GB2023204A - Flight of Steps with Treads Held Level by Parallelogram Linkage; Sledge; Trolley; Shelves - Google Patents

Flight of Steps with Treads Held Level by Parallelogram Linkage; Sledge; Trolley; Shelves

Info

Publication number
GB2023204A
GB2023204A GB7923586A GB7923586A GB2023204A GB 2023204 A GB2023204 A GB 2023204A GB 7923586 A GB7923586 A GB 7923586A GB 7923586 A GB7923586 A GB 7923586A GB 2023204 A GB2023204 A GB 2023204A
Authority
GB
United Kingdom
Prior art keywords
rails
treads
parallelogram linkage
sledge
trolley
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB7923586A
Other versions
GB2023204B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hucker N L
Original Assignee
Hucker N L
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 Hucker N L filed Critical Hucker N L
Priority to GB7923586A priority Critical patent/GB2023204B/en
Publication of GB2023204A publication Critical patent/GB2023204A/en
Application granted granted Critical
Publication of GB2023204B publication Critical patent/GB2023204B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/02—Stairways; Layouts thereof
    • E04F11/022—Stairways; Layouts thereof characterised by the supporting structure
    • E04F11/025—Stairways having stringers
    • E04F11/0255—Stairways having stringers having adjustable gradient
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/02—Stairways; Layouts thereof
    • E04F11/04—Movable stairways, e.g. of loft ladders which may or may not be concealable or extensible
    • E04F11/06—Movable stairways, e.g. of loft ladders which may or may not be concealable or extensible collapsible, e.g. folding, telescopic
    • E04F11/062—Movable stairways, e.g. of loft ladders which may or may not be concealable or extensible collapsible, e.g. folding, telescopic folding

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Handcart (AREA)

Abstract

In one of several embodiments, a staircase has parallel metal rails 12, 14 attached to a wooden string 10. Angle section tread supports 16 are pivotably attached between the rails 12, 14 to form a parallelogram linkage. Before the rails 12, 14 are secured to the string 10, therefore, the parallelogram linkage permits adjustment of the angle of inclination of the staircase while still maintaining the tread supports 16 horizontal. This enables the staircase to fit stairwells constructed with wider tolerances than hitherto. Once the rails 12, 14 have been secured, treads 32 are affixed between opposing tread supports 16, and risers 52 are fitted. In other embodiments, the steps may be used, collapsed, as a sledge, or, with attached wheels, as a trolley; or, with vertical rails and horizontal treads, as shelving. <IMAGE>
GB7923586A 1978-04-07 1979-07-06 Flight of steps with treads held level by parallelogram linkage sledge trolly shelves Expired GB2023204B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7923586A GB2023204B (en) 1978-04-07 1979-07-06 Flight of steps with treads held level by parallelogram linkage sledge trolly shelves

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1370478 1978-04-07
GB7923586A GB2023204B (en) 1978-04-07 1979-07-06 Flight of steps with treads held level by parallelogram linkage sledge trolly shelves

Publications (2)

Publication Number Publication Date
GB2023204A true GB2023204A (en) 1979-12-28
GB2023204B GB2023204B (en) 1982-09-15

Family

ID=26249943

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7923586A Expired GB2023204B (en) 1978-04-07 1979-07-06 Flight of steps with treads held level by parallelogram linkage sledge trolly shelves

Country Status (1)

Country Link
GB (1) GB2023204B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2134581A (en) * 1983-01-14 1984-08-15 Milton Colson Ladder at least partially enclosing climber; ladder convertible to furniture
WO1985001769A1 (en) * 1983-10-14 1985-04-25 Nyman Aoke Adjustable staircase
US4959935A (en) * 1989-09-25 1990-10-02 Stob H Richard Adjustable stairway
GB2253559A (en) * 1991-03-13 1992-09-16 William Blethyn Denison Folding table
EP0590767A2 (en) * 1992-07-31 1994-04-06 Wenger Corporation Modular portable stage system
CN112177257A (en) * 2020-09-30 2021-01-05 温州源铭振跃科技有限公司 Bidirectional-use temporary ladder capable of being stored

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2134581A (en) * 1983-01-14 1984-08-15 Milton Colson Ladder at least partially enclosing climber; ladder convertible to furniture
WO1985001769A1 (en) * 1983-10-14 1985-04-25 Nyman Aoke Adjustable staircase
US4959935A (en) * 1989-09-25 1990-10-02 Stob H Richard Adjustable stairway
GB2253559A (en) * 1991-03-13 1992-09-16 William Blethyn Denison Folding table
EP0590767A2 (en) * 1992-07-31 1994-04-06 Wenger Corporation Modular portable stage system
EP0590767A3 (en) * 1992-07-31 1994-04-13 Wenger Corporation Modular portable stage system
US5848501A (en) * 1992-07-31 1998-12-15 Wenger Corporation Modular portable system
US6106186A (en) * 1992-07-31 2000-08-22 Wenger Corporation Modular portable stage system
CN112177257A (en) * 2020-09-30 2021-01-05 温州源铭振跃科技有限公司 Bidirectional-use temporary ladder capable of being stored
CN112177257B (en) * 2020-09-30 2021-12-07 温州源铭振跃科技有限公司 Bidirectional-use temporary ladder capable of being stored

Also Published As

Publication number Publication date
GB2023204B (en) 1982-09-15

Similar Documents

Publication Publication Date Title
GB1536444A (en) Apparatus suitable for use as stairways stepladders and the like
ES271892Y (en) PROVISIONAL STAIRCASE OF ASSEMBLABLE ELEMENTS.
GB1483934A (en) Apparatus and method for use in training golfers
GB2023204A (en) Flight of Steps with Treads Held Level by Parallelogram Linkage; Sledge; Trolley; Shelves
SE8305670D0 (en) ADJUSTABLE STEPS
FR2341716A1 (en) Retractable staircase fixed into two positions - consists of parallel girders on horizontal axle, with balustrade and two sets of steps
ES2034859T3 (en) MULTIPLE STAIRCASE STAIRCASE.
GB1455924A (en) Wooden spiral staircase
DE3275573D1 (en) Awning for trapeziform windows
US1393461A (en) Convertible rolling chair
FR2311154A1 (en) Adjustable height folding scaffolding - consists of platform with guard rail, end frames, stays and wheeled feet
EP0256976A3 (en) Mobile stairs for aircraft
NL7513895A (en) Trolley with frame, platform and handgrip arm - has liftable platform holding wheels on hinged stays in position when lowered
GB1046937A (en) Improvements in or relating to staircase brackets
FR2309685A1 (en) Wooden staircase with standard treads and supports - has angle of treads adjusted to suit slope of staircase
GB1303090A (en)
GB589443A (en) Improvements relating to scaffolding
GB1368064A (en) Combined step ladders and play apparatus
GB1019275A (en) Improvements in and relating to ladders supported to travel along a rail
CN208040292U (en) A kind of garden ladder for garden maintenance
JPS5539573A (en) Motor grader
SE8505697D0 (en) TVAHJULSKERRA
FR2400090A1 (en) Prefabricated staircase to suit two alternative slopes - has two stringers at ends of treads, connected by tongue and groove joint
ATE105900T1 (en) STAIR PANEL FOR A SELF-SPEARING STAIRWAY WITH A CENTRAL RAIL.
GB572584A (en) Improvements relating to height adjustable platforms

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee