Patent US3869950A successfully refreshed from Google Patents.
US3869950A
Expired / Lapsed
US
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Apparatus for transverse cutting or perforating a continuously advancing web
Assignee: HERVE FILS PAPET SENTIER
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Filing: 1973-03-07
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Granted: 1975-03-11
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Expires: 1993-03-07
Abstract
Abstract In an apparatus for repetitively cutting or perforating, in a transverse direction, a continuously advancing web by means of a rotating blade that cooperates with a stationary counterblade having a cutting edge that lies in the plane of motion of the web; the counterblade being inclined with respect to the axis of rotation of the rotating blade by an angle of approximately 2* maximum, the angular orientation of the apparatus with respect to the direction of motion of the paper can be varied precisely by micrometric means in order to compensate for intentional differences between the tangential speed of the rotating blade and the translational speed of the web.
Inventors
- 👤 Arthur Bienvenu Dalla Serra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:28
CPC Classifications
B; B26; B26D; B26D1/00; B26D1/01; B26D1/12; B26D1/25; B26D1/34; B26D1/38; B26D1/385; Y; Y10; Y10T; Y10T83/00; Y10T83/465; Y10T83/4766; Y10T83/4795; Y10T83/4824; Y10T83/4847
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
39 words
An apparatus for performing periodic, sequential penetrations in a continuously advancing material web, comprising: a. a supporting frame including first drive means for the material web; b. a transversely extending assembly pivotally mounted on said supporting frame and including:
Claim 2
Independent Claim
39 words
An apparatus for performing periodic, sequential penetrations in a continuously advancing material web, comprising: a. a supporting frame including first drive means for the material web; b. a transversely extending assembly pivotally mounted on said supporting frame and including:
Claim 3
Dependent Claim
4 words
laterally associated bracket members;
Claim 4
Dependent Claim
4 words
laterally associated bracket members;
Claim 5
Independent Claim
252 words
An apparatus for performing periodic, sequential penetrations in a continuously advancing material web, comprising: a. a supporting frame including first drive means for the material web; b. a transversely extending assembly pivotally mounted on said supporting frame and including: 1. laterally associated bracket members; 2. a straight shaft extending between and associated with the bracket members, said shaft being positioned parallel to the plane of the material web and further having an axis of rotation and provided with second drive means; 3. a straight-edged rotatable cutter blade having a cutting edge and mounted on and rotatable about said shaft in parallelism to said axis of rotation so that, when rotated, the cutting edge generates a rectangular cylinder of revolution; and 4. a flexible straight-edged counterblade having a cutting edge including terminal end points and being held in its operative posiTion solely by attachment of said end points to said bracket members and at an angle with respect to said axis of rotation and in such a position that at least said two end points of the cutting edge of the counterblade always lie on the surface of said cylinder of revolution, that portion of said counterblade between said end points being free of support; whereby during operation of the apparatus, the cutting edge of the counterblade cooperates with the cutting edge of the rotatable blade to perform the periodic, sequential penetrations of the material web and the flexibility of the counterblade alone permits the passage of the rotating blade beyond the counterblade.
Claim 6
Independent Claim
252 words
An apparatus for performing periodic, sequential penetrations in a continuously advancing material web, comprising: a. a supporting frame including first drive means for the material web; b. a transversely extending assembly pivotally mounted on said supporting frame and including: 1. laterally associated bracket members; 2. a straight shaft extending between and associated with the bracket members, said shaft being positioned parallel to the plane of the material web and further having an axis of rotation and provided with second drive means; 3. a straight-edged rotatable cutter blade having a cutting edge and mounted on and rotatable about said shaft in parallelism to said axis of rotation so that, when rotated, the cutting edge generates a rectangular cylinder of revolution; and 4. a flexible straight-edged counterblade having a cutting edge including terminal end points and being held in its operative posiTion solely by attachment of said end points to said bracket members and at an angle with respect to said axis of rotation and in such a position that at least said two end points of the cutting edge of the counterblade always lie on the surface of said cylinder of revolution, that portion of said counterblade between said end points being free of support; whereby during operation of the apparatus, the cutting edge of the counterblade cooperates with the cutting edge of the rotatable blade to perform the periodic, sequential penetrations of the material web and the flexibility of the counterblade alone permits the passage of the rotating blade beyond the counterblade.
Claim 7
Dependent Claim
36 words
a straight shaft extending between and associated with the bracket members, said shaft being positioned parallel to the plane of the material web and further having an axis of rotation and provided with second drive means;
Claim 8
Dependent Claim
36 words
a straight shaft extending between and associated with the bracket members, said shaft being positioned parallel to the plane of the material web and further having an axis of rotation and provided with second drive means;
Claim 9
Dependent Claim
52 words
An apparatus as claimed in claim 1, wherein at least one of the cooperating cutter means has a longitudinal extent of lesser length than the width of the material to be severed to thereby retain parallel uncut areas on oppositely disposed edges of the material to thereby sustain continuous, uninterrupted travel thereof.
Claim 10
Dependent Claim
23 words
An apparatus as claimed in claim 1, wherein movement of the counterblade means relative to its longitudinal extent is limited by adjustable means.
Claim 11
Dependent Claim
38 words
a straight-edged rotatable cutter blade having a cutting edge and mounted on and rotatable about said shaft in parallelism to said axis of rotation so that, when rotated, the cutting edge generates a rectangular cylinder of revolution; and
Claim 12
Dependent Claim
38 words
a straight-edged rotatable cutter blade having a cutting edge and mounted on and rotatable about said shaft in parallelism to said axis of rotation so that, when rotated, the cutting edge generates a rectangular cylinder of revolution; and
Claim 13
Dependent Claim
31 words
An apparatus as claimed in claim 3, wherein the adjustable means limits the degree of local bending of said counterblade means to a predetermined value, said adjustable means including plural elements.
Claim 14
Dependent Claim
131 words
a flexible straight-edged counterblade having a cutting edge including terminal end points and being held in its operative posiTion solely by attachment of said end points to said bracket members and at an angle with respect to said axis of rotation and in such a position that at least said two end points of the cutting edge of the counterblade always lie on the surface of said cylinder of revolution, that portion of said counterblade between said end points being free of support; whereby during operation of the apparatus, the cutting edge of the counterblade cooperates with the cutting edge of the rotatable blade to perform the periodic, sequential penetrations of the material web and the flexibility of the counterblade alone permits the passage of the rotating blade beyond the counterblade.
Claim 15
Dependent Claim
131 words
a flexible straight-edged counterblade having a cutting edge including terminal end points and being held in its operative posiTion solely by attachment of said end points to said bracket members and at an angle with respect to said axis of rotation and in such a position that at least said two end points of the cutting edge of the counterblade always lie on the surface of said cylinder of revolution, that portion of said counterblade between said end points being free of support; whereby during operation of the apparatus, the cutting edge of the counterblade cooperates with the cutting edge of the rotatable blade to perform the periodic, sequential penetrations of the material web and the flexibility of the counterblade alone permits the passage of the rotating blade beyond the counterblade.
Claim 16
Dependent Claim
39 words
An apparatus as claimed in claim 1, wherein the rotatable cutter means has a tangential speed relative to the speed of travel of the advancing material which may vary from 0.5 to 10 and preferably from 2 to 8.
Claim 17
Dependent Claim
54 words
An apparatus as claimed in claim 1, wherein the rotatable cutter means and the counterblade means from an angle which has a value in radians at most equal to (10 2 Square Root 56R/L), R being the radius of rotation of the rotary cutter and L being said longitudinal extent of the counterblade means.
Claim 18
Dependent Claim
40 words
An apparatus as claimed in claim 6, wherein the angle between the counterblade and the line perpendicular to the direction of motion of the continuously advancing material is effectively equal to Alpha /3 and is approximately equal to 0.003 radians.
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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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |