ROBERT ROLAND REDNER
Pilots at Linwood St, West Bloomfield, MI
License number
Michigan A2411187
Issued Date
Jan 2016
Expiration Date
Jan 2018
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
4761 Linwood St, West Bloomfield, MI 48324
Professional information
Air Filter Gauge
US Patent:
6190442, Feb 20, 2001
Filed:
Aug 31, 1999
Appl. No.:
9/387302
Inventors:
Robert P. Redner - Orchard Lake MI
Assignee:
Tishken Products Co. - Detroit MI
International Classification:
B01D 4642
US Classification:
96421
Abstract:
An air filter cleanness gauge is provided. The gauge in a preferred embodiment includes a transparent cover. The housing has a first opening for fluid communication with the atmosphere and a second opening having fluid communication with a fluid source exposed to a filter. A vane is pivotally connected within the housing and provides a pressure boundary between the first and second openings. Movement of the vane indicates a change in pressure differential between the atmosphere and the fluid source, thereby indicating a need to change the air filter.