US3683736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic perforating of a sheet of film, paper or the like
Assignee: Individual
•
Filing: 1970-12-23
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Granted: 1972-08-15
•
Expires: 1990-12-23
Abstract
Abstract A hole is punched through a sheet of photographic film or paper by positioning the sheet with one side in contact with a punch, and applying an ultrasonically vibrating horn to the opposite side to force the punch through the sheet. A long web of such material can be passed continuously past a horn while a series of punches are successively brought into register with the horn to pierce a series of spaced holes. Such a series of punches can be carried by a rotating cylindrical anvil over which the web is passing. Cores from the holes are sucked away from the operation, any cores remaining within punches first being expelled by fingers within the punches. The punches can move back and forth radially of the cylindrical anvil. A recess in the horn is adapted to receive the protruding ends of punches.
Inventors
- 👤 Guenter H Loose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:14
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C66/83; B29C66/834; B29C66/8351; B29C66/83511; B29C65/00; B29C65/02; B29C65/08; B29C65/083; B29C65/086; B29C65/087; B29C65/74; B29C65/743; B29C65/7443; B29C65/749; B29C66/81; B29C66/814; B29C66/8141; B29C66/81411; B29C66/81421; B29C66/81423; B29C66/81427; B29C66/81429; B29C66/81431; B29C66/816; B29C66/8161; B29C66/82; B29C66/822; B29C66/8226; B29C66/8341; B29C66/83411; B29C66/83415; B29C66/90; B29C66/95; B29C66/951; B29C66/9513; B29C2793/00; B29C2793/0045; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/81415; B29C66/81419; B29C66/9517; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0405; Y10T83/041; Y10T83/0414; Y10T83/0524; Y10T83/0577; Y10T83/283; Y10T83/293; Y10T83/465; Y10T83/4766; Y10T83/4795; Y10T83/4812; Y10T83/869; Y10T83/8752; Y10T83/97
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
51 words
A method for punching a hole through a sheet of material, comprising positioning said sheet with one side thereof in contact with a punch, and applying an ultrasonically vibrating horn to the opposite side of said sheet to force said sheet onto said punch which punches a hole through said sheet.
Claim 2
Independent Claim
51 words
A method for punching a hole through a sheet of material, comprising positioning said sheet with one side thereof in contact with a punch, and applying an ultrasonically vibrating horn to the opposite side of said sheet to force said sheet onto said punch which punches a hole through said sheet.
Claim 3
Dependent Claim
29 words
A method in accordance with claim 1, wherein said sheet is of a thermoplastic material, and wherein the vibrations of said ultrasonically vibrating horn heat and soften said material.
Claim 4
Dependent Claim
30 words
A method in accordance with claim 1 wherein said punch forms said hole by shaping a removable core, and wherein said core is removed from the vicinity of said sheet.
Claim 5
Dependent Claim
75 words
In an apparatus for punching a hole through a sheet of material, the combination comprising: an anvil, a punch protrudable from said anvil and in engagement with one side of the sheet, and an ultrasonic horn for engaging the other side of the sheet and positioned adjacent said punch in axial alignment therewith and adapted to be spaced from said anvil a distance at least equal to the thickness of the sheet to be punched.
Claim 6
Dependent Claim
75 words
In an apparatus for punching a hole through a sheet of material, the combination comprising: an anvil, a punch protrudable from said anvil and in engagement with one side of the sheet, and an ultrasonic horn for engaging the other side of the sheet and positioned adjacent said punch in axial alignment therewith and adapted to be spaced from said anvil a distance at least equal to the thickness of the sheet to be punched.
Claim 7
Dependent Claim
11 words
Apparatus in accordance with claim 4 wherein said punch is hollow.
Claim 8
Dependent Claim
77 words
Apparatus in accordance with claim 4 wherein said anvil is cylindrical in shape and is mounted for rotation past the end of said horn to carry said sheet in the form of a long narrow web continuously into and out of punching relationship with said horn, and wherein a plurality of punches are carried by said anvil and successively pass into and out of register with said horn; said apparatus also comprising mechanism for rotating said anvil.
Claim 9
Dependent Claim
56 words
Apparatus in accordance with claim 6, wherein said punches are movable back and forth radially of said cylindrical anvil, and wherein said apparatus also comprises mechanism for moving each punch outwardly to protrude from the surface of said anvil during passage of said punch in register with said anvil, and for subsequently moving said punch inwardly.
Claim 10
Dependent Claim
37 words
Apparatus in accordance with claim 6 wherein said horn has a groove therein adapted to register with and to receive the protruding portion of each punch for clearing the core formed by each punch from said web.
Claim 11
Dependent Claim
23 words
Apparatus in accordance with claim 6, also comprising means for removing the core formed by each punch from the vicinity of said web.
Claim 12
Dependent Claim
45 words
Apparatus in accordance with claim 7 wherein said mechanism for moving each punch comprises spring means urging each punch inwardly; and a stationary cam mounted internally of said cylindrical anvil, each of said punches having an inner end riding on the surface of said cam.
Claim 13
Dependent Claim
33 words
Apparatus in accordance with claim 7 wherein said punches are hollow, said apparatus also comprising a stationary finger within each punch acting to expel a core therefrom upon movement of said punch inwardly.
Claim 14
Dependent Claim
83 words
Apparatus in accordance with claim 7 wherein said cylindrical anvil has an annular recess extending laterally in from one side thereof, forming spaced inner and outer cylindrical flanges; wherein said punches extend through said inner and outer flanges and across said recess; and wherein said mechanism for moving each punch comprises a spring within said recess urging said punch resiliently inwardly, and a stationary cam mounted internally of said cylindrical anvil, each of said punches having an inner end riding on said cam.
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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |