US4167302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical microscopes with L-shaped mounting brackets
Assignee: Topcon Corp
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Filing: 1977-08-23
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Granted: 1979-09-11
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Expires: 1997-08-23
Abstract
Abstract Surgical microscope in which the microscope body is mounted on a support member which is laterally and vertically swingable and slidable along its longitudinal axis. The body comprises an objective lens tube mounted on said support member and having a pair of objective lenses. The objective lens tube can be mounted on said support member at two different positions for accommodating two different types of binocular tubes.
Inventors
- 👤 Yukinori Karasawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:58
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/18; G02B21/20; G02B21/22; G02B23/00; G02B23/16; G02B23/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
168 words
A surgical microscope comprising a support member mounted on a frame for lateral swinging movement about a first axis and a vertical swinging movement about a second axis, said support member being movable along a third axis which is parallel with neither of said first and second axes, objective lens tube means having a longitudinal axis and carrying at least a pair of objective lens systems, binocular tubes removably mounted on said objective lens tube means and including at least two pairs of eye lenses, each corresponding to said pair of objective lens systems, means for mounting said objective lens tube means on said support member in at least two alternative positions between which said objective lens tube means is rotated about its longitudinal axis by a predetermined angle, said mounting means including a generally L-shaped mounting bracket having first and second legs which are alternatively attached to the objective lens tube, means on said first and second legs for alternately attaching said legs to said support member.
Claim 2
Dependent Claim
168 words
A surgical microscope comprising a support member mounted on a frame for lateral swinging movement about a first axis and a vertical swinging movement about a second axis, said support member being movable along a third axis which is parallel with neither of said first and second axes, objective lens tube means having a longitudinal axis and carrying at least a pair of objective lens systems, binocular tubes removably mounted on said objective lens tube means and including at least two pairs of eye lenses, each corresponding to said pair of objective lens systems, means for mounting said objective lens tube means on said support member in at least two alternative positions between which said objective lens tube means is rotated about its longitudinal axis by a predetermined angle, said mounting means including a generally L-shaped mounting bracket having first and second legs which are alternatively attached to the objective lens tube, means on said first and second legs for alternately attaching said legs to said support member.
Claim 3
Dependent Claim
15 words
A surgical microscope in accordance with claim 1 in which said predetermined angle is 90°.
Claim 4
Dependent Claim
48 words
A surgical microscope in accordance with claim 1 in which said leg attaching means includes a fitting of dove-tail cross-section on each of the legs and a fitting on the support member which has a groove of dove-tail cross-section for receiving the fitting on either of said legs.
Claim 5
Dependent Claim
17 words
A surgical microscope in accordance with claim 1 in which said mounting bracket is of one-piece construction.
Claim 6
Dependent Claim
27 words
A surgical microscope in accordance with claim 1 in which one of the legs has opening means for providing optical path for at least one further accessory.
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) | 1982-09-10 | 1983-03-12 | 1983-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-10 | 1987-03-12 | 1987-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-10 | 1991-03-12 | 1991-09-11 | $7700.00 | Window Closed / Lapsed |