Title: Pneumatic pressure transmitter responsive to temperature and humidity

Abstract: A force-balance transmitter for producing a pressure signal proportional to the enthalpy of air has a flapper associated with a nozzle and employs a control force acting on the flapper in opposition to a feedback force applied to the flapper by the controlled fluid pressure acting over the area of the nozzle, the control force being produced by the combination of forces exerted on the flapper by two resilient beams subjected to individual bending moments responsive to sensed temperature and sensed humidity respectively.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Stark, Ernest H. (Rockford, IL, US)

Application Number: 790372
Filing Date: 1977-04-25
Publication_date: 1978-05-30
Assignee: Barber-Colman Company (Rockford, IL)
Primary Class(es): 236/44C 73/335.02, 200/61.06, 236/87
Other Classes:
US Patent Ref:

3970246	Jul, 1976	Attridg, Jr. et al.	200/61.
3999706	Dec, 1976	Lewis	236/44.

Other Refs:
Primary Examiner: Wayner, William E.
Assistant Examiner:
Attorney: Hammes, Jr.; Robert M.