US3579801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Opener for a film pack
Assignee: Individual
•
Filing: 1968-04-01
•
Granted: 1971-05-25
•
Expires: 1988-04-01
Abstract
Abstract This invention is directed to a method and an apparatus for opening a film pack so as to easily and quickly remove the film from the film pack. It is necessary to remove the film from the film pack without damaging the film such as by scratching the undeveloped film or by tearing in two the undeveloped film or by allowing the film to become unraveled from the film pack and generally mixed. I have approached this problem from the standpoint of enlarging the opening in the film pack so that the undeveloped film can be removed from the film pack without substantially touching any of the body of the container of the film pack around the opening.
Inventors
- 👤 Frank Y Ishihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:42
CPC Classifications
G; G03; G03D; G03D13/00; G03D13/001; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49815; Y10T29/49821; Y10T29/51; Y10T29/5147; Y10T29/5148
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
135 words
A method for opening a film pack comprising a container having a front wall and an opening in the front wall, a first means juxtapositioned to said front wall, and part of a roll of film between said wall and said first means, said method comprising: a. increasing the distance between the first means and the front wall to allow the film to move freely between the first means and the front wall, by inserting a wedge between said first means and said front wall, and b. separating part of the front wall adjacent to the opening and juxtapositioned to the first means from the adjacent part of the front wall by moving said wedge and said film pack relative to each other to increase the distance between the first means and the front wall.
Claim 2
Independent Claim
135 words
A method for opening a film pack comprising a container having a front wall and an opening in the front wall, a first means juxtapositioned to said front wall, and part of a roll of film between said wall and said first means, said method comprising: a. increasing the distance between the first means and the front wall to allow the film to move freely between the first means and the front wall, by inserting a wedge between said first means and said front wall, and b. separating part of the front wall adjacent to the opening and juxtapositioned to the first means from the adjacent part of the front wall by moving said wedge and said film pack relative to each other to increase the distance between the first means and the front wall.
Claim 3
Dependent Claim
138 words
An opener for opening a film pack, said film pack comprising a container having a front wall and an opening in the front wall, a first means juxtapositioned to said front wall, and part of a roll of film between said wall and said first means, said apparatus comprising: a. a wedge; b. said wedge being of less width than said opening in said front wall and for insertion in said opening and for insertion between the front wall and said film; and c. a second means to move the wedge and the film pack with respect to each other to separate that part of the front wall adjacent to the opening and juxtapositioned to the first means from the adjacent part of the front wall to increase the distance between the first means and the front wall.
Claim 4
Dependent Claim
138 words
An opener for opening a film pack, said film pack comprising a container having a front wall and an opening in the front wall, a first means juxtapositioned to said front wall, and part of a roll of film between said wall and said first means, said apparatus comprising: a. a wedge; b. said wedge being of less width than said opening in said front wall and for insertion in said opening and for insertion between the front wall and said film; and c. a second means to move the wedge and the film pack with respect to each other to separate that part of the front wall adjacent to the opening and juxtapositioned to the first means from the adjacent part of the front wall to increase the distance between the first means and the front wall.
Claim 5
Dependent Claim
39 words
An opener according to claim 2 and comprising: a. a supporting leg; b. a third means to mount the wedge on the supporting leg; and c. said second means comprising a handle for bearing down on the film pack.
Claim 6
Dependent Claim
92 words
An opener according to claim 2 and comprising: a. a base; b. a first leg integral with said base; c. a second leg integral with said base; d. in a side elevational view the base, the first leg and the second leg presenting a generally U-configuration; e. said second means being a handle having a bearing surface; f. a thirD means connecting the first leg and the handle to allow the handle to rotate with respect to the first leg; and g. a fourth means mounting said wedge on the second leg.
Claim 7
Dependent Claim
237 words
An opener for opening a film pack, said film pack comprising a container having a front wall and an opening in the front wall, a first means juxtapositioned to said front wall, and part of a roll of film between said wall and said first means, said apparatus comprising: a. a wedge; b. said wedge being of less width than said opening in said front wall and for insertion in said opening and for insertion between the front wall and said film; c. a second means to move the wedge and the film pack with respect to each other to separate that part of the front wall adjacent to the opening and juxtapositioned to the first means from the adjacent part of the front wall to increase the distance between the first means and the front wall; d. a base; e. a first leg integral with said base; f. a second leg integral with said base; g. in a side elevational view the base, the first leg and the second leg presenting a generally U-configuration; h. said second means being a handle having a bearing surface; i. a third means connecting the first leg and the handle to allow the handle to rotate with respect to the first leg; j. a fourth means mounting said wedge on the second leg; and k. said fourth means adjusting the position of the wedge with respect to the second leg.
Claim 8
Dependent Claim
237 words
An opener for opening a film pack, said film pack comprising a container having a front wall and an opening in the front wall, a first means juxtapositioned to said front wall, and part of a roll of film between said wall and said first means, said apparatus comprising: a. a wedge; b. said wedge being of less width than said opening in said front wall and for insertion in said opening and for insertion between the front wall and said film; c. a second means to move the wedge and the film pack with respect to each other to separate that part of the front wall adjacent to the opening and juxtapositioned to the first means from the adjacent part of the front wall to increase the distance between the first means and the front wall; d. a base; e. a first leg integral with said base; f. a second leg integral with said base; g. in a side elevational view the base, the first leg and the second leg presenting a generally U-configuration; h. said second means being a handle having a bearing surface; i. a third means connecting the first leg and the handle to allow the handle to rotate with respect to the first leg; j. a fourth means mounting said wedge on the second leg; and k. said fourth means adjusting the position of the wedge with respect to the second leg.
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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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |