US4128310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zoom mirror
Assignee: Individual
•
Filing: 1977-06-06
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Granted: 1978-12-05
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Expires: 1997-06-06
Abstract
Abstract A variable mirror having a reflecting surface which can be formed to have a curved, that is, a convex or concave contour to provide variable degrees of magnification. The mirror is adapted for utilization in a compact or vanity case, or the like. Various mechanisms are provided for varying the degree of curvature and magnification of the mirror, these means preferably being manually actuatable.
Inventors
- 👤 John Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:46
CPC Classifications
G; G02; G02B; G02B26/00; G02B26/08; G02B26/0816; G02B26/0825
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
98 words
A variable focal length mirror comprising: a resilient, deformable member having a reflective surface and being deformable into curved configurations; a second member, said second member being movable and having at least portions thereof being spaced from said first member; a medium between said first member and said second member providing a coupling therebetween, the second member being movable to deform the first member, through the coupling provided by the medium, to a selected curvature; and means attached to the first member such that the first member is prevented from assuming a concave curvature relative to the ambient.
Claim 2
Dependent Claim
98 words
A variable focal length mirror comprising: a resilient, deformable member having a reflective surface and being deformable into curved configurations; a second member, said second member being movable and having at least portions thereof being spaced from said first member; a medium between said first member and said second member providing a coupling therebetween, the second member being movable to deform the first member, through the coupling provided by the medium, to a selected curvature; and means attached to the first member such that the first member is prevented from assuming a concave curvature relative to the ambient.
Claim 3
Dependent Claim
95 words
The invention as set forth in claim 1 wherein said means for preventing said first member from assuming a concave curvature comprises a third member, the third member being substantially planar and non-deformable, the third member being attached to said first member to form a first space therewith and wherein said second member is attached to the third member forming a second space therewith, said first space and said second space being substantially closed to the ambient, the third member defining a conduit between said first and second spaces for passage of said medium therethrough.
Claim 4
Dependent Claim
35 words
The invention as set forth in claim 2 wherein said second member is constructed to have a greater degree of flexibility adjacent its attachment to said third member to facilitate movement of the second member.
Claim 5
Dependent Claim
14 words
The invention as set forth in claim 3 wherein said medium is a liquid.
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) | 1981-12-04 | 1982-06-05 | 1982-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-04 | 1986-06-05 | 1986-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-04 | 1990-06-05 | 1990-12-05 | $7700.00 | Window Closed / Lapsed |