US3735659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perforating apparatus
Assignee: Individual
•
Filing: 1971-06-17
•
Granted: 1973-05-29
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Expires: 1991-06-17
Abstract
Abstract A perforating apparatus for photographic prints or other sheet material including a platen over which the material can be moved and against which a cam-actuated perforating die can be pressed through cyclical actuation to perform the perforating function.
Inventors
- 👤 H Button
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:17
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/38; B26F1/40; B26D; B26D5/00; B26D5/08; B26D5/16; B26F1/18; G; G03; G03D; G03D15/00; G03D15/04; Y; Y10; Y10T; Y10T83/00; Y10T83/444; Y10T83/4443; Y10T83/4448; Y10T83/4647; Y10T83/869; Y10T83/8691; Y10T83/8759; Y10T83/8761; Y10T83/8762; Y10T83/8776; Y10T83/8785; Y10T83/8821; Y10T83/8841; Y10T83/8843; Y10T83/929; Y10T83/9314
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
110 words
Apparatus for perforating sheet material which comprises a platen adapted to support the sheet material, a perforating die supported for movement toward and away from said platen, cam means operable to engage said die to positively press the same against said platen to effect perforation of the sheet material thereon, a plurality of springs resiliently urging said perforating die away from said platen, said cam means including a pair of shafts supported in parallel relation adjacent said perforating die, each shaft having a spaced pair of cams at like circumferential positions thereon, and means for simultaneously rotating said cam shafts in opposite rotative directions and at the same rotative speeds.
Claim 2
Dependent Claim
110 words
Apparatus for perforating sheet material which comprises a platen adapted to support the sheet material, a perforating die supported for movement toward and away from said platen, cam means operable to engage said die to positively press the same against said platen to effect perforation of the sheet material thereon, a plurality of springs resiliently urging said perforating die away from said platen, said cam means including a pair of shafts supported in parallel relation adjacent said perforating die, each shaft having a spaced pair of cams at like circumferential positions thereon, and means for simultaneously rotating said cam shafts in opposite rotative directions and at the same rotative speeds.
Claim 3
Dependent Claim
38 words
Perforating apparatus according to claim 1 which comprises drive means for said shafts, and clutch means operable to connect said drive means to said cam shaft rotating means to effect a single revolution of each of said shafts.
Claim 4
Dependent Claim
38 words
Perforating apparatus according to claim 2 wherein said clutch means includes a rotary dog clutch spring-urged into clutching engagement and a solenoid-actuated clutch releasing member disposed at a predetermined circumferential position relative to rotation of said dog clutch.
Claim 5
Dependent Claim
27 words
Perforating apparatus according to claim 3 which comprises means operable to energize said solenoid-actuated clutch releasing member to effect a single perforating operation of said perforating die.
Claim 6
Dependent Claim
92 words
Apparatus for perforating sheet material which comprises a platen adapted to support the sheet material, a perforating die supported for movement toward and away from said platen, cam means operable to engage said die to positively press the same against said platen to effect perforation of the sheet material thereon, said cam means including a pair of shafts supported in spaced relation adjacent said perforating die, each shaft having at least one cam thereon, and means for simultaneously rotating said cam shafts in opposite rotative directions and at the same rotative speeds.
Claim 7
Dependent Claim
92 words
Apparatus for perforating sheet material which comprises a platen adapted to support the sheet material, a perforating die supported for movement toward and away from said platen, cam means operable to engage said die to positively press the same against said platen to effect perforation of the sheet material thereon, said cam means including a pair of shafts supported in spaced relation adjacent said perforating die, each shaft having at least one cam thereon, and means for simultaneously rotating said cam shafts in opposite rotative directions and at the same rotative speeds.
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) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |