Track broom bristle
US4811447A · kind A · utility
Inventor
Key dates
| Filing date | Jul 28, 1986 |
| Grant date | Mar 14, 1989 |
| Priority date | — |
| Expiry date | Jul 28, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA46D1/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A sweeper bristle element especially adapted for the use in a broom machine for a railway road bed or track. The sweeper bristle elements of the broom machine have a solid rubber core and layers of rubber coated fabric encircling the solid rubber core. The fabric in the rubber coated layers provide sufficient strength to resist breakage during cleaning and also provides sufficient flexibility to improve the wear of the bristle elements. The fabric is spiral wound with a thin layer of nylon material and thence cured to form an integral and compact bristle element. The nylon material is then unwrapped and the bristle element is cut into a plurality of small length bristle elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.