Modular barrier system
US9821216B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2017 |
| Grant date | Nov 21, 2017 |
| Priority date | — |
| Expiry date | Jan 23, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63C2019/085
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A portable ice rink includes a wall formed of multiple wall members linearly disposed adjacent to one another to form a piecewise continuous wall that encloses a desired area, and also includes a chain of links disposed on the outside of the wall members for reinforcement. The rink may further include a waterproof tarp extending underneath the wall members and folded upwards along the outer side of the wall, with its edge tied to the change of links. The tarp can contain water which then freezes to form a skating surface. Curved wall members are provided to form a rink with round corners. Each wall member is a discrete unit, made of molded plastic, and having a hollow interior which can be filled with water (or other ballast). Each wall member is designed with stiffening features to maintain the flatness of its inner surface after filling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.