Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1450023A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MSA Safety Inc
Original Assignee
Mine Safety Appliances Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mine Safety Appliances CofiledCriticalMine Safety Appliances Co
Priority to GB1450023ApriorityCriticalpatent/GB215599A/en
Publication of GB215599ApublicationCriticalpatent/GB215599A/en
A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
A62B7/00—Respiratory apparatus
A62B7/10—Respiratory apparatus with filter elements
Landscapes
Health & Medical Sciences
(AREA)
Pulmonology
(AREA)
General Health & Medical Sciences
(AREA)
Business, Economics & Management
(AREA)
Emergency Management
(AREA)
Respiratory Apparatuses And Protective Means
(AREA)
Abstract
215,599. Shields, T., (Mine Safety Appliances Co.). June 1, 1923. Air-meters.-In order to measure the amount of air consumed by the user of a respiratory appliance, the air drawn in at the inlet 50 acts on propeller vanes 52 to rotate a spindle 51, the rotation of the spindle actuating an indicator 53 through a suitable arrangement of reducing gears.
GB1450023A1923-06-011923-06-01Improvements in respiratory apparatus
ExpiredGB215599A
(en)