Smart smoke unit
US7297045B2 · kind B2 · utility
79Cited by
15References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 5, 2002 |
| Grant date | Nov 20, 2007 |
| Priority date | — |
| Expiry date | Oct 12, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63H19/14
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A smoke generating device for a model train that includes a smoke generating element supported by a support member. The smoke generating element can be wound around the support member is a generally helical pattern. The number of turns and the distance between turns can be varied to enhance the smoke generating properties of the device. The support member can be braided fiberglass. A length and cross-section of the support member can be varied to support smoke generating elements of different lengths. The length of the smoke generating element can be varied to produce smoke generating devices having different resistive values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.