Patent US4322005A successfully refreshed from Google Patents.
US4322005A
Expired / Lapsed
US
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Display stacker with biased pivoted trays
Assignee: DISPLAYCO DIVISION OF SCHIFFENHAUS PACKAGING Corp A CORP OF NJ
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Filing: 1981-03-27
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Granted: 1982-03-30
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Expires: 2001-03-27
Abstract
Abstract A corrugated paper display stacker having a plurality of vertically arranged springs and upwardly biased pivoted trays secured to a back panel. A double acting torsion spring having hooks on protruding fingers that are inserted into the fluting of the tray and a stablizing U-shape loop on the other side of the spring maintain each of the trays in a vertical position when not loaded with merchandise. The torsion spring is held to the back panel by securing means in the form of a dowel.
Inventors
- 👤 David Robertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 02:53
CPC Classifications
A; A47; A47F; A47F5/00; A47F5/10; A47F5/11; A47F5/112; A47F5/116
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
158 words
A display stacker formed from reinforced paper material comprising a base to provide support for the stacker, a back panel on said base and rising vertically, side panels secured to said base and protruding outwardly from said back panel, a plurality of trays vertically arranged along said back panel for pivotal movement between said side panels, each said tray being secured to said back panel by a torsion spring, said torsion spring having a pair of fingers and each said fingers having an end thereof formed into a hook, and each said hook being passed through an end of said tray to secure said tray to said spring to permit said tray to pivot about said back panel whereby said fingers continually urge said tray upwardly toward a parallel position relative to said back panel when said tray remains unloaded and whereby said tray pivots downwardly toward a horizontal position against said spring for loading of said tray.
Claim 2
Dependent Claim
158 words
A display stacker formed from reinforced paper material comprising a base to provide support for the stacker, a back panel on said base and rising vertically, side panels secured to said base and protruding outwardly from said back panel, a plurality of trays vertically arranged along said back panel for pivotal movement between said side panels, each said tray being secured to said back panel by a torsion spring, said torsion spring having a pair of fingers and each said fingers having an end thereof formed into a hook, and each said hook being passed through an end of said tray to secure said tray to said spring to permit said tray to pivot about said back panel whereby said fingers continually urge said tray upwardly toward a parallel position relative to said back panel when said tray remains unloaded and whereby said tray pivots downwardly toward a horizontal position against said spring for loading of said tray.
Claim 3
Dependent Claim
19 words
The display stacker of claim 1 including, said torsion spring having a stabilizing means positioned against said back panel.
Claim 4
Dependent Claim
57 words
The display stacker of claim 1 including, said torsion spring having a pair of coils secured to said fingers distal to said hooks, said coils being inserted through said back panel and securing means in contact with said back panel securing said spring to said back panel while permitting pivotal movement of said fingers and said tray.
Claim 5
Dependent Claim
33 words
The display stacker of claim 3 including, said securing means being a dowel means inserted into said coils, said dowel means being on the side of said back panel opposite to said fingers.
Claim 6
Dependent Claim
18 words
The display stacker of claim 2 including, said stabilizing means being a connecting loop extending between said fingers.
Claim 7
Dependent Claim
38 words
The display stacker of claims 1, 2, 3, 4 or 5 including, said display stacker being formed from corrugated paper having conventional fluting and said fingers of said spring being passed through said tray parallel to said fluting.
Claim 8
Dependent Claim
29 words
The display stacker of claim 6 including, said tray being provided with holding means to receive said hooks whereby to prevent said tray from being removed from said stacker.
Claim 9
Dependent Claim
30 words
The display stacker of claim 7 including, said connecting loop being a planar U-shape having a cross member and a pair of coextensive spaced legs connected to said cross member.
Claim 10
Dependent Claim
46 words
The display stacker of claim 3 including, said torsion spring having a stabilizing means positioned against said back panel, and said display stacker being formed from corrugated paper having conventional fluting and said fingers of said spring being passed through said tray parallel to said fluting.
Claim 11
Dependent Claim
41 words
The display stacker of claim 9 including, said tray being provided with holding means to receive said hooks whereby to prevent said tray from being removed from said stacker, and said stabilizing means being a connecting loop extending between said fingers.
Claim 12
Dependent Claim
133 words
The display stacker of claim 1 including, said torsion spring having a stabilizing means positioned against said back panel, said stabilizing means being a connecting loop extending between said fingers, said torsion spring having a pair of coils secured to said fingers distal to said hooks, said coils being inserted through said back panel and securing means in contact with said back panel securing said spring to said back panel while permitting pivotal movement of said fingers and said tray, said securing means being a dowel means inserted into said coils, said dowel means being on the side of said back panel opposite to said fingers, and said display stacker being formed from corrugated paper having conventional fluting and said fingers of said spring being passed through said tray parallel to said fluting.
Claim 13
Dependent Claim
21 words
The display stacker of claim 1 including, said side panels being folded back substantially the entire length of said side panels.
Claim 14
Dependent Claim
32 words
The display stacker of claim 1 including, a rear panel being spaced behind said back panel and positioned parallel to said back panel, said rear panel being integral with said side panels.
Claim 15
Dependent Claim
30 words
The display stacker of claim 13 including, tab means on said back panel and corresponding receiving slots on said rear panel to secure said back panel to said rear panel.
Claim 16
Dependent Claim
21 words
The display stacker of claim 1 including, each said tray being unsupported on said back panel except for said torsion spring.
Claim 17
Dependent Claim
29 words
The display stacker of claim 1 including, said trays being vertically spaced by an increment substantially equal to the height on the trays of the goods to be displayed.
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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) | 1985-03-29 | 1985-09-28 | 1986-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-29 | 1989-09-28 | 1990-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-29 | 1993-09-28 | 1994-03-30 | $7700.00 | Window Closed / Lapsed |