Patent US556215A successfully refreshed from Google Patents.
US3554070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perforating strip for printing presses
Assignee: Individual
•
Filing: 1968-11-18
•
Granted: 1971-01-12
•
Expires: 1988-11-18
Abstract
Abstract This invention relates to an improved perforating strip for printing presses. More particularly, the invention relates to a device for perforating paper as the paper passes over the impression cylinder of an offset or lithographic press, the device comprising an elongated thin metal strip having a base portion and having upstanding teeth along one edge of the base portion, the teeth being spaced apart from each other and the base portion having notches therein between the teeth so that the base portion is of reduced width at the notches, the notches providing relief of pressure of paper pressing against the teeth and base portion and permitting each of the teeth to flex individually.
Inventors
- 👤 Harry S Boyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:23
CPC Classifications
B; B41; B41G; B41G7/00; Y; Y10; Y10T; Y10T83/00; Y10T83/465; Y10T83/4766; Y10T83/4795; Y10T83/4798; Y10T83/483; Y10T83/4838; Y10T83/4841; Y10T83/929; Y10T83/9372; Y10T83/9408
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
124 words
An improved perforating device for affixing to an impression cylinder of an offset or lithographic press for perforating paper passing through the press comprising an elongated thin metal strip having a base portion of rectangular cross-sectional configuration having flat upper and lower surfaces and paralleled edges, the lower flat surface being adaptable to be affixed to a press impression cylinder such as by adhesive, and having integral upstanding teeth along one edge thereof extending substantially perpendicular to said base portion, said teeth being spaced apart from each other, and said base portion having notches therein between said teeth whereby said base portion is of reduced width at said notches, said notches permitting each of said teeth to flex individually as paper is forced thereagainst.
Claim 2
Dependent Claim
124 words
An improved perforating device for affixing to an impression cylinder of an offset or lithographic press for perforating paper passing through the press comprising an elongated thin metal strip having a base portion of rectangular cross-sectional configuration having flat upper and lower surfaces and paralleled edges, the lower flat surface being adaptable to be affixed to a press impression cylinder such as by adhesive, and having integral upstanding teeth along one edge thereof extending substantially perpendicular to said base portion, said teeth being spaced apart from each other, and said base portion having notches therein between said teeth whereby said base portion is of reduced width at said notches, said notches permitting each of said teeth to flex individually as paper is forced thereagainst.
Claim 3
Dependent Claim
35 words
An improved perforating device according to claim 1 wherein said notches in said base portion between said teeth are of V-shaped configuration, the apex of the V-configuration being spaced from the plane of the teeth.
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |