US4860040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera
Assignee: Canon Inc
•
Filing: 1988-06-16
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Granted: 1989-08-22
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Expires: 2008-06-16
Abstract
Abstract A camera uses a shape-memory material featuring the constuction and arrangement of the elements of shape-memory material in which different operations of the camera can be made performed by a common member of shape-memory material, or the operation of the camera can be recycled at a high rate as a fan is driven when the film is transported with advantages of improving features of the camera.
Inventors
- 👤 Hideo Tamamura
- 👤 Masakazu Taku
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:10
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/08; G03B3/00
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
141 words
A camera comprising: (A) motion means, rotatable in first and second directions, for effecting a sliding movement different from rotation when receiving rotative drive forces in said first and said second directions at the same time; (B) first shape-memory material for applying to said motion means the rotative drive force in said first direction; (C) a second shape-memory material for applying to said motion means the rotative drive force in said second direction; (D) first operating means, responsive to the rotation of said motion means by the drive force of said first or said second shape-memory material, for carrying out a first operation of the camera; and (E) second operating means, responsive to the sliding movement of said motion means by the drive forces of said first and said second shape-memory materials, for carrying out a second operation of the camera.
Claim 2
Dependent Claim
141 words
A camera comprising: (A) motion means, rotatable in first and second directions, for effecting a sliding movement different from rotation when receiving rotative drive forces in said first and said second directions at the same time; (B) first shape-memory material for applying to said motion means the rotative drive force in said first direction; (C) a second shape-memory material for applying to said motion means the rotative drive force in said second direction; (D) first operating means, responsive to the rotation of said motion means by the drive force of said first or said second shape-memory material, for carrying out a first operation of the camera; and (E) second operating means, responsive to the sliding movement of said motion means by the drive forces of said first and said second shape-memory materials, for carrying out a second operation of the camera.
Claim 3
Dependent Claim
25 words
A camera according to claim 1, wherein said motion means moves in the direction of an optical axis of the camera by said sliding movement.
Claim 4
Dependent Claim
18 words
A camera according to claim 1, wherein said first and said second shape-memory materials are provided in unison.
Claim 5
Dependent Claim
18 words
A camera according to claim 1, wherein said first or said second shape-memory material includes a shape-memory alloy.
Claim 6
Dependent Claim
20 words
A camera according to claim 1, wherein said first operating means includes exposure means for carrying out an exposure operation.
Claim 7
Dependent Claim
21 words
A camera according to claim 1, wherein said second operating means includes focus adjusting means for carrying out a focusing operation.
Claim 8
Dependent Claim
40 words
A camera comprising: (A) operating means for operating the camera; (B) a shape-memory material for driving said operating means; and (C) cooling means for cooling said shape-memory material, said cooling means operating when phalosensitive material in the camera is transported.
Claim 9
Dependent Claim
40 words
A camera comprising: (A) operating means for operating the camera; (B) a shape-memory material for driving said operating means; and (C) cooling means for cooling said shape-memory material, said cooling means operating when phalosensitive material in the camera is transported.
Claim 10
Dependent Claim
15 words
A camera according to claim 7, wherein said cooling means includes a fan for cooling.
Claim 11
Dependent Claim
25 words
A camera according to claim 8, wherein said fan for cooling includes means for operating by a drive force for transportation of the photosensitive material.
Claim 12
Dependent Claim
24 words
A camera according to claim 7, wherein said cooling means includes means for operating by a driving force for transportation of the photosensitive material.
Claim 13
Dependent Claim
14 words
A camera according to claim 7, wherein said shape-memory material includes a shape-memory alloy.
Claim 14
Dependent Claim
20 words
A camera according to claim 7, wherein said operating means includes focus adjusting means for carrying out a focusing operation.
Claim 15
Dependent Claim
78 words
A camera comprising: (A) operating means for operating the camera; (B) a driving shape-memory material for driving said operating means, said driving shape memory material driving said operating means by restoring deformation; and (C) overheat preventing shape-memory material for preventing said driving shape-memory material from being overheated, said overheat preventing shape-memory material deforming to restore later than said driving shape-memory material and, when in deforming to restore, hindering the temperature of said driving shape-memory material from further rising.
Claim 16
Dependent Claim
78 words
A camera comprising: (A) operating means for operating the camera; (B) a driving shape-memory material for driving said operating means, said driving shape memory material driving said operating means by restoring deformation; and (C) overheat preventing shape-memory material for preventing said driving shape-memory material from being overheated, said overheat preventing shape-memory material deforming to restore later than said driving shape-memory material and, when in deforming to restore, hindering the temperature of said driving shape-memory material from further rising.
Claim 17
Dependent Claim
47 words
A camera according to claim 13, wherein said driving shape-memory material and said overheat preventing shape-memory material are arranged, upon common current supply, to generate heat so that when said overheat preventing shape-memory material deforms to restore, the current supply to said driving shape-memory material is hindered.
Claim 18
Dependent Claim
24 words
A camera according to claim 14, wherein said driving shape-memory material and said overheat preventing shape-memory material are connected in series to each other.
Claim 19
Dependent Claim
27 words
A camera according to claim 15, wherein said overheat preventing shape-memory material is in the form of a plurality of members connected in parallel with one another.
Claim 20
Dependent Claim
22 words
A camera according to claim 15, wherein said overheat preventing shape-memory material has a larger cross-sectional area than said driving shape-memory material.
Claim 21
Dependent Claim
18 words
A camera according to claim 15, wherein said overheat preventing shape-memory material is provided with heat radiating means.
Claim 22
Dependent Claim
20 words
A camera according to claim 13, wherein said operating means includes focus adjusting means for carrying out a focusing operation.
Claim 23
Dependent Claim
21 words
A camera according to claim 13, wherein said driving shape-memory material or said overheat preventing shape-memory material includes a shape-memory alloy.
References Cited (Backward Citations)
US4664493A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-08-21 | 1993-02-20 | 1993-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-21 | 1997-02-20 | 1997-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-21 | 2001-02-20 | 2001-08-22 | $7700.00 | Window Closed / Lapsed |