Patent
Pressure indicating and limiting instrument
TLDR
In this paper, a pressure gauge utilizes a Bourdon tube and associated mechanical linkage to indicate pressure on a calibrated dial between predetermined limits, and fixed high pressure and low pressure limit switches are fixedly secured to a carrier having lost motion connections with the Bourdon tubes and said linkage.Abstract:
A pressure gauge utilizes a Bourdon tube and associated mechanical linkage to indicate pressure on a calibrated dial between predetermined limits. High pressure and low pressure limit switches are fixedly secured to a carrier having lost motion connections with the Bourdon tube and said linkage. Adjustable high pressure and low pressure stops on the face of the instrument positively interrupt the movement of the instrument pointer and thereby lock said linkage. Continued expansion or contraction of the Bourdon tube utilizes said lost motion connections with said switch carrier to operate the high pressure and low pressure limit switches in proper sequence. The principle of operation is also adaptable to Bourdon tube temperature gauges.read more
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Patent
Pressure sensing means and method for making a pressurized container means and system utilizing the same
TL;DR: In this paper, a container having a pressurized fluid therein and a pressure sensing fluid operated device carried by the container for sensing pressure changes within the container was used as the fluid pressure supply means for a vehicular air bag safety device.
Patent
Pressure gauge with needle actuated alarm
TL;DR: A pressure gauge has a turning button, a turning disc and a sliding block disposed thereon that, through a protruding wheel fixed on the needle shaft, moves the sliding block to force a contact point of a conducting metal piece to contact with a contacting point of the turning disc.
Patent
Signal generating pressure gauge
TL;DR: In this article, an adjustable pressure-setting mechanism includes a rotary plate rotatably mounted in the housing and rotatable relative to the indicating panel, and electrically conductive low-pressure and high-pressure stop units which extend into a setting hole unit in the rotary plates.
Patent
Pressure gage and venting means for use with machinery
TL;DR: A Bourdon tube pressure gage is employed to monitor operating pressures of machines, such as engines or compressors as mentioned in this paper, which has a manually adjustable high pressure limit stop which arrests movement of the gage pressure indicating pointer.
Patent
Microswitch device actuatable at two preset values of a measurable variable
TL;DR: In this paper, a microswitch has an operating lever extending between two manually movable pointers and defining the maximum and minimum values for a variable, such as a pressure or a temperature.
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