Portable, refrigerant recovery unit
United States Patent D549744

Sundheim, Gregory S. (5170 Juniper St., Bowmar, CO, US)
Morris, Robert M. (Lakewood, CO, US)
Application Number:
Publication Date:
Filing Date:
Sundheim, Gregory S. (Bowmar, CO, US)
Primary Class:
International Classes:
(IPC1-7): 1507
Field of Search:
312/405, 312/138.1, 312/116, 62/125, 312/236, D15/81, D9/527, D15/79, 312/406, 440/88R, 312/3.6, 62/126
View Patent Images:
US Patent References:
D481741Mini size solid state refrigeratorNovember, 2003YuenD15/81
D482373Housing for refrigerant recovery systemNovember, 2003Seymour et al.
D474209Housing for refrigerant recovery systemMay, 2003Seymour et al.
6126410Head cover assembly for reciprocating compressorOctober, 2000Kung et al.
6099259Variable capacity compressorAugust, 2000Monk et al.
5846059Scotch yoke mechanism for multistage compressor having a spring-biased liner plateDecember, 1998Mizuno et al.
D377179Refrigerant recovery machineJanuary, 1997Sundheim et al.D15/79
5423702Fuel tank sump assembly for fuel injection enginesJune, 1995Butler440/88R
D358548Plastic container for liquidsMay, 1995PlatteD9/527
5310326Rotary compressor with improved bore configuration and lubrication systemMay, 1994Gui et al.
5127239Refrigerant handling system with facility for clearing system components of refrigerantJuly, 1992Manz et al.
5092185Scotch yoke mechanism and power transfer systemMarch, 1992Zornes et al.
5078017Motion translation device of scotch yoke typeJanuary, 1992Zornes
5017108Scroll compressor with first and second oil pumps in seriesMay, 1991Murayama et al.
4631006Compact vacuum pumpDecember, 1986Murray
4608002Rotary vane compressor with hook-like suction passageAugust, 1986Hayase et al.
4559838Scotch yoke piston and crankshaft connection with floating crank pinDecember, 1985Neuenschwander
4523897Two stage vacuum pumpJune, 1985Lower et al.
4408968Rotary compressorOctober, 1983Inagaki et al.
4299097Vane type compressor employing elliptical-circular profileNovember, 1981Shank et al.
4032270Rotary vane compressor with improved vane extension meansJune, 1977Sheth et al.
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3952709Orbital vane rotary machineApril, 1976Riddel
3820924N/AJune, 1974Cassidy
3451276ACTUATOR MECHANISMSJune, 1969Wadlow et al.
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0235905N/ADecember, 1880Schultz

Other References:
Stinger 2000—Universal Refrigerant Recovery System, pp. 4-5 and 16, 2000, United Kingdom.
OZ Refrigerant Recovery System—Powermax, ThermaFlo, Springfield, MA, 2003.
Welch Direct Drive Vacuum Pumps, 2003, Labconco Corporation, Kansas City, MO.
CPS 2003—Professional Air Conditioning & Refrigeration Products, 2003, p. 14, CPS Products, Inc., Hialeah, FL.
Promax Robinair, ATP 2004 HVAC/R Catalog, pp. 22-23, Advanced Test Products, Miramar, FL.
Greg Sundheim, Helpful Hints for Refrigerant Recovery, Contracting Business, Feb. 1997, Penton Publishing Inc., Cleveland, OH.
Refrigerant Recovery, 1998, Promax/Amprobe, Englewood, CO.
Primary Examiner:
Reid, Stella
Assistant Examiner:
Hill, Shanda C.
Attorney, Agent or Firm:
Carson, Scott W.

1. The ornamental design for a portable, refrigerant recovery unit, as shown and described.


FIG. 1 is a perspective view of a portable, refrigerant recovery unit showing our new design.

FIG. 2 is a right side thereof, the left side view being a mirror image thereof.

FIG. 3 is a front view thereof.

FIG. 4 is a top plan view thereof.

FIG. 5 is a bottom plan view; and,

FIG. 6 is a rear view thereof.

The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design.