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AssigneeWelch Allyn, Inc.
InventorsRaymond A. Lia, Robert Vivenzio, Scott S. Stearns, Dominic Danna, Timothy J. Smith, Allan I. Krauter, Edward W. Wright, Edward A. Johnson
Estimating the term…
A gage mechanism for a blood pressure measuring device or other similar apparatus includes a supported shaft member having one end in contact with an inflatable bellows. A pointer is attached at an opposite end of the shaft and a helically wound spring is attached to the shaft and a supporting structure. As the bellows inflates, the shaft is axially displaced and causes rotation due to the constraint of the helical ribbon spring, causing a corresponding angular deflection of the attached pointer relative to an indicating scale. The mechanism includes a first adjustment member for allowing the pointer to be preset to a zero or calibrated position, and a second adjustment mechanism that controls the amount of angular rotation of the shaft and pointer for a displacement of the bellows.
A method for calibrating a measuring device, said measuring device including displacement means disposed on one side of a housing interior, a dial indicator face disposed on an opposite side of said housing interior, and a movement mechanism disposed therebetween, said movement mechanism comprising an axially movable shaft member supported in said housing interior, said shaft member having a first end disposed adjacent said displacement means and a second end including a pointer adjacent said dial indicating face, a spring member attached at one end to said shaft member and at an opposite end to a support, said method including the steps of:
Dependencies are inferred from the claim text.