Patent US4309375A successfully refreshed from Google Patents.
Patent US4690363A successfully refreshed from Google Patents.
US4690363A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Canvas carrier
Assignee: Individual
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Filing: 1986-08-29
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Granted: 1987-09-01
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Expires: 2006-08-29
Abstract
Abstract Portable canvas carrier has a central spine with a carrying handle. Movably mounted on the central spine are cross members for holding one or more canvases. The cross members are adjustable for canvas size. A tripod head is attachable to the central spine and is clampable thereto at selected position. The tripod head is of sufficient adjustability to swing from a near horizontal to a near vertical position. The head is carried on three tripod legs for support of the canvas carrier and easel apparatus.
Inventors
- 👤 Thomas Koves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:48
CPC Classifications
A; A47; A47B; A47B97/00; A47B97/04; A47B97/08
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
256 words
In combination: a central spine, said central spine having a substantially uniform exterior cross section; a manually engageable handle on said central spine for manual grasp; first and second cross members on said central spine, each of said first and second cross members being mounted on said central spine, each of said adjustable cross members having a collar thereon which embraces said spine, means on said collar for locking said collar at a selected position on said spine; means on each of said first and second cross members for engagement on an artist's canvas panel so that said means on said cross member can grasp an artist's canvas panel to be carried by said manually graspable handle, each of said cross rails having first and second channels therein, said first channel having sufficient width to engage on the edge of a panel of first thickness and said second channel having a width suitable to engage on the edge of a panel of second thickness; a tripod, said tripod having a head and having three legs pivotally mounted to said head, said tripod head having a transverse pivot axis, said tripod head being substantially upright disc with said axis substantially through the center of said disc, an arcuate slot through said disc around said axis, a control unit engaging said central spine and said tripod head, and a clamp engaging said control unit and extending through said arcuate slot to clamp said control unit at a selected angle with respect to said disc on said tripod head.
Claim 2
Dependent Claim
256 words
In combination: a central spine, said central spine having a substantially uniform exterior cross section; a manually engageable handle on said central spine for manual grasp; first and second cross members on said central spine, each of said first and second cross members being mounted on said central spine, each of said adjustable cross members having a collar thereon which embraces said spine, means on said collar for locking said collar at a selected position on said spine; means on each of said first and second cross members for engagement on an artist's canvas panel so that said means on said cross member can grasp an artist's canvas panel to be carried by said manually graspable handle, each of said cross rails having first and second channels therein, said first channel having sufficient width to engage on the edge of a panel of first thickness and said second channel having a width suitable to engage on the edge of a panel of second thickness; a tripod, said tripod having a head and having three legs pivotally mounted to said head, said tripod head having a transverse pivot axis, said tripod head being substantially upright disc with said axis substantially through the center of said disc, an arcuate slot through said disc around said axis, a control unit engaging said central spine and said tripod head, and a clamp engaging said control unit and extending through said arcuate slot to clamp said control unit at a selected angle with respect to said disc on said tripod head.
Claim 3
Dependent Claim
211 words
A portable carrier and easel apparatus comprising: a tripod, legs on said tripod and a head on said tripod; a canvas carrier, said canvas carrier having a central spine and having first and second cross members thereon, said cross members each having a cross rail thereon, at least one of said cross members being adjustable with respect to said central spine so that said cross rails can be adjusted towards and away from each other, said cross rails each having a channel thereon sized to engage over the edge of an artist panel, said cross rails facing each other so that a panel engaged thereby is retained thereby; manual means on said central spine for manual grasp so that said central spine and cross members carried thereon may be manually engaged and carried; and a control unit interconnected said central spine and said tripod head for supporting said central spine, said control unit being slidably mounted on said central spine and a locking mechanism between said control unit and said central spine so that said central spine can be moved to a selected position on said control unit and locked at the selected position for adjustment of said central spine and said cross members thereon with respect to said tripod head.
Claim 4
Dependent Claim
211 words
A portable carrier and easel apparatus comprising: a tripod, legs on said tripod and a head on said tripod; a canvas carrier, said canvas carrier having a central spine and having first and second cross members thereon, said cross members each having a cross rail thereon, at least one of said cross members being adjustable with respect to said central spine so that said cross rails can be adjusted towards and away from each other, said cross rails each having a channel thereon sized to engage over the edge of an artist panel, said cross rails facing each other so that a panel engaged thereby is retained thereby; manual means on said central spine for manual grasp so that said central spine and cross members carried thereon may be manually engaged and carried; and a control unit interconnected said central spine and said tripod head for supporting said central spine, said control unit being slidably mounted on said central spine and a locking mechanism between said control unit and said central spine so that said central spine can be moved to a selected position on said control unit and locked at the selected position for adjustment of said central spine and said cross members thereon with respect to said tripod head.
Claim 5
Dependent Claim
228 words
A portable carrier and easel apparatus comprising: a tripod, legs on said tripod and a head on said tripod; a canvas carrier, said canvas carrier having a central spine and having first and second cross members thereon, said cross members each having a cross rail thereon, at least one of said cross members being adjustable with respect to said central spine so that said cross rails can be adjusted towards and away from each other, said cross rails each having a channel thereon sized to engage over the edge of an artist panel, said cross rails facing each other so that a panel engaged thereby is retained thereby; manual means on said central spine for manual grasp so that said central spine and cross members carried thereon may be manually engaged and carried; and a control unit interconnecting said central spine and said tripod head for supporting said central spine, said control unit being pivoted on said tripod head on a transverse pivot pin engaged therebetween and an arcuate slot together with a clamp bolt through said arcuate slot so that said control unit can be angularly adjusted with respect to said tripod head and said clamp bolt can clamp said control unit to said tripod head in a selected angular position of said control unit and a selected position of said clamp bolt through said arcuate slot.
Claim 6
Dependent Claim
228 words
A portable carrier and easel apparatus comprising: a tripod, legs on said tripod and a head on said tripod; a canvas carrier, said canvas carrier having a central spine and having first and second cross members thereon, said cross members each having a cross rail thereon, at least one of said cross members being adjustable with respect to said central spine so that said cross rails can be adjusted towards and away from each other, said cross rails each having a channel thereon sized to engage over the edge of an artist panel, said cross rails facing each other so that a panel engaged thereby is retained thereby; manual means on said central spine for manual grasp so that said central spine and cross members carried thereon may be manually engaged and carried; and a control unit interconnecting said central spine and said tripod head for supporting said central spine, said control unit being pivoted on said tripod head on a transverse pivot pin engaged therebetween and an arcuate slot together with a clamp bolt through said arcuate slot so that said control unit can be angularly adjusted with respect to said tripod head and said clamp bolt can clamp said control unit to said tripod head in a selected angular position of said control unit and a selected position of said clamp bolt through said arcuate slot.
Claim 7
Dependent Claim
74 words
The portable canvas carrier and easel apparatus of claim 3 wherein said control unit is slidably mounted on said central spine and there is a locking mechanism between said control unit and said central spine so that said central spine can be moved to a selected position on said control unit and locked at the selected position for adjustment of said central spine and said cross members thereon with respect to said tripod head.
Claim 8
Dependent Claim
24 words
The portable canvas carrier and easel apparatus of claim 4 wherein both of said cross members are adjustable with respect to said central spine.
Claim 9
Dependent Claim
66 words
The portable canvas carrier and easel apparatus of claim 4 wherein said central spine is of substantially uniform exterior cross section and said control unit includes a collar which embraces said central spine, a clamp engaged between said collar of said control unit and said central spine so that said central spine can be clamped in said collar and said control unit at a selected position.
Claim 10
Dependent Claim
232 words
A portable carrier and easel apparatus comprising: a tripod, legs on said tripod and a head on said tripod, said tripod head comprising a generally upright plate upon which three tripod legs are separately pivotally mounted, a pivot pin through said upright plate and through said control unit so that said control unit lies on one side of said upright plate, an arcuate slot and a clamp bolt through said arcuate slot, said upright plate and said control unit so that clamping in said clamp bolt clamps said control unit at a preselected angular position with respect to said upright plate; a canvas carrier, said canvas carrier having a central spine and having first and second cross members thereon, said cross members each having a cross rail thereon, at least one of said cross members being adjustable with respect to said central spine so that said cross rails can be adjusted towards and away from each other, said cross rails each having a channel thereon sized to engage over the edge of an artist panel, said cross rails facing each other so that a panel engaged thereby is retained thereby; manual means on said central spine for manual grasp so that said central spine and cross members carried thereon may be manually engaged and carried; and a control unit interconnecting said central spine and said tripod head for supporting said central spine.
Claim 11
Dependent Claim
232 words
A portable carrier and easel apparatus comprising: a tripod, legs on said tripod and a head on said tripod, said tripod head comprising a generally upright plate upon which three tripod legs are separately pivotally mounted, a pivot pin through said upright plate and through said control unit so that said control unit lies on one side of said upright plate, an arcuate slot and a clamp bolt through said arcuate slot, said upright plate and said control unit so that clamping in said clamp bolt clamps said control unit at a preselected angular position with respect to said upright plate; a canvas carrier, said canvas carrier having a central spine and having first and second cross members thereon, said cross members each having a cross rail thereon, at least one of said cross members being adjustable with respect to said central spine so that said cross rails can be adjusted towards and away from each other, said cross rails each having a channel thereon sized to engage over the edge of an artist panel, said cross rails facing each other so that a panel engaged thereby is retained thereby; manual means on said central spine for manual grasp so that said central spine and cross members carried thereon may be manually engaged and carried; and a control unit interconnecting said central spine and said tripod head for supporting said central spine.
Claim 12
Dependent Claim
47 words
The portable canvas carrier and easel apparatus of claim 7 wherein said upright plate is a disc and said arcuate slot is in said disc, said arcuate slot being positioned so that said central spine can be moved from a substantially horizontal to a substantially vertical position.
Claim 13
Dependent Claim
22 words
The portable canvas carrier and easel apparatus of claim 8 wherein both of said cross members are adjusted on said central spine.
Claim 14
Dependent Claim
45 words
The portable canvas carrier and easel apparatus of claim 9 wherein said rails on said cross members have channels therein which face each other, each of said rails having two channels therein of different widths so that panels of different thicknesses can be engaged thereby.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-08-31 | 1991-03-02 | 1991-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-31 | 1995-03-02 | 1995-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-31 | 1999-03-02 | 1999-09-01 | $7700.00 | Window Closed / Lapsed |