US3939340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffused light reflecting screen for taking photos and the like
Assignee: Individual
•
Filing: 1974-08-14
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Granted: 1976-02-17
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Expires: 1994-08-14
Abstract
Abstract A foldable reflecting screen for taking photos and the like comprising a carrying skeleton defining an inner space of parabolic cross section having a base rectangular frame and which is formed of members which are articulated to each other and of members which can be connected to each other by disengageable means so that the skeleton components can be partly disassembled and partly folded so as to occupy a minimum space or according to an opposite sequence of operations can be brought in their use position, and of an outer covering which comprises a first portion made of flexible, opaque sheet material having a white inner surface and a dark outer surface and designed to cover the parabolic surface defined by said skeleton, and a second portion made of translucent flexible material to screen the rectangular base of said skeleton and which is at least disconnectably connected with the first portion along their edges said base frame comprising two side rods and cross members, near the ends of said longitudinal rods of the rectangular frame and at least on one intermediate point first fittings being provided to disassemblably receive the ends of said cross members and other fittings to disassemblably receive the ends of curved centering parabolic rods.
Inventors
- 👤 Renato Gozzano
- 👤 Santino Martinelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:51
CPC Classifications
F; F21; F21V; F21V7/00; F21V7/10; F21V7/18; G; G03; G03B; G03B15/00; G03B15/02; G03B15/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
216 words
A foldable reflecting screen for taking photos and the like characterized by the fact that it is constituted of a carrying skeleton defining an inner space of parabolic cross section having a base rectangular frame and which is formed of members which are articulated to each other and of members which can be connected to each other by disengageable means so that the skeleton components can be partly disassembled and partly folded so as to occupy a minimum space or according to an opposite sequence of operations can be brought in their use position, and of an outer covering which comprises a first portion made of flexible, opaque sheet material having a white inner surface and a dark outer surface and designed to cover the parabolic surface defined by said skeleton, and a second portion made of translucent flexible material to screen the rectangular base of said skeleton and which is at least disconnectably connected with the first portion along their edges, said base frame comprising two side rods and cross members, near the ends of said longitudinal rods of the rectangular frame and at least on one intermediate point first fittings being provided to disassemblably receive the ends of said cross members, and other fittings to disassemblably receive the ends of curved centering parabolic rods.
Claim 2
Dependent Claim
216 words
A foldable reflecting screen for taking photos and the like characterized by the fact that it is constituted of a carrying skeleton defining an inner space of parabolic cross section having a base rectangular frame and which is formed of members which are articulated to each other and of members which can be connected to each other by disengageable means so that the skeleton components can be partly disassembled and partly folded so as to occupy a minimum space or according to an opposite sequence of operations can be brought in their use position, and of an outer covering which comprises a first portion made of flexible, opaque sheet material having a white inner surface and a dark outer surface and designed to cover the parabolic surface defined by said skeleton, and a second portion made of translucent flexible material to screen the rectangular base of said skeleton and which is at least disconnectably connected with the first portion along their edges, said base frame comprising two side rods and cross members, near the ends of said longitudinal rods of the rectangular frame and at least on one intermediate point first fittings being provided to disassemblably receive the ends of said cross members, and other fittings to disassemblably receive the ends of curved centering parabolic rods.
Claim 3
Dependent Claim
227 words
A reflecting screen according to claim 1, wherein the partly foldable and partly disassemblable skeleton is constituted of a base rectangular frame formed of two longitudinal rods made of a single piece and by three composite cross members, each formed by three sections, the central of which is disassemblably connected to the other ones which are made integral with the longitudinal rods of the said frame, a longitudinal beam positioned at a level higher than that of said longitudinal rods being carried by the ends of the longitudinal rods of the base frame by two pairs of doublehinged arms which are connected respectively to one of two sliders slidely mounted on said beam, each of said arms being formed of three sections, articulated to each other, the upper end sections being integral with the corresponding slider and rod lower end sections being integral with said rod ends, while the axes of the hinges connecting the adjacent arm sections are so positioned as to allow said sections to be arranged either in their aligned relationship or in such a manner that their central sections become substantially parallel to the beam and to the rods after the sliders being duly slided along said upper beam approaching the centre of said beam, stop means being provided adapted to define the alignment position of the three sections of each composite arm.
Claim 4
Dependent Claim
114 words
A reflecting screen according to claim 1, wherein the connections between the curved rods and the fittings made integral with the longitudinal rods of the base frame and those of the central sections of the cross members with the rods are constituted of joints inclunding guiding means arranged in the end sections and a row of notches arranged in the ends of the disassemblable central section of the cross member or the disassemblable curved rods and co-operating with spring locking means, manually releasable, thus enabling the sliding and the locking of said central sections until the desired position of the rods with respect of the end sections thereof fixedly connected to the longitudinal rods.
Claim 5
Dependent Claim
71 words
A reflecting screen according to claim 1, wherein said first portion of said covering is so shaped as to entirely cover the parabolic outer surface defined by the skeleton, while the second portion which is designed to screen the rectangular base of said skeleton is flexible opaline or translucent and is fixedly connected along one longitudinal edge to the preceding part, while along the other edges openable closure means are provided.
Claim 6
Dependent Claim
15 words
A reflecting screen according to claim 4, wherein said openable closure means comprise zipper means.
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) | 1979-02-16 | 1979-08-18 | 1980-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-16 | 1983-08-18 | 1984-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-16 | 1987-08-18 | 1988-02-17 | $7700.00 | Window Closed / Lapsed |