US4038977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endoscope equipped with a film cassette
Assignee: Olympus Corp
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Filing: 1976-07-08
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Granted: 1977-08-02
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Expires: 1996-07-08
Abstract
Abstract An endoscope has within the forward end section of a sheath a cassette loaded with a roll of film on which a body cavity of a human being is photographed. One end of a film take-up shaft on the cassette outwardly extends from a housing of the cassette and a pulley is fixed on the outer periphery of the extending end portion of the film take-up shaft. A string is wound around the pulley. The string is inserted through a single passage in the sheath and when the string is pulled by an operator at a control section the film is wound.
Inventors
- 👤 Takeshi Okada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:36
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/04; A61B1/05
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
154 words
An endoscope having a sheath; a control section disposed at the base of the sheath; said a film cassette disposed within the forward end section of the sheath said cassette having a housing means with an exposure window, a film received within said cassette housing means and a film take-up shaft rotatably supported in said cassette housing means, said shaft extending from the cassette housing means in a manner to be integral with the film take-up shaft; a pulley means fixed integral with said shaft means; a string whose one end is wound around the pulley means; a single passage provided in the longitudinal direction of the sheath to permit a delivery end of said string to be passed through the single passage; and a string pulling means adapted to rotate said pulley means by pulling said string at said control section to permit said film to be wound around said film take-up shaft.
Claim 2
Dependent Claim
154 words
An endoscope having a sheath; a control section disposed at the base of the sheath; said a film cassette disposed within the forward end section of the sheath said cassette having a housing means with an exposure window, a film received within said cassette housing means and a film take-up shaft rotatably supported in said cassette housing means, said shaft extending from the cassette housing means in a manner to be integral with the film take-up shaft; a pulley means fixed integral with said shaft means; a string whose one end is wound around the pulley means; a single passage provided in the longitudinal direction of the sheath to permit a delivery end of said string to be passed through the single passage; and a string pulling means adapted to rotate said pulley means by pulling said string at said control section to permit said film to be wound around said film take-up shaft.
Claim 3
Dependent Claim
57 words
The endoscope according to claim 1, in which said cassette housing means has a rib means provided in close proximity to the outer periphery of said pulley means and having at least cut out section from which said string is delivered, the remaining portion of said rib preventing said string from being disengaged from said pulley means.
Claim 4
Dependent Claim
17 words
The endoscope according to claim 2, in which said rib means is integral with said housing means.
Claim 5
Dependent Claim
43 words
The endoscope according to claim 1, in which said string pulling means includes a wire extending from said control section into said single passage, one end of said wire being releasably engaged with a delivery end of said string through a loop-hook connection.
Claim 6
Dependent Claim
47 words
The endoscope according to claim 4, in which a loop whose size can be varied is provided at said delivery end of said string and a hook is formed at said one end of said wire so as to be anchored to said loop of said string.
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) | 1980-08-01 | 1981-01-31 | 1981-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-01 | 1985-01-31 | 1985-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-01 | 1989-01-31 | 1989-08-02 | $7700.00 | Window Closed / Lapsed |