Wooden spiral staircase

Details Wooden spiral staircase Wooden spiral staircase

1975-01-27

1976-06-22

Purser, Ernest R.

Static structures (e.g., buildings)

Stepped; e.g., stair

Helical type

E04F 1100

Patent

active

039642224

ABSTRACT:
A wooden spiral staircase with a central column and treads and riser members disposed spirally around said column. The risers have the shape of an asymmetric "T" and are let into a subjacent tread, a superjacent tread, and the central column, thereby serving to support the treads, which are not directly connected to the central column, but are each additionally connected to a superjacent tread and a subjacent tread at their ends remote from the central column.

REFERENCES:
patent: 314374 (1885-03-01), Gilfillan
patent: 367296 (1887-07-01), Heidland
patent: 3430729 (1969-03-01), Miceli
patent: 3482364 (1969-12-01), Albrektson et al.
patent: 3513547 (1970-05-01), Suckno

Affiliated with

Also associated with

Rating

Wooden spiral staircase does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2280484