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SE397379B - Hopvikbar trapplektare - Google Patents

Hopvikbar trapplektare

Info

Publication number
SE397379B
SE397379B SE7214980A SE1498072A SE397379B SE 397379 B SE397379 B SE 397379B SE 7214980 A SE7214980 A SE 7214980A SE 1498072 A SE1498072 A SE 1498072A SE 397379 B SE397379 B SE 397379B
Authority
SE
Sweden
Prior art keywords
foldable staircase
staircase
foldable
Prior art date
Application number
SE7214980A
Other languages
English (en)
Inventor
J A Wenger
D L Paine
I E Dorschner
Original Assignee
Wenger Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wenger Corp filed Critical Wenger Corp
Publication of SE397379B publication Critical patent/SE397379B/sv

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H3/00—Buildings or groups of buildings for public or similar purposes; Institutions, e.g. infirmaries or prisons
    • E04H3/10—Buildings or groups of buildings for public or similar purposes; Institutions, e.g. infirmaries or prisons for meetings, entertainments, or sports
    • E04H3/12—Tribunes, grandstands or terraces for spectators
    • E04H3/126—Foldable, retractable or tiltable tribunes
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
    • E06C1/397—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders characterised by having wheels, rollers, or runners

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)
  • Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Table Equipment (AREA)
SE7214980A 1971-11-18 1972-11-17 Hopvikbar trapplektare SE397379B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20013471A 1971-11-18 1971-11-18

Publications (1)

Publication Number Publication Date
SE397379B true SE397379B (sv) 1977-10-31

Family

ID=22740471

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7214980A SE397379B (sv) 1971-11-18 1972-11-17 Hopvikbar trapplektare

Country Status (6)

Country Link
US (1) US3747708A (sv)
JP (1) JPS5610435B2 (sv)
CA (1) CA968120A (sv)
DE (1) DE2256560A1 (sv)
GB (1) GB1379412A (sv)
SE (1) SE397379B (sv)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974894A (en) * 1975-08-18 1976-08-17 Wenger Corporation Portable riser
US4074791A (en) * 1976-03-16 1978-02-21 Inman Johnny K Emergency fire net
EP0381674B1 (en) * 1987-07-31 1993-03-31 Sico Incorporated Mobile folding choral riser
US4934113A (en) * 1988-09-28 1990-06-19 Robert Hall Portable stage with telescopic stage sections
US5357876A (en) * 1991-11-07 1994-10-25 Wenger Corporation Portable hinged riser
US5787647A (en) * 1996-06-07 1998-08-04 Wenger Corporation Portable riser
US6729075B2 (en) 2000-10-19 2004-05-04 Wenger Corporation Audience seating system
US6763912B2 (en) 2002-08-29 2004-07-20 Century Group, L.L.C. Modular stair assembly
WO2004065267A2 (en) * 2003-01-21 2004-08-05 Wenger Corporation Riser cart
US7546705B1 (en) * 2003-02-26 2009-06-16 Midwest Folding Products Portable riser apparatus having a lifting and locking assembly
US7942419B2 (en) * 2007-12-07 2011-05-17 Gelzinis Anthony C Portable rebound ball game
US9326611B1 (en) * 2014-02-21 2016-05-03 Hussey Seating Company Portable bleacher with active descent and lift mechanism
US9127473B1 (en) * 2014-10-28 2015-09-08 Darrel Scipio Home entertainment stage
US20170016276A1 (en) * 2015-07-18 2017-01-19 Ronald F. Seiler Foldable Platform Step Ladder

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2598983A (en) * 1949-06-30 1952-06-03 Walter C Ellis Collapsible stand
US3230907A (en) * 1962-08-22 1966-01-25 Univ Iowa State Res Found Inc Portable bleacher unit

Also Published As

Publication number Publication date
JPS5610435B2 (sv) 1981-03-07
DE2256560A1 (de) 1973-05-30
JPS4862560A (sv) 1973-08-31
US3747708A (en) 1973-07-24
CA968120A (en) 1975-05-27
GB1379412A (en) 1975-01-02

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