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US007131560B2 (12) United States Patent (10) Patent No.: US 7,131,560 B2 Hammond (45) Date of Patent: Nov. 7, 2006 (54) PORTABLE BEER KEG TAP AND 3,141,690 A * 7/1964 Greenfield ............... 403,3744 DISPENSER 3,933,282 A * 1/1976 Stevens, Jr. .............. 222/400.7 4,940,212 A 7/1990 Burton ...................... 261 (64.1 (76) Inventor: Jerry Graham Hammond, 3426 5,529,220 A * 6/1996 Credle et al. ............... 222/175 Carriage House, Richmond, TX (US) 5,730,323 A * 3/1998 Osborne ........... ... 222/55 77469 6,237,809 B1* 5/2001 Kawai et al. ................. 222,95 2003/0024952 A1 2/2003 Mackenzie et al. ......... 222,399 *) Notice: Subject to anyy disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 154 days. * cited by examiner (21) Appl. No.: 10/891.951 (22) Filed: Jul. 15, 2004 Primary Examiner Joseph A. Kaufman (74) Attorney, Agent, or Firm—Arthur M. Dula (65) Prior Publication Data US 2006/0011664 A1 Jan. 19, 2006 (57) ABSTRACT (51) Int. Cl. 52 is a (2006.01) 222/399; 222/400.7 A lightweight beer dispensing system comprising a small (52) irr or. s carbon dioxide pressure bottle attached directly to an adjust (58) Field of Classification Search ................ 222/399, able pressure regulator that can be set to avoid excess 222/400.7,400.8 foaming is attached directly to a keg tap having a delivery See application file for complete search history. faucet. The invention taps a full size beer keg and uses CO (56) References Cited to keep the beer fresh thus avoiding the problem of intro ducing oxygen into the beer keg. U.S. PATENT DOCUMENTS 3,129,730 A * 4, 1964 Simon ........................ 141,286 3 Claims, 2 Drawing Sheets w - S s g 1-1 to s D3 - re ofa to 1 - yd is 1e-1- - N THREADED ONAOFF NEEDE WAVE ALUMNUM ALOY THREADED CHECK CO2 CYL INDER WAVE WANPPLE (8OO P. S. ) RUBBER THOMAS 3 WINGEO EVER - BEER AP U.S. Patent Nov. 7, 2006 Sheet 1 of 2 US 7,131,560 B2 BEERTAP W?NGEDLEVER NEEDLEVALVE THREADEDON/OFF RUBBERTHOMAS VALVEW/N}PPLE THREADEDCHECK CO2CYLINDER ALUMINUMALLOY |2,3, (800P.S.|.) Figure U.S. Patent Nov. 7, 2006 Sheet 2 of 2 US 7,131,560 B2 US 7,131,560 B2 1. 2 PORTABLE BEER KEG TAP AND dozens of beer keg taps and draft beer dispensers. This DISPENSER equipment is completely unsuitable for use at picnics, par ties or for the large and growing number of drinkers who FIELD wish to keep a keg of beer at home in their refrigerator So they can have draft beer at home on demand. The present invention relates generally to an apparatus Picnic pumps such as the one taught by U.S. Pat. No. used to tap beer kegs and dispense beer. More specifically 4,711,377, issued to Brown on Dec. 8, 1987 use a hand the present invention relates to a lightweight portable beer operated air pump. Such pumps are common and exist in keg tap and beer dispenser operated by CO gas from a hundreds of variations. These pumps are Small and light compressed gas cylinder. 10 weight, but they pressurize the beer keg with air, which makes them unsuitable for use with a home keg because BACKGROUND OF THE INVENTION contact with the oxygen in air quickly ruins the beer. U.S. Pat. No. 5,785,211 teaches a portable electrically We can trace the beginning of beer drinking far back powered keg-tapping device for use with regular beer kegs. beyond the dawn of recorded time. Most likely, a crude form 15 The electrical compressor is a good replacement for a hand of beer was discovered by accident when someone mixed pump, but it does not solve the problem of introducing air barley with water and then let it sit long enough for stray into a keg that must be stored and used over a period of time. yeast cells to settle, triggering fermentation. The Babylo An advantageous beer pumping system would combine nians, Assyrians, Egyptians, Hebrews, Africans, Chinese, the beer preservation and adjustable pressurization available Incas, Teutons, Saxons and various wandering tribes all with commercial type systems with the low profile and discovered beer by various independent means. The dispens portability of a picnic pump system. Portable beer dispens ing system used by these early brewers were amphora, mugs ing systems, such as the one taught by U.S. Pat. No. and the early equivalent of Straws, which were used to sip 5,199,609, issued to Ash on Apr. 6, 1993, teach the use of a the liquid beer while avoiding the brewer’s residue. CO bottle packaged in a backpack and connected by pres From the middle ages, when the use of hops made beer 25 sure tubes to a container of beer. This type of dispenser, and clear, until the 1890s, beer was stored in and dispensed from there are many examples in the prior art, is useful for wooden barrels through simple valves and delivered to the dispensing beer at sporting events, but uses a special Small drinker mug or glass by gravity flow. From the 1950s to the beer tank and thus cannot be of any use to home beer keg present most draft beer has been shipped in and dispensed OWS. from kegs that are cylindrical, made of stainless steel or 30 Another portable beer dispensing system, U.S. Pat. No. aluminum and contain an extractor tube. 2,571,433, issued to Fine et al. on Oct. 16, 1951, teaches the To dispense the beer from the keg a pressurizing gas, air use of a small pressurized cylinder and a regulator perma or CO, is forced into the keg through a beer keg tap. The nently attached to a specialized beer container. However, the liquid beer is forced out through the extractor tube, flexible specialized beer container is not commercially available. hoses and a delivery faucet. Air is very undesirable as a 35 Furthermore the pressurization system is permanently pressurizing gas because the oxygen in air makes beer attached to the non commercially available specialized beer quickly go stale or sour. Air can be used when the entire keg container. Additionally, the presence of a cover over the is to be drunk quickly. Air cannot be used as a pressurizing pressurization system does not facilitate precision pressure gas if the keg must be stored and the beer consumed over a adjustments for individual types of beer or specific keg period of time. 40 temperatures to prevent unwanted foaming. A more useful There are two general types of beer dispensing systems device will combine all the advantages of a commercial beer taught by the prior art. One is a commercial system that uses pumping system, such as CO pressurization to maintain heavy pressure bottles of compressed carbon dioxide gas beer freshness and easy adjustability of the CO pressure to operating through regulators and pressure lines to pressurize prevent foaming, with the low profile and portability of a one or more kegs. The other is a consumer system usually 45 picnic pump system. Interestingly, no devices that incorpo used at a party or picnic that uses an air pump, which may rate all the advantages of a commercial beer pumping be a hand powered or electrically operated compressor, to system with the low profile and portability of a picnic beer pressurize the keg. This is therefore commonly known as a pumping system currently exist. picnic pump system. This combination would allow for a simple home draft Advantages of the commercial beer dispensing systems 50 beer system by placing a small, easily adjustable CO include the use of CO dispensing systems that prevent air pressurized beer pump on any commercially available beer from coming in contact with the keg beer and thus allowing keg. The keg with the beer pump could then be placed in any the keg beer to stay fresh for a longer period of time than conventional refrigerator for to keep the beer at a constant when air is used as a pressurizing gas. Another advantage of drinkable temperature. Currently, home kegs may be kept in a commercial beer dispensing system is the ability to control 55 refrigerated one keg Systems, such as the Beer Baron R sold the pressure of the gas Supplied to the keg through the use by Ajex USA, Inc. of Commerce City, Colo., but such of adjustable regulators and pressure gauges. This feature is “home' draft beer systems are huge, weigh several hundred a marked advantage over a picnic pump system as it allows pounds and are very expensive. the pressure to be finely tuned to the individual type of beer U.S. Pat. No. 4,180,189, issued to Zurit et al. Dec. 25, or the specific temperature of the keg to prevent excessive 60 1979 teaches the use of a standard keg tap using a conven foaming of the dispensed beer as is often encountered in the tional bayonet type of connection to attach the tap to the keg. picnic pump systems. In addition U.S. Pat. No. 4,180,189 also teaches the use of Examples of commercial beer dispensing systems may be a pressure inlet to pressurize the beer keg in combination found in most bars and restaurants. This equipment is with a Thomas valve designed to prevent back pressure or cumbersome and industrial. Their rat’s nest of tubing is a 65 beer from flowing out of the pressure inlet into the pressure common feature behind bars.