US3590695A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet perforating and joining system
Assignee: JIFFY PACKAGING CORP
•
Filing: 1968-04-04
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Granted: 1971-07-06
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Expires: 1988-04-04
Abstract
Abstract The disclosure relates to perforating and uniting sheets of materials together and particularly paper sheets so that a substantially firm junction is achieved. This is done by forcing into the material while it is being held in position an interrupted sawtooth or serrated arrangement which will result in a junction between the fibrous structure of the various superimposed layers. This is done by passing several layers of the paper material between rollers, one of the rollers having an interrupted perforating member extending longitudinally across the roller but transversely of the direction of movement of the laminations. The perforator is provided on each side with spring pressed holder members and the meeting roller has a recess extending transversely of the moving laminations but longitudinally of the roller to receive the perforating interrupted sawtooth arrangement.
Inventors
- 👤 George Gerard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:13
CPC Classifications
B; B31; B31F; B31F5/00; B31F5/02; B31F5/025; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49833; Y10T83/00; Y10T83/929; Y10T83/9314; Y10T83/9372; Y10T83/9408
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
165 words
A perforating machine for joining together at intervals laminated sheets of fibrous paper strips comprising upper and lower rollers, spaced apart at their most adjacent point where the sheets are passed between the rollers, the upper roller having a thin flat blade mounted transversely therein, perpendicular to the axis of the roller, the outer edge of the blade having spaced groups of sharp triangular teeth, each tooth having a height and projection much greater than the width of each tooth at its base and said teeth being closely spaced in each group and spaces between said group being about twice the width of the width of a tooth and trapezoidal shaped recesses extending transversely across the width of the lower roller and matching and receiving said blade and permitting the blade to rotate within the recess without touching the sides of the recess, the sides of the recess being divergent outwardly and said blade being positioned so as only to partly penetrate the laminated sheets.
Claim 2
Dependent Claim
165 words
A perforating machine for joining together at intervals laminated sheets of fibrous paper strips comprising upper and lower rollers, spaced apart at their most adjacent point where the sheets are passed between the rollers, the upper roller having a thin flat blade mounted transversely therein, perpendicular to the axis of the roller, the outer edge of the blade having spaced groups of sharp triangular teeth, each tooth having a height and projection much greater than the width of each tooth at its base and said teeth being closely spaced in each group and spaces between said group being about twice the width of the width of a tooth and trapezoidal shaped recesses extending transversely across the width of the lower roller and matching and receiving said blade and permitting the blade to rotate within the recess without touching the sides of the recess, the sides of the recess being divergent outwardly and said blade being positioned so as only to partly penetrate the laminated sheets.
Claim 3
Dependent Claim
12 words
The machine of claim 1, said teeth being provided with sharp edges.
Claim 4
Dependent Claim
39 words
The machine of claim 1, and means to cause the laminated sheets to pass under a moving perforating blade and means to cause said blade to partake of a slight angular movement to complete a junction of the sheets.
Claim 5
Dependent Claim
15 words
The machine of claim 1, said sheets being paper laminations of different textures and thickness.
Claim 6
Dependent Claim
19 words
The machine of claim 1, and means to hold said laminated stock against the lower cylinder having the recesses.
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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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |