Patent US4127227A successfully refreshed from Google Patents.
US4048988A
Expired / Lapsed
US
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Shutter for a rectoscope
Assignee: Richard Wolf GmbH
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Filing: 1976-01-08
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Granted: 1977-09-20
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Expires: 1996-01-08
Abstract
Abstract This relates to a shutter for a rectoscope, comprising a bolt insertable into the anterior terminal cross section of the rectoscope tube, and a terminal part rigidly connected to the bolt, arranged at a distance corresponding approximately with the length of the rectoscope.
Inventors
- 👤 Eberhard Regenbogen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:14
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/31
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
96 words
A shutter for a rectoscope instrument, comprising a bolt insertable into the anterior terminal cross section of a rectoscope tube, and a terminal part rigidly connected to the bolt, arranged at a distance corresponding approximately with the length of the rectoscope, characterized by the fact that the bolt (11, 19, 21, 31) is made from translucent material and connected by parallel elongated spaced rods, eccentric to the axis of the instrument thereby exposing a central visible cross section, to a terminal ring having an aperture therein affording an unobstructed view from the ring to the bolt.
Claim 2
Dependent Claim
96 words
A shutter for a rectoscope instrument, comprising a bolt insertable into the anterior terminal cross section of a rectoscope tube, and a terminal part rigidly connected to the bolt, arranged at a distance corresponding approximately with the length of the rectoscope, characterized by the fact that the bolt (11, 19, 21, 31) is made from translucent material and connected by parallel elongated spaced rods, eccentric to the axis of the instrument thereby exposing a central visible cross section, to a terminal ring having an aperture therein affording an unobstructed view from the ring to the bolt.
Claim 3
Dependent Claim
51 words
The shutter according to claim 1, characterized by the fact that the ring (15) consists of a thin walled outer flange (17) placeable against the wall of the rectoscope tube (41) at the terminal side and of a stud (16) insertable into the free terminal cross section of the rectoscope tube.
Claim 4
Dependent Claim
22 words
The shutter according to claim 1, characterized by the bolt (11,19) being conical at its frontal side and having a rounded end.
Claim 5
Dependent Claim
19 words
The shutter according to claim 1 characterized by the bolt (19) being frustoconical in shape at its frontal side.
Claim 6
Dependent Claim
23 words
The shutter according to claim 1 characterized by the bolt (21) being highly rounded on the frontal side to approximately semispherical in shape.
Claim 7
Dependent Claim
27 words
The shutter according to claim 1 characterized by the bolt (31) having at its frontal side the shape of a frustum with a planar frontal surface (32).
Claim 8
Dependent Claim
26 words
The shutter according to claim 1 characterized by the bolt (11, 19, 21, 31) being designed as a hollow part open toward the terminal part (15).
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) | 1980-09-19 | 1981-03-21 | 1981-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-19 | 1985-03-21 | 1985-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-19 | 1989-03-21 | 1989-09-20 | $7700.00 | Window Closed / Lapsed |