Portable riser

Details Portable riser Portable riser

1998-04-03

1999-05-11

Kent, Christopher

Static structures (e.g., buildings)

With stadium or auditorium feature

52 7, 52 64, 52183, 523112, 524831, E04H3/28

Patent

active

059015055

ABSTRACT:
The choral riser of the present invention is adapted to be supported on a stage surface. The choral riser has a base that presents two spaced apart base supports, each of the base support having a first and a second spaced apart pivot point. A first step member has a step pivot point and a base pivot point that is operably pivotally coupled at the base pivot point to the base at the base first pivot point and has at least one step presented thereon. A second step member has a step pivot point and a link pivot point that is operably pivotally coupled at the step pivot point to the first step member at the first step member step pivot point and has a plurality of steps presented thereon. A bar link member is operably pivotally coupled at a first end pivot point to the second step member bar link pivot point. The bar link member is operably pivotally coupled at a second end pivot point to the base second pivot point. The first and second step members are pivotable between a stowed configuration, with at least one of the steps of the first step member facing at least one of the steps of the second step member, and an operational configuration in which the steps of the first and second step members present an ascending succession of steps. The steps are readily reversible to change the stage presentation form.

REFERENCES:
patent: Re19373 (1934-11-01), Wetzel
patent: Re30830 (1981-12-01), Wenger et al.
patent: D304499 (1989-11-01), Rogers et al.
patent: D307186 (1990-04-01), Rogers et al.
patent: 445629 (1891-02-01), Osgood
patent: 1715885 (1929-06-01), Annand et al.
patent: 1800610 (1931-04-01), Edwards
patent: 1823484 (1931-09-01), Blumenthal
patent: 2054960 (1936-09-01), Adamson
patent: 2061235 (1936-11-01), Horn
patent: 2147564 (1939-02-01), Vance
patent: 2205624 (1940-06-01), Horn
patent: 2263058 (1941-11-01), Weilert
patent: 2362170 (1944-11-01), Swaisgood
patent: 2585763 (1952-02-01), Gasner et al.
patent: 2588783 (1952-03-01), Wetzel
patent: 2624590 (1953-01-01), Tilton
patent: 2704383 (1955-03-01), Berg
patent: 2717631 (1955-09-01), Howe
patent: 2780506 (1957-02-01), Howe
patent: 2798652 (1957-07-01), Easton
patent: 2841831 (1958-07-01), Mackintosh
patent: 2983968 (1961-05-01), Wurn
patent: 3103707 (1963-09-01), Lappin et al.
patent: 3142871 (1964-08-01), Harms
patent: 3593821 (1971-07-01), Lister
patent: 3620564 (1971-11-01), Wenger
patent: 3747706 (1973-07-01), Paine et al.
patent: 3747708 (1973-07-01), Wenger et al.
patent: 3748798 (1973-07-01), Mackintosh
patent: 3869835 (1975-03-01), Mackintosh
patent: 3908787 (1975-09-01), Wenger et al.
patent: 3914909 (1975-10-01), McNeal
patent: 3934281 (1976-01-01), Brindisi
patent: 4011695 (1977-03-01), Simmons, Sr.
patent: 4327650 (1982-05-01), Bue
patent: 4361991 (1982-12-01), Wiese
patent: 4412403 (1983-11-01), LeFranc et al.
patent: 4611439 (1986-09-01), Graham, Jr.
patent: 4768617 (1988-09-01), Mason et al.
patent: 4917217 (1990-04-01), Rogers et al.
patent: 4949649 (1990-08-01), Terres et al.
patent: 4979340 (1990-12-01), Wilson et al.
patent: 5050353 (1991-09-01), Rogers et al.
patent: 5323563 (1994-06-01), Rogers et al.
patent: 5349789 (1994-09-01), Andert et al.
patent: 5464236 (1995-11-01), Benting et al.
Catalog entitled "Stage Right--1994 Portable Staging, Risers and Acoustical Shells Catalog".
Text entitled "Mechanism Design--Analysis and Synthesis", vol. I, Arthur G. Erdman/George N. Sandor.
SICO.RTM. Mobile Folding Choral Risers four page text.

Affiliated with

Also associated with

Rating

Portable riser does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Portable riser, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Portable riser will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-238844