Title:
FOLDABLE LADDER -LIKE STAIRS
Document Type and Number:
WIPO Patent Application WO/2011/087385
Kind Code:
A4
Abstract:
Foldable ladder- like stairs, comprising stairs segments (2, 3, 4) moveable with relation to each other, wherein the uppermost segment (2) is rotationally connected with a frame mounted in a ceiling and the stairs segments are positioned within the frame in the stairs closed state, where the stairs are preferably provided with a mechanism, preferably a spring mechanism, that supports lifting folded stairs up to the stairs closed state and at least partially counterbalances the weight of the stairs during opening thereof. The stairs comprise a spring that supports lifting up of the stairs segments (3, 4, 7) other than the uppermost segment (2) during folding these segments with the uppermost segment and at least partially counterbalances the weight of these segments during unfolding the stairs, wherein the spring is arranged inside the handrail (5).
Inventors:
KRASINSKI BOGUSLAW (PL)
KACZMARSKI BERNARD (PL)
KACZMARSKI BERNARD (PL)
Application Number:
PCT/PL2011/000004
Publication Date:
January 26, 2012
Filing Date:
January 12, 2011
Export Citation:
Assignee:
FAKRO PP SPOLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA (PL)
KRASINSKI BOGUSLAW (PL)
KACZMARSKI BERNARD (PL)
KRASINSKI BOGUSLAW (PL)
KACZMARSKI BERNARD (PL)
International Classes:
E04F11/06
Attorney, Agent or Firm:
KANCELARIA PATENTOWA ŁUKASZYK (Szymonul. Głowackiego 8/6, Katowice, PL)
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