Patent US4793725A successfully refreshed from Google Patents.
US4793725A
Expired / Lapsed
US
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Photo clamp joint
Assignee: Individual
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Filing: 1987-04-22
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Granted: 1988-12-27
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Expires: 2007-04-22
Abstract
Abstract The invention is a photo clamp joint which can display photographs in various flat or three-dimensional displays, the device is composed of two four leaf clover shaped pieces having crossed small semi-circular protrusions to clamp photos or other paper materials in series to form different shapes for the purpose of creating a display.
Inventors
- 👤 Huo-Ching Cheng
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:35
CPC Classifications
A; A47; A47G; A47G1/00; A47G1/06; A47G1/065; A47G1/16; A47G1/20; A47G1/21; A47G1/215; F; F16; F16B; F16B5/00; F16B5/0004; F16B5/06; F16B5/0607; Y; Y10; Y10T; Y10T403/00; Y10T403/34; Y10T403/341; Y10T403/345
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
79 words
A type of photo clamp joint consisting of two identical pieces, featuring elongated openings on the four edges of each arm of a cross-shape piece, and a central recess at the middle of the upper surface, and several semi-spherical protrusions in a crosswise pattern on the lower surface, and a crossed pattern of elongated protrusion edges and elongated housing grooves to join a first piece with opposing elongated housing protrusion edges and the elongated grooves of a second piece.
Claim 2
Dependent Claim
79 words
A type of photo clamp joint consisting of two identical pieces, featuring elongated openings on the four edges of each arm of a cross-shape piece, and a central recess at the middle of the upper surface, and several semi-spherical protrusions in a crosswise pattern on the lower surface, and a crossed pattern of elongated protrusion edges and elongated housing grooves to join a first piece with opposing elongated housing protrusion edges and the elongated grooves of a second piece.
Claim 3
Dependent Claim
132 words
A photo clamp joint consisting essentially of a first planar piece and a second planar piece, each planar piece having: (1) semi-spherical protrusions raised within a plane of each planar piece, each planar piece having in its center a central recess oriented within each of said planar pieces; (2) a bottom surface, said bottom surface having at least one raised elongated housing groove and at least one elongated protrusion said raised elongated housing groove of a first planar piece being adapted to removably receive and retain said elongated protrusion of a second piece whereby said semi-spherical protrusions of said first planar piece are aligned and paired in juxtaposition with said semi-spherical protrusions of said second planar piece such that a pair of said semi-spherical protrusions removably hold a corner of a photo.
Claim 4
Dependent Claim
132 words
A photo clamp joint consisting essentially of a first planar piece and a second planar piece, each planar piece having: (1) semi-spherical protrusions raised within a plane of each planar piece, each planar piece having in its center a central recess oriented within each of said planar pieces; (2) a bottom surface, said bottom surface having at least one raised elongated housing groove and at least one elongated protrusion said raised elongated housing groove of a first planar piece being adapted to removably receive and retain said elongated protrusion of a second piece whereby said semi-spherical protrusions of said first planar piece are aligned and paired in juxtaposition with said semi-spherical protrusions of said second planar piece such that a pair of said semi-spherical protrusions removably hold a corner of a photo.
Claim 5
Dependent Claim
24 words
The photo clamp joint of claim 2 wherein a pattern of four crossed semi-spherical protrusions are raised within said plane of each planar piece.
Claim 6
Dependent Claim
17 words
The photo clamp joint of claim 2 wherein said bottom surface has a plurality of elongated protrusions.
Claim 7
Dependent Claim
23 words
The photo clamp joint of claim 4 wherein two radially opposing raised elongated housing grooves are crossed with two radially opposing elongated protrusions.
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) | 1991-12-27 | 1992-06-27 | 1992-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-27 | 1996-06-27 | 1996-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-27 | 2000-06-27 | 2000-12-27 | $7700.00 | Window Closed / Lapsed |