when in an inverted T-groove, strongly resists radial movement outwardly of the cover from an anvil on which it is mounted yet permits mounting of the cover on and its removal from an anvil without removing the anvil from its support, the free ends of said flexible sheet including interlocking fingers resisting centrifugal loss of the cover from an anvil.
Claim 16
Dependent Claim
150 words
A rotary anvil for use in rotary diecutting of paperboard comprising, in combination, an annular base, at least one annular groove in the periphery of said base of substantially inverted T-cross section, a cover comprising at least one elongated resilient flexible sheet mounted on said base for relative free annular movement therebetween, at least one annular rib on the inner side of said sheet engaged in said annular groove of said base, said rib being of a cross section at least in the area of engaging sheet ends which strongly resists radial movement outwardly of the cover from the base yet permits mounting of the cover on and its removal from said base without removing the anvil from its support, the free ends of said flexible sheet including intermeshing fingers, said fingers being formed to permit severing of end portions to compensate for lengthening of said flexible sheet in use.
Claim 17
Dependent Claim
150 words
A rotary anvil for use in rotary diecutting of paperboard comprising, in combination, an annular base, at least one annular groove in the periphery of said base of substantially inverted T-cross section, a cover comprising at least one elongated resilient flexible sheet mounted on said base for relative free annular movement therebetween, at least one annular rib on the inner side of said sheet engaged in said annular groove of said base, said rib being of a cross section at least in the area of engaging sheet ends which strongly resists radial movement outwardly of the cover from the base yet permits mounting of the cover on and its removal from said base without removing the anvil from its support, the free ends of said flexible sheet including intermeshing fingers, said fingers being formed to permit severing of end portions to compensate for lengthening of said flexible sheet in use.
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) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |