Foreign object insertion detector device
US6420693B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 7, 1999 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | Sep 7, 2019 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/55
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In the foreign object insertion detector device, the light (infrared rays) is transmitted into the internal space 13 of a tube body 11 implanted into a weather strip 9 and formed of elastic material and, if there occurs the insertion of a foreign object, then the foreign object produces a pressing force and applies the pressing force to the tube body 11 to thereby deform the tube body 11. If the tube body 11 is deformed in this manner, then the quantity of the light transmitted through the internal space 13 is caused to decrease. By judging whether a decrease in the quantity of the light transmitted through the internal space 13 is present or absent, the insertion of the foreign object can be detected. In order to able to detect the pressing force given from obliquely downward directions C and D by the foreign object with high sensitivity, in the obliquely downward car exterior side or obliquely downward car exterior side of the tube body 11 in the weather strip 9, as pressing means 12, there are formed cavity portions 31, 33 as well as projecting portions 37, 39. Thanks to this structure, the pressing force from the foreign object can be applied through the projecting portions 37 …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.