Air spring and railcar
US9545933B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2014 |
| Grant date | Jan 17, 2017 |
| Priority date | — |
| Expiry date | Jul 31, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F13/002
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An air spring (2) includes: an upper surface plate (21); a lower surface plate (22); an elastic film (23) airtightly coupling a peripheral portion of the upper surface plate (21) and a peripheral portion of the lower surface plate (22) to each other to form an air chamber (24) inside the elastic film (23); an elastic stopper (25) connected to the lower surface plate (22); and at least one of an internal pipe (45) or internal wire (55) extending from an upper surface of the upper surface plate (21) to a side surface of the elastic stopper (25). A part of a pipe and/or wire extending between a carbody (11) and a bogie (1) of a railcar (100) is constituted by the internal pipe (45) and/or internal wire (55) of the air spring (2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.