Title: Angularly related dual stethoscope head

Abstract: A stethoscope head having a bell and a diaphragm. The bell is offset from the diaphragm axis. The bell axis intersects the diaphragm axis at an acute angle of not less than twenty degrees or more than seventy degrees, and preferably at thirty degrees. A selectively movable valve is provided to connect the bell and the diaphragm, individually, to an airway which may be connected to a sound tube leading to binaurals. The valve comprises a cylindrical spool seated and totally supported within a cylindrical bore in the head body.

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Inventors: Allen, Derek R. (Corona del Mar, CA, US)

Application Number: 885883
Filing Date: 1978-03-13
Publication_date: 1980-07-15
Assignee:
Primary Class(es): 181/131 181/137
Other Classes:
US Patent Ref:

3124211	Mar, 1964	Cefaly	181/131.
3630308	Dec, 1971	Ravin	181/131.
3767003	Oct, 1973	Shacklock	181/137.

Other Refs:
Primary Examiner: Gonzales, John
Assistant Examiner: Fuller, Benjamin R.
Attorney: Bethel; George F., Bethel; Patience K.