US3712745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spectrophotometer multi-angle viewing device
Assignee: EIDP Inc
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Filing: 1971-01-12
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Granted: 1973-01-23
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Expires: 1991-01-12
Abstract
Abstract A spectrophotometer multi-angle viewing device with a housing and holders for a test panel and reference standard. The holders allow rotation of a reference standard 360* in a vertical plane and rotation of a test panel 360* in a vertical plane and + OR 45* from the horizontal in a vertical plane perpendicular to the vertical plane in which the 360* rotation is possible.
Inventors
- 👤 W Armstrong
- 👤 W Edwards
- 👤 R Vining
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:50
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/55; G01J; G01J3/00; G01J3/46; G01J3/50; G01J3/504; G01J3/02; G01J3/0267
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
245 words
A multi-angle viewing device comprising a housing, with a door hingedly attached thereto, means for holding and rotating a reference standard 360* in a vertical plane attached to said housing, wherein the means for holding and rotating a reference standard is a shaft rotatably attached to said housing and extending into the interior of said housing, said standard shaft cut at one end so as to allow a reference standard to be attached thereto, said standard shaft also having a turning handle fixedly attached thereto at a position outside said housing, means for holding and rotating a test panel 360* in a vertical plane and + OR - 45* from the horizontal in a vertical plane perpendicular to the vertical plane in which 360* rotation is possible attached to said housing, each of said means being so positioned that the reference standard and test panel are similarly situated with respect to incident light directed thereon through an aperture in said housing, wherein said means for holding and rotating a test panel is a receiver formed from a panel pressure plate hingedly attached to a panel base plate, said panel base plate pivotally attached to fork means to allow + OR - 45* vertical rotation from the horizontal, said forked means fixedly attached to a sample shaft which is rotatably attached to said housing and extends through said housing, and wherein a turning handle is fixedly attached to said sample shaft which extends outside said housing.
Claim 2
Dependent Claim
245 words
A multi-angle viewing device comprising a housing, with a door hingedly attached thereto, means for holding and rotating a reference standard 360* in a vertical plane attached to said housing, wherein the means for holding and rotating a reference standard is a shaft rotatably attached to said housing and extending into the interior of said housing, said standard shaft cut at one end so as to allow a reference standard to be attached thereto, said standard shaft also having a turning handle fixedly attached thereto at a position outside said housing, means for holding and rotating a test panel 360* in a vertical plane and + OR - 45* from the horizontal in a vertical plane perpendicular to the vertical plane in which 360* rotation is possible attached to said housing, each of said means being so positioned that the reference standard and test panel are similarly situated with respect to incident light directed thereon through an aperture in said housing, wherein said means for holding and rotating a test panel is a receiver formed from a panel pressure plate hingedly attached to a panel base plate, said panel base plate pivotally attached to fork means to allow + OR - 45* vertical rotation from the horizontal, said forked means fixedly attached to a sample shaft which is rotatably attached to said housing and extends through said housing, and wherein a turning handle is fixedly attached to said sample shaft which extends outside said housing.
Claim 3
Dependent Claim
46 words
The multi-angle viewing device of claim 1 wherein circular positioning rings are concentrically mounted around the standard and sample shafts, respectively, said positioning rings fixedly attached to tHe housing, said circular positioning ring incrementally marked in degrees in order that precise rotational settings can be obtained.
Claim 4
Dependent Claim
33 words
The multi-angle viewing device of claim 2 wherein the panel base plate is horseshoe shaped so as to define an aperture whereby light can be focused on a panel contained in the receiver.
Claim 5
Dependent Claim
94 words
The multi-angle viewing device of claim 3 wherein the panel base plate is pivotally attached to the fork means by pivot pins, one of said pivot pins having fixedly attached thereto angle selecting means which consists of a notched circular ring attached concentrically around said pivot pin between the receiver and fork means and a spring operated lever pivotally attached to the interior of said fork means said lever being spring loaded and having a male head capable of mating with the notched circular ring thereby securing a desired angular rotation of the receiver.
Claim 6
Dependent Claim
48 words
The multi-angle viewing device of claim 4 wherein a circular angle indicator ring is attached to the pivot pin at its exterior end parallel to the notched circular ring, said circular angle indicator ring incrementally marked in degrees in order to accurately set vertical rotation of the receiver.
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) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |