US4534473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display stand
Assignee: PACIFIC DISPLAY CORP
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Filing: 1983-12-28
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Granted: 1985-08-13
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Expires: 2003-12-28
Abstract
Abstract A rotating stand or rack is provided for displaying various items of merchandise, such as greeting cards, paperback books, cassettes, cartridges, floppy disks, folders, and the like. The stand includes an elongated shaft mounted on the base for rotation around its longitudinal axis. The shaft extends away from the base and has a plurality of grooves in its outer surface extending along its length. One or more shelves are mounted on the shaft. Each shelf has an opening through its center and a plurality of guides around the shelf which extend into the shelf opening along its height. The number and positioning of the guides corresponds to the number and positioning of the shaft grooves so that when the shelf is on the shaft, the shelf guides are in the shaft grooves. The size of the grooves and guides are such that they provide a press or friction fit with each other to thereby hold the shelf firmly in position on the shaft.
Inventors
- 👤 William L. Post
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:17
CPC Classifications
A; A47; A47F; A47F5/00; A47F5/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
130 words
A display rack comprising: a base; an elongated shaft rotatably mounted on the base extending away from the base, the elongated shaft having at least one groove in its outer surface extending along the lenght of the shaft; at least one shelf mounted on the shaft, such a shelf having an opening therethrough; and at least one elongated guide on the shelf extending into the opening from the side of the opening, such an elongated guide being along the height of the opening and aligned for sliding engagement in the shaft groove when the shelf is being mounted on the shaft so that when the shelf is in position on the shaft, the shaft is throught the shelf opening and the shelf guide is frictionally engaged in the shaft groove.
Claim 2
Dependent Claim
130 words
A display rack comprising: a base; an elongated shaft rotatably mounted on the base extending away from the base, the elongated shaft having at least one groove in its outer surface extending along the lenght of the shaft; at least one shelf mounted on the shaft, such a shelf having an opening therethrough; and at least one elongated guide on the shelf extending into the opening from the side of the opening, such an elongated guide being along the height of the opening and aligned for sliding engagement in the shaft groove when the shelf is being mounted on the shaft so that when the shelf is in position on the shaft, the shaft is throught the shelf opening and the shelf guide is frictionally engaged in the shaft groove.
Claim 3
Dependent Claim
19 words
A display rack as claimed in claim 1 wherein the shelf opening is through the center of the shelf.
Claim 4
Dependent Claim
59 words
A display rack as claimed in claim 1 wherein: The elongated shaft has four such enlongated grooves in its outer surface and the distance between each pair of adjacent grooves is about equal; and the shelf includes four such elongated guides wherein each such guide is engaged in an associated shaft groove when the shelf is on the shaft.
Claim 5
Dependent Claim
70 words
A display rack as claimed in claim 1 wherein such a shaft groove has a V-shaped cross section with the bottom surface of the V being generally flat, and wherein such an elongated guide has a generally flat surface facing the shelf opening so that when the shelf is mounted on the shaft the generally flat surface of the elongated guide frictionally engages the generally flat surface of the groove.
Claim 6
Dependent Claim
110 words
A display rack as claimed in claim 1 wherein: the elongated shaft has four such elongated grooves in its outer surface and the distance between each pair of adjacent grooves is about equal, each such shaft groove having a V-shaped cross section with the bottom surface of the V being generally flat; and the shelf includes four such elongated guides positioned for engagement in associated shaft grooves, wherein each such elongated guide has a generally flat surface facing the shelf opening so that when the shelf is mounted on the shaft the generally flat surface of such an elongated guide frictionally engages the generally flat surface of its associated groove.
Claim 7
Dependent Claim
132 words
A display rack according to claim 5 wherein before the shelf is mounted in the shaft, the distance between the flat surfaces of each pair of opposing shelf guides is from about 0.010 of an inch to about 0.100 of an inch less than the distance between the flat bottom surfaces of each pair of opposing shaft grooves to thereby provide that when the shelf is being mounted on the shaft the guides compress the shaft so that the distance between the flat bottom surfaces of each such pair of opposing shaft grooves is about equal to the distance between the flat surfaces of the shelf guides to thereby provide a friction fit between the flat surface of each such shelf guide and the flat bottom surface of the associated shelf groove.
Claim 8
Dependent Claim
205 words
A display rack comprising: a base; an elongated shaft rotatably mounted on the base extending away from the base, the elongated shaft having four grooves in its outer surface wherein the grooves are equidistantly spaced apart from each other around the perimeter of the shaft and extend along the length of the shaft, each such groove having a V-shaped cross section with the bottom surface of the V being generally flat; at least one shelf mounted on the shaft, such a shelf having an opening throught about its center and including four elongated guides spaced apart from each other around the perimeter of the opening, wherein each such elongated guide extends into the opening from the side of the opening, is along the height of the opening, and is aligned for sliding engagement in one of the grooves in the outer surface of the shaft when the shelf is being mounted on the shaft, each such guide having a generally flat surface facing the shelf opening so that when the shelf is mounted on the shaft, the shaft is through the shelf opening and the generally flat surface of each such shelf guide frictionally engages the generally flat bottom surface of an associated shaft groove.
Claim 9
Dependent Claim
205 words
A display rack comprising: a base; an elongated shaft rotatably mounted on the base extending away from the base, the elongated shaft having four grooves in its outer surface wherein the grooves are equidistantly spaced apart from each other around the perimeter of the shaft and extend along the length of the shaft, each such groove having a V-shaped cross section with the bottom surface of the V being generally flat; at least one shelf mounted on the shaft, such a shelf having an opening throught about its center and including four elongated guides spaced apart from each other around the perimeter of the opening, wherein each such elongated guide extends into the opening from the side of the opening, is along the height of the opening, and is aligned for sliding engagement in one of the grooves in the outer surface of the shaft when the shelf is being mounted on the shaft, each such guide having a generally flat surface facing the shelf opening so that when the shelf is mounted on the shaft, the shaft is through the shelf opening and the generally flat surface of each such shelf guide frictionally engages the generally flat bottom surface of an associated shaft groove.
Claim 10
Dependent Claim
130 words
A display rack according to claim 7 wherein before the shelf is mounted in the shaft, the distance between the flat surfaces of each pair of opposing shelf guides is from about 0.010 of an inch to about 0.100 of an inch less than the distance between the flat bottom surfaces of each pair of opposing shaft grooves so that when the shelf is being mounted on the shaft the guides compress the shaft so that the distance between the flat bottom surfaces of each such pair of opposing shaft grooves is about equal to the distance between the flat surfaces of the shelf guides to thereby provide a friction fit between the flat surface of each such shelf guide and the flat bottom surface of the associated shelf groove.
References Cited (Backward Citations)
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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) | 1988-08-12 | 1989-02-11 | 1989-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-12 | 1993-02-11 | 1993-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-12 | 1997-02-11 | 1997-08-13 | $7700.00 | Window Closed / Lapsed |