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US4283111A Expired / Lapsed US ⏱️ 0.0 years remaining

Microscope stand with protected turret

Assignee: Ernst Leitz Wetzlar GmbH
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Filing: 1980-01-28
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Granted: 1981-08-11
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Expires: 2000-01-28
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Abstract

Abstract Disclosed is a microscope stand which permits a lens turret and an eyepiece mounted on the stand to be mounted close enough together to eliminate the necessity of an intervening tube lens. In permitting this mounting of the lenses, a recess is provided in the stand which substantially weakens the mounting structure. Vertical webs are provided in the preferred embodiment which extend adjacent the recess and external to the lens turret which strengthen the microscope stand and mounting structure.

Inventors

  • 👤 Karl Wieber
  • 👤 Heinrich Janke
  • 👤 Winfried Kraft
  • 👤 Robert Lisfeld

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 01:04
CPC Classifications
G; G02; G02B; G02B21/00

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 227 words
A microscope including an eyepiece assembly, a rotatable lens turret, at least one objective lens mounted on said lens turret, said microscope further including a microscope stand, said stand having front and rear portions including an eyepiece and lens turret mounting structure, said structure extending generally horizontally in a direction from the rear portion of said stand towards the front portion of said stand, said stand including means defining a recess in a lower surface of said structure, said recess extending towards an upper surface of said structure, said recess defining a recessed surface, said eyepiece assembly mounted on said upper surface and said lens turret rotatably mounted on said recessed surface, said recessed surface recessed from a lower surface of said structure and at an angle with the horizontal, said recessed surface slopes downwardly away from said rear portion of said stand, said recessed surface being sufficiently close to said upper surface such that said lens turret and said eyepiece assembly are operatively mounted to obviate the necessity of an intervening tube lens, said recess contributing to define a weakened portion of said structure, said structure further including means for strengthening said weakened portion, said strengthening means comprises at least one vertical web along said structure, said web having a greater vertical thickness adjacent said recess than the vertical thickness of said structure in said recess.
Claim 2
Dependent Claim 227 words
A microscope including an eyepiece assembly, a rotatable lens turret, at least one objective lens mounted on said lens turret, said microscope further including a microscope stand, said stand having front and rear portions including an eyepiece and lens turret mounting structure, said structure extending generally horizontally in a direction from the rear portion of said stand towards the front portion of said stand, said stand including means defining a recess in a lower surface of said structure, said recess extending towards an upper surface of said structure, said recess defining a recessed surface, said eyepiece assembly mounted on said upper surface and said lens turret rotatably mounted on said recessed surface, said recessed surface recessed from a lower surface of said structure and at an angle with the horizontal, said recessed surface slopes downwardly away from said rear portion of said stand, said recessed surface being sufficiently close to said upper surface such that said lens turret and said eyepiece assembly are operatively mounted to obviate the necessity of an intervening tube lens, said recess contributing to define a weakened portion of said structure, said structure further including means for strengthening said weakened portion, said strengthening means comprises at least one vertical web along said structure, said web having a greater vertical thickness adjacent said recess than the vertical thickness of said structure in said recess.
Claim 3
Dependent Claim 21 words
A microscope according to claim 1, wherein said recess is at least partially defined by a segment of a conical surface.
Claim 4
Dependent Claim 23 words
A microscope according to claim 1, wherein said recess is at least partially defined by at least a segment of a cylindrical surface.
Claim 5
Dependent Claim 25 words
A microscope according to one of claims 1, 2 or 3, wherein said lens turret includes means for mounting said turret on said recessed surface.
Claim 6
Dependent Claim 39 words
A microscope according to one of claims 1, 2 or 3, wherein there is further provided a connecting fitting mounted on said recessed surface and said lens turret includes means for mounting said lens turret on said connecting fitting.
Claim 7
Dependent Claim 27 words
A microscope according to one of claims 1, 2 or 3, wherein said structure is wider in the lateral direction in the area of said recessed surface.
Claim 8
Dependent Claim 45 words
A microscope according to one of claims 1, 2 or 3, wherein said at least one vertical web has a lower edge and said lower edge extends in a straight line from the rear portion of the stand to the front portion of the stand.

References Cited (Backward Citations)

US3565512A Cited
US4168881A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-08-10 1985-02-09 1985-08-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-08-10 1989-02-09 1989-08-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-08-10 1993-02-09 1993-08-11 $7700.00 Window Closed / Lapsed

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