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  CompressorUSPTO Application #: 20080085196Title: Compressor Abstract: In the case of a compressed air compressor, intake openings located in the cylinder covers are connected to intake pipes made from elastomeric material, the length of which pipes amounts to a multiple of the clear cross-section. The intake pipes have a semicircular pipe portion at the cylinder end and a straight free pipe portion, which extends over the outer surface of the associated cylinder at a slight distance therefrom. (end of abstract) Agent: Factor & Lake, Ltd - Chicago, IL, US Inventor: Alfred DEUBLER USPTO Applicaton #: 20080085196 - Class: 417312000 (USPTO) Related Patent Categories: Pumps, With Muffler Acting On Pump Fluid The Patent Description & Claims data below is from USPTO Patent Application 20080085196. Brief Patent Description - Full Patent Description - Patent Application Claims
[0001] The invention relates to a compressor according to the precharacterising clause of claim 1. [0002] Such a compressor is disclosed in EP 0 335 362 B1. It is distinguished by compact dimensions together with good delivery characteristics and quiet running. [0003] For many applications it would be desirable for such a compressor to create even less noise while running. [0004] To achieve this object the present invention proposes a compressor with the features stated in claim 1. [0005] In the case of the compressor according to the invention, the intake openings of the various cylinders are each provided with an intake pipe, the length of which is long compared with the clear cross-section of the intake pipe. In this way, the intake noise is considerably reduced. [0006] Surprisingly, the volumetric flow rate (the delivery capacity) is additionally increased by approx. 5%. The reduction in overall noise level achieved by the intake pipe amounts at average audio frequencies of from approx. 100 Hz to 2 kHz to approx. 3 to 9 dB(A). [0007] Advantageous further developments of the invention are indicated in the dependent claims. [0008] Claim 2 states preferred ratios between the length of the intake pipes and the clear internal diameter thereof. [0009] The further development of the invention according to claim 3 is advantageous with regard to simple attachment of the intake pipes to the cylinders. [0010] Claim 4 provides a simple detachable connection between intake pipes and cylinders. [0011] In the case of the compressor according to claim 5, the intake filters may also contribute to sound absorption. [0012] A compressor as indicated in claim 6 has particularly favourable flow conditions at the ends of the intake pipes, which likewise has a favourable effect on noise development. [0013] Claim 7 states particularly well-proven curvature conditions for the end of the intake channel provided in the intake pipes. [0014] The further development of the invention according to claim 8 is also advantageous with regard to favourable flow conditions at the inlet of the intake pipes. [0015] The diameters of the intake channel, as stated in claim 9, have proven particularly advantageous for compressors of moderate delivery capacity (40 to 250 l/min), as are often used in dental practices. [0016] The further development of the invention according to claim 10 makes it possible to position a longer major part of the intake pipe at a point at which free space is still available within the clear contour in the case of the compressor considered in each case. [0017] In the case of a compressor according to claim 11, the longer straight pipe portion may extend parallel to an outer surface of the cylinders, if the cylinder-side end of the intake pipe is connected to an air intake opening, which, as is often conventional, is provided in the cover of the cylinder. [0018] The further development of the invention according to claim 12 is advantageous with regard to good sound absorption in the case of intake pipe dimensions which enlarge the clear contour of the compressor only slightly. [0019] The further development of the invention according to claim 13 is advantageous with respect on the one hand to achieving maximum sound absorption and on the other hand also to ensuring unthrottled access by the air to the inlet of the intake pipes. [0020] The further development of the invention according to claims 14 and 15 is advantageous with regard to further improvement of sound absorption. [0021] The further development of the invention according to claim 16 is advantageous with regard to further improved sound absorption. [0022] A compressor according to claim 17 is of particularly compact construction. Furthermore, the intake areas of both cylinder units are spatially separated. [0023] In the case of a compressor according to claim 18, relatively cool air flows into the inlet ends of the intake pipes, which contributes to better cylinder filling. [0024] The invention is explained in greater detail below by means of exemplary embodiments with reference to drawings, in which: Continue reading... Full patent description for Compressor Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Compressor patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Compressor or other areas of interest. ### Previous Patent Application: Oil balance system and method for compressors connected in series Next Patent Application: Magnetostriction air pump Industry Class: Pumps ### FreshPatents.com Support Thank you for viewing the Compressor patent info. IP-related news and info Results in 0.10283 seconds Other interesting Feshpatents.com categories: Tyco , Unilever , Warner-lambert , 3m |
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