Trolley and track
US9879457B1 · kind B1 · utility
3Cited by
12References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 5, 2015 |
| Grant date | Jan 30, 2018 |
| Priority date | — |
| Expiry date | Mar 23, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/402
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A trolley assembly comprises a frame incorporating at least one tire encompassing a wheel bearing and a bumper comprising a first portion made of a comparably incompressible material and a second portion made of a comparably compressible material. The bumper is mounted on the frame such that the bumper moves upon impact with an object, compressing the compressible material. For example, the incompressible material may be a polyamide and the compressible material may be a neoprene extrusion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.