GB1394061A - Spiral staircases - Google Patents

Spiral staircases

Info

Publication number
GB1394061A
GB1394061A GB4660171A GB4660171A GB1394061A GB 1394061 A GB1394061 A GB 1394061A GB 4660171 A GB4660171 A GB 4660171A GB 4660171 A GB4660171 A GB 4660171A GB 1394061 A GB1394061 A GB 1394061A
Authority
GB
United Kingdom
Prior art keywords
tread
portions
staircase
spiral
oct
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.)
Expired
Application number
GB4660171A
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.)
Thurston C C R
Original Assignee
Thurston C C R
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 Thurston C C R filed Critical Thurston C C R
Priority to GB4660171A priority Critical patent/GB1394061A/en
Priority to CA153,405A priority patent/CA982778A/en
Publication of GB1394061A publication Critical patent/GB1394061A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • E04F11/032—Spiral stairways supported by a central column
    • 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
    • E04F11/035—Stairways consisting of a plurality of assembled modular parts without further support

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Steps, Ramps, And Handrails (AREA)

Abstract

1394061 Spiral staircases C C R THURSTON 6 Oct 1972 [7 Oct 1971] 46601/71 Heading E1B A step for a spiral staircase comprises a tread 8 a reinforcing member 14 and a plurality of portions 2, 3, 4 and 5, therebetween defining a region at one end of the tread through which a newel post of the staircase passes, at least two of the portions 4 and 5 being integral with cantilever arms for supporting the tread. The tread 8 has an annular member 11 integral therewith and this member together with a further annular member 12 confine the portions 2-5 and in the staircase are compressed by the newel post being tensioned. The elements are preferably made of wood but may be metal or plastics.
GB4660171A 1971-10-07 1971-10-07 Spiral staircases Expired GB1394061A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4660171A GB1394061A (en) 1971-10-07 1971-10-07 Spiral staircases
CA153,405A CA982778A (en) 1971-10-07 1972-10-06 Spiral staircases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4660171A GB1394061A (en) 1971-10-07 1971-10-07 Spiral staircases

Publications (1)

Publication Number Publication Date
GB1394061A true GB1394061A (en) 1975-05-14

Family

ID=10441894

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4660171A Expired GB1394061A (en) 1971-10-07 1971-10-07 Spiral staircases

Country Status (2)

Country Link
CA (1) CA982778A (en)
GB (1) GB1394061A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111677209A (en) * 2020-05-11 2020-09-18 中船澄西船舶修造有限公司 Novel spiral stair tread structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111677209A (en) * 2020-05-11 2020-09-18 中船澄西船舶修造有限公司 Novel spiral stair tread structure

Also Published As

Publication number Publication date
CA982778A (en) 1976-02-03

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Legal Events

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