# US 8,770,341 B2 · Compressor intake muffler and filter > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,770,341 B2 - Document ID: US8770341B2 - Status: Granted - Kind: B2 - Application number: 13/609,363 - Filed: 2012-09-11 - Published: 2013-03-14 - Granted: 2014-07-08 - Earliest claimed: 2011-09-13 - Assignees: Black & Decker Inc. - Applicants: Mark W. Wood; Stephen J. Vos; Scott D. Craig - Inventors: Mark W. Wood; Stephen J. Vos; Scott D. Craig - Web page: https://patentgrep.com/patent/US8770341B2 ## CPC - F04B 39/066: {Cooling by ventilation} - F04B 9/02: the means being mechanical - F04B 23/10: at least one pump being of the reciprocating positive-displacement type - F04B 35/04: the means being electric - F04B 35/06: Mobile combinations - F04B 39/0061: {using muffler volumes} - F04B 39/121: {Casings} - F04B 41/02: having reservoirs - F04D 19/00: Axial-flow pumps (F04D21/00 takes precedence; {pump comprising axial flow and radial flow stages F04D17/025}) - F04D 29/668: {damping or preventing mechanical vibrations} - F04B 39/0027: {Pulsation and noise damping means} - F04B 39/0033: {with encapsulations} - F04B 39/0055: {with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes} - Y10S 181/403: Refrigerator compresssor muffler - Y10T 29/49238: Repairing, converting, servicing or salvaging - Y10T 137/7039: Tank supports - F04B: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F) - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A muffler for a feed air system of a compressor assembly. The muffler can be a product of a blow molding process and used in a method of sound control for a compressor assembly. A method of controlling sound in a compressor assembly can have the step of providing a feed air and the step of providing the muffler an outlet in communication with an inlet of a pump assembly which can compress the feed air fed through the muffler and into the pump assembly. Sound control for a compressor assembly is also accomplished by adapting a feed air system to have sound control of a feed air path by dampening the sound emitted from a pump system through the feed air path. ## Claims ### Claim 1 A muffler for a feed air system of a compressor assembly, comprising: an intake muffler feed line; a muffler outlet line; a muffler chamber; wherein the intake muffler feed line is adapted to provide feed air to the muffler chamber, and wherein the muffler outlet line is adapted to provide feed air from the muffler chamber for compression by a pump assembly of a hand portable compressor assembly. ### Claim 2 (depends on 1) The muffler for a feed air system of a compressor assembly according to claim 1, wherein the muffler chamber has a volume greater than 3 in^3. ### Claim 3 (depends on 1) The muffler for a feed air system of a compressor assembly according to claim 1, wherein the muffler chamber has a volume greater than 10 in^3. ### Claim 4 (depends on 1) The muffler for a feed air system of a compressor assembly according to claim 1, wherein the muffler chamber has a volume greater than 30 in^3. ### Claim 5 (depends on 1) The muffler for a feed air system of a compressor assembly according to claim 1, wherein the muffler chamber is the product of a blow molding process. ### Claim 6 (depends on 1) The muffler for a feed air system of a compressor assembly according to claim 1, wherein the muffler chamber has a substantially curved surface area. ### Claim 7 (depends on 1) The muffler for a feed air system of a compressor assembly according to claim 1, wherein the muffler chamber has a first internal chord which is greater than 1.5 times the length of a second internal chord. ### Claim 8 (depends on 1) The muffler for a feed air system of a compressor assembly according to claim 1, wherein the muffler has an angle in the intake muffler feed line which has a value in the range of from 33 degrees to 156 degrees. ### Claim 9 (depends on 1) The muffler for a feed air system of a compressor assembly according to claim 1, wherein the muffler has an angle in the muffler outlet line which has a value in the range of from 33 degrees to 156 degrees. ### Claim 10 (depends on 1) The muffler for a feed air system of a compressor assembly according to claim 1, wherein the muffler has a muffler inlet centerline and a muffler outlet centerline which cross at an angle in a range of from 66 degrees to 156 degrees. ### Claim 11 (depends on 1) The muffler for a feed air system of a compressor assembly according to claim 1, wherein the muffler has a muffler inlet centerline and a muffler outlet centerline which are perpendicular to each other. ### Claim 12 (depends on 1) The muffler for a feed air system of a compressor assembly according to claim 1, wherein the muffler has a head feed centerline and a muffler intake centerline which are at an angle in a range of from 66 degrees to 156 degrees to each other. ### Claim 13 (depends on 1) The muffler for a feed air system of a compressor assembly according to claim 1, wherein the muffler has a head feed centerline and a muffler intake centerline which are at an angle of 146 to each other. ### Claim 14 A method of sound control for a compressor assembly, comprising the steps of: providing a feed air; providing an intake muffler having an outlet in communication with an inlet of a pump assembly adapted to compress the feed air; feeding the feed air through the muffler and into the pump assembly of a hand portable compressor assembly; and compressing the feed air at a compressor assembly sound level in a range of from 65 DBA to 75 dBA. ### Claim 15 (depends on 14) The method of sound control for a compressor assembly according to claim 14, further comprising the step of compressing the feed air at a volumetric rate in a range of from 2.4 SCFM to 3.5 SCFM. ### Claim 16 (depends on 14) The method of sound control for a compressor assembly according to claim 14, further comprising the step of compressing the feed air to a pressure in a range of from 150 to 250 psig. ### Claim 17 (depends on 14) The method of sound control for a compressor assembly according to claim 14, further comprising the step of compressing the feed air at a volumetric rate in a range of from 2.4 SCFM to 3.5 SCFM and to a pressure in a range of from 150 to 250 psig. ### Claim 18 (depends on 14) The method of sound control for a compressor assembly according to claim 14, further comprising the step of cooling the compressor assembly at a rate of from 60 BTU/min to 200 BTU/min. ### Claim 19 (depends on 14) The method of sound control for a compressor assembly according to claim 14, further comprising the step of cooling the compressor assembly using a cooling air flow rate of from 3.5 SCFM to 100 SCFM. ### Claim 20 A means for sound control of a compressor assembly comprising: Adapting a feed air system to have a means for sound control of feed air path by providing a means for dampening sound emitted form a pump system of a hand portable compressor assembly through the feed air path.