Patent US4819902A successfully refreshed from Google Patents.
US4819902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible music stand
Assignee: WENGER Corp 555 PARK DRIVE OWATONNA MINNESOTA 55060 A CORP OF MINNESOTA
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Filing: 1987-07-16
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Granted: 1989-04-11
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Expires: 2007-07-16
Abstract
Abstract A music stand that can be collapsed into an easily transportable configuration is disclosed. The stand includes a telescoping stem supported in an upright position by a collapsible base. A music rack is attached to the stem by a support arm, enabling the rack to be pivoted relative to the stem about two, spaced apart, generally horizontal pivot axes.
Inventors
- 👤 Kari J. Wenger
- 👤 Eugene N. Reshanov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:25
CPC Classifications
A; A47; A47B; A47B19/00; A47B19/002
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
231 words
A collapsible stand for supporting and displaying sheet music or the like, comprising: a generally upright support member having a generally vertical stem rod and a generally horizontal stem tee carried at the top of said stem rod, said stem tee extending radially outwardly to opposed sides of said stem rod at a distance sufficient to present a hand graspable stem tee handle; a rack member adapted for carrying said sheet music or the like; an elongated rack member mounting assembly having a first end and a second, opposed end; first pivot means for pivotally coupling said rack member first end to said stem tee about a first, generally horizontal pivot axis; and second pivot means for pivotally coupling said rack member second end to said rack member about a second, generally horizontal pivot axis, said mounting assembly comprising first and second, spaced apart arms, each of said arms extending between said stem tee and said rack member, and each of said arms including a first end pivotally coupled to said stem tee by said first pivot means and a second end pivotally coupled to said rack member by said second pivot means, whereby said rack member can be shifted to a collapsed position abutting said stem rod without said arms coming into interfering contact with said stem rod and said stand can be easily lifted by said stem tee handle.
Claim 2
Dependent Claim
231 words
A collapsible stand for supporting and displaying sheet music or the like, comprising: a generally upright support member having a generally vertical stem rod and a generally horizontal stem tee carried at the top of said stem rod, said stem tee extending radially outwardly to opposed sides of said stem rod at a distance sufficient to present a hand graspable stem tee handle; a rack member adapted for carrying said sheet music or the like; an elongated rack member mounting assembly having a first end and a second, opposed end; first pivot means for pivotally coupling said rack member first end to said stem tee about a first, generally horizontal pivot axis; and second pivot means for pivotally coupling said rack member second end to said rack member about a second, generally horizontal pivot axis, said mounting assembly comprising first and second, spaced apart arms, each of said arms extending between said stem tee and said rack member, and each of said arms including a first end pivotally coupled to said stem tee by said first pivot means and a second end pivotally coupled to said rack member by said second pivot means, whereby said rack member can be shifted to a collapsed position abutting said stem rod without said arms coming into interfering contact with said stem rod and said stand can be easily lifted by said stem tee handle.
Claim 3
Dependent Claim
25 words
The apparatus as claimed in claim 1, said stem rod comprising an extensible assembly whereby the height of said support member can be selectively adjusted.
Claim 4
Dependent Claim
50 words
The apparatus as claimed in claim 2, said stem rod comprising a first stem rod element and a second stem rod element shiftably received by said first stem rod element, and means for selectively locking the position of said second stem rod element relative to said first stem rod element.
Claim 5
Dependent Claim
27 words
The apparatus as claimed in claim 1, including a base member operably coupled to said support member for maintaining said support member in a generally upright orientation.
Claim 6
Dependent Claim
32 words
The apparatus as claimed in claim 4, said base member including a first foot member pivotally coupled to said support member for selective shifting between a stored position and an extended position.
Claim 7
Dependent Claim
44 words
The apparatus as claimed in claim 4, said support member defining a generally vertical support member axis, said base member including second and third foot members fixedly coupled to said support member and oriented in a plane generally perpendicular to said support member axis.
Claim 8
Dependent Claim
39 words
The apparatus as claimed in claim 6, said second and third foot members being generally linearly aligned with each other and oriented generally perpendicular to said first foot member when said first foot member is in said extended position.
Claim 9
Dependent Claim
55 words
The appartaus as claimed in claim 1, said mounting assembly being shiftable through a mounting element arcuate path of travel about said first pivot axis, said stand further including mounting assembly positioning means for selectively maintaining said mounting assembly at a selected orientation relative to said support member along said mounting assembly path of travel.
Claim 10
Dependent Claim
26 words
The apparatus as claimed in claim 8, said mounting assembly positioning means including adjustable friction means for selectively frictionally coupling said arms to said stem tee.
Claim 11
Dependent Claim
55 words
The apparatus as claimed in claim 9, said stem tee comprising a support tube, said friction means including an elongated screw extending through one of said arms and said tube and threadably received by the other of said arms whereby said arms may be drawn together and clamped against said tube by tightening said screw.
Claim 12
Dependent Claim
17 words
The apparatus as claimed in claim 10, including means for inhibiting the threadable rotation of said screw.
Claim 13
Dependent Claim
24 words
The apparatus as claimed in claim 11, said means for inhibiting threadable rotation of said screw comprising a coil spring carried by said screw.
Claim 14
Dependent Claim
60 words
The apparatus as claimed in claim 1, said rack member shiftable through a rack member arcuate path of travel about said second pivot axis, said stand further including rack member positioning means operably coupled to said rack member for selectively maintaining said rack member at a selected orientation relative to said mounting assembly along said rack member path of travel.
Claim 15
Dependent Claim
33 words
The apparatus as claimed in claim 13, said rack member positioning means including adjustable friction means operably coupled to said mounting assembly for selectively frictionally coupling said rack member to said mounting assembly.
Claim 16
Dependent Claim
40 words
The apparatus as claimed in claim 14, said rack member including an arm receiving member interposed between the second ends of said arms, said friction means comprising means for urging said arms into frictional engagement with said arm receiving member.
Claim 17
Dependent Claim
56 words
The apparatus as claimed in claim 15, said arm receiving member comprising a support tube, said friction means including an elongated screw extending through one of said arms and said tube and threadably received by the other of said arms whereby said arms may be drawn together and clamped against said tube by tightening said screw.
Claim 18
Dependent Claim
17 words
The apparatus as claimed in claim 16, including means for inhibiting the threadable rotation of said screw.
Claim 19
Dependent Claim
23 words
The apparatus as claimed in claim 16, said means for inhibiting rotation of said screw comprising a coiled spring carried by said screw.
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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) | 1992-04-10 | 1992-10-10 | 1993-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-10 | 1996-10-10 | 1997-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-10 | 2000-10-10 | 2001-04-11 | $7700.00 | Window Closed / Lapsed |