Playground carriage
US5443012A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1994 |
| Grant date | Aug 22, 1995 |
| Priority date | — |
| Expiry date | Mar 11, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63G21/20
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In accordance with the present invention, a playground carriage (10) is provided for moving people (100) from one play area to another. The playground carriage comprises a rotatable support pipe (12) having a first end (14) and a second end (16). The support pipe extends between a first vertical column (18) and a second vertical column (20). A manually-operated crank (22) having a first end (24) and a second end (26) is also included. The manually-operated crank extends between the first vertical column and a third vertical column (48). The first end of the crank is coupled to the first end of the support pipe so that manually turning the crank rotates the support pipe. A carriage (28) for carrying people is mounted to the support pipe. The carriage is advanced along the support pipe by a carrier (30). The carrier comprises a set of wheels (31) oriented along an outer surface (34) of the support pipe so that the wheels follow a helical, thread-like path along the support pipe and, thus, propel the carrier along the support pipe. A plurality of handrails (36) extend downwardly from the carrier and attach to a platform (37) so that the platform is suspended below the carrier. A prote…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.