Method and apparatus to detect and locate damage and breaches in roof membranes
US7554345B2 · kind B2 · utility
52Cited by
6References
27Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 3, 2007 |
| Grant date | Jun 30, 2009 |
| Priority date | — |
| Expiry date | Feb 27, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04D13/006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A leak in a membrane on top of a horizontal roof deck is located by a manually operable carriage which is swept over the upper surface of the membrane on the roof deck. A measuring and switching circuit generates a voltage having a positive attached to the roof deck and a negative attached to conductive brushes on the carriage. The brushes are arranged to form an outer peripheral contact with an inner contact inside the outer contact. Thus the presence of a leak is detected by the outer set of conductive brushes at distance from the leak and by the inner conductive brush when directly over the leakage site.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.