Abstract An air-actuated speedometer for use in measuring the speed of a human body or vehicle comprising a housing having an opening for air intake and an opening for allowing air out of the housing. A plate is pivotally mounted in the housing and moves along an arc corresponding to an arcuate slot in the housing. Springs are provided for urging the plate to an initial position, the plate being initally spring held and counterbalanced to a zero speed position and movable by air passing through the housing to indicate the actual rate of speed. Frictionally engaging the housing and extending through the slot and adapted to be engaged by the slot is a device for indicating the highest speed attained during a predetermined period.
Inventors
👤 A Ruskin
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-31 14:42
CPC Classifications
G; G01; G01P; G01P5/00; G01P5/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
146 words
An air actuated speedometer comprising a housing having an air intake opening and a discharge opening, a plate pivotably mounted in said housing, an arcuate slot in said housing, said plate being visable through said slot and being movable along said slot and between said air intake opening and said discharge opening, and spring means in said housing connected to said plate urging said plate towards said inlet opening, said plate being pivotably mounted at its center of gravity, in said housing, said plate being vertically disposed and having a vertical axis, said spring means including a pair of springs extending normally to said plate and said axis, one of said springs being above said center of gravity and one of said springs being below said center of gravity, and indicia means on said housing cooperating with said plate to provide direct reading of instantaneous speed.
Claim 2
Dependent Claim
146 words
An air actuated speedometer comprising a housing having an air intake opening and a discharge opening, a plate pivotably mounted in said housing, an arcuate slot in said housing, said plate being visable through said slot and being movable along said slot and between said air intake opening and said discharge opening, and spring means in said housing connected to said plate urging said plate towards said inlet opening, said plate being pivotably mounted at its center of gravity, in said housing, said plate being vertically disposed and having a vertical axis, said spring means including a pair of springs extending normally to said plate and said axis, one of said springs being above said center of gravity and one of said springs being below said center of gravity, and indicia means on said housing cooperating with said plate to provide direct reading of instantaneous speed.
Claim 3
Dependent Claim
36 words
An air actuated speedometer according to claim 1, including means extending through said slot and engageable by said plate, said indicating means frictionally engaging said housing for registering the highest speed attained during a predetermined period.