Variable volume air pump

Details Variable volume air pump Variable volume air pump

1995-06-13

1998-11-17

Thorpe, Timothy

Pumps

With signal, indicator, or inspection means

417470, F04B 1900

Patent

active

058367470

ABSTRACT:
A constant-speed, variable-volume, piston-type air pump. The piston head always is closely adjacent to the cylinder head at the completion of the compression stroke. The length or extent of the piston down-stroke or intake stroke is selectively adjustable between a maximum and a minimum position to thus vary the volume of air pumped.

REFERENCES:
patent: 2029941 (1936-02-01), Pokorney
patent: 2564173 (1951-08-01), Rappl et al.
patent: 3163355 (1964-12-01), Korte
patent: 3186349 (1965-06-01), Compton et al.
Stoelting model 219 Mix Pump Owner's Manual No. 1134067. Revised Jun., 1985 (31 pages).
Hajec handwritten memorandum dated Aug. 2, 1993.
Stoelting P.O. 16069-00 dated Aug. 4, 1993 to Vikeland ordering 10 ice cream mix and air pump per Jul. 8, 1996 B. GOCH requirement memo with .100" wall.
Falcon Electric Corp. Aug. 10, 1993 letter.
Falcon Electric Corp. Aug. 12, 1993 letter.
Vikeland (Kletch) Sep. 2, 1993 memorandum to Hajec (2 pages).
Stoelting Dec. 22, 1993 trip report (7pages).
Stoelting PO81180-00 dated Mar. 7, 1994 for 50 U3 Ultima Pumps.
Stoelting May 5, 1994 letter to Chet Hajec (Vikeland).
Hajec May 16, 1994 letter to Stoelting.
Stoelting May 23, 1994 letter to Chet Hajec (Vikeland).
Stoelting Oct. 4, 1994 letter to Chet Hajec (2pages).
Stoelting Oct. 14, 1994 memorandum (4 pages).
Stoelting Nov. 30, 1994 letter to Chet Hajec.
Stoelting Jan. 5, 1995 memorandum (3 pages).
Stoelting PO 88009-00 dated Jan. 26, 1995.
Stoelting PO 88011-00 dated Jan. 26, 1995.
Stoelting Feb. 27, 1995 memorandum (2 pages).
Stoelting Mar. 16, 1995 memorandum (3 pages).
Stoelting Mar. 29, 1995 letter to Chet Hajec (2 pages).
Stoelting Apr. 4, 1995 letter to Falcon Electric.
Stoelting Apr. 17, 1995 letter to Falcon Electric.
Stoelting May 9, 1995 letter to Falcon Electric (5 pages).
Stoeling May 17, 1995 letter to Falcon Electric (2 pages).
Stoelting May 18, 1995 letter to B. Linnerooth (Falcon Electric) (3 pages).
Chester S. Hajec Declaration.

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