US3190183A - Air tool improvement - Google Patents
Air tool improvement Download PDFInfo
- Publication number
- US3190183A US3190183A US193780A US19378062A US3190183A US 3190183 A US3190183 A US 3190183A US 193780 A US193780 A US 193780A US 19378062 A US19378062 A US 19378062A US 3190183 A US3190183 A US 3190183A
- Authority
- US
- United States
- Prior art keywords
- housing
- pressure fluid
- rotor
- sleeve insert
- sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C13/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01C13/02—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby for driving hand-held tools or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/04—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor driven by fluid-pressure or pneumatic power
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
- F05C2225/04—PTFE [PolyTetraFluorEthylene]
Definitions
- Our present invention relates in general to tools of the type employing as the motor elements thereof a unit characterized by the use of pressure fluid operating against a vaned rotor, which devices shall be identified hereinafter as air tools.
- a conventional vane type air motor has an accentrically mounted rotor carried within a housing. Air circulated through the housing between properly situated inlet and exhaust ports operates against radially extensible vanes mounted on the rotor to produce energy which may be applied by a work performing element connected thereto. However, the vanes wear against the internal surface of the housing, and both the vanes and the rotor may wear against the surfaces which define the ends of the air circulation chamber. Thus, over an ordinary service life, the tool steadily decreases in efliciency as more air escapes by the worn surfaces instead of operating with full etfect against the exposed surfaces of the vanes.
- the surfaces defining the air circulation chamber within a conventional air motor are integral with the housing and other expensive machined elements such as hearing housings.
- tool repairs are quite costly and time consuming. Consequently, one who employs a large number of air tools of various types is required to maintain a complete stock of all component parts of the tools within his inventory, provide skilled workmen to perform repairs, provide spare tools in order to replace out-of-service tools while they undergo repair, provide test equipment to insure that repairs have'been properly performed and the tools properly reassembled and adjusted, all in addition to bearing the substantial cost of replacing major machined parts order to rea turn worn tools tofull efiiciency.
- the advantages of the procedure which will result from tools embodying our invention can be summarized in the following terms.
- the user is relieved of the expense and responsibility of maintaining a large spare parts inventory and skilled repair personnel, as well as the need for spare tools and elaborate test equipment.
- His spare parts inventory need comprise but a group of self-housed motor units adequate in size and number to meet only the immediate requirements of the tools in use in his operation.
- a relatively inexperienced or unskilled workman can quickly effect a motor change, and as the replacement unit will already be fully assembled and tested, it can be relied upon to immediately return the tool to full efficiency.
- the worn unit then can be returned to the manufacturer or to a major repair point where it can be quickly and easily rebuilt by changing the bearings, rotor vanes,.and replaceable inserts, all of which may be considered expendable parts.
- the primary object of our invention is to provide a cartridge type or self-housed air motor unit which may be readily replaced within any air tool of proper standardized design to accommodate such a motor.
- Another major object of, our invention is to provide a self-housed motor constructed so that the wearing surfaces thereof can be readily and economically removed and replaced with inexpensive inserts.
- An additional object of our invention is to provide a tool which lends itself to quick replacement of worn subassemblies by relatively unskilled or inexperienced personnel.
- Yet another object of our invention is to provide an air motor unit which upon return to the manufacturer or other suitable major repair point can be quickly and economically returned to maximum efliciency through the replacement of wear surfaces with inexpensive inserts, thereby avoiding the necessity'for scrapping expensive machined parts.
- a further object of our invention is to provide a replaceable' sleeve for ready insertion and removal from an air motor, such sleeve having a wearing surface therewithin of a synthetic material characterized by a relatively smooth surface and good wearing qualities.
- FIG; 1 is a cross section of a tool embodying our invention taken along lines 11 of FIG. 2;
- FIG. 2 is a cross section along line 2-2 of FIG. 1;
- FIG. 3 is a developed view of the tool of FIG. 1, show-.
- the motor unit Carried within the main body 11 of the air tool is the motor unit which is identified generally byreference nu-' meral 22and 'is best shown in FIGS. 1 and '4.
- The" unit is housed by a housing 23 and co nduit means 24 formed therewithin is partially definedby a replaceable cylindrical sleeve insert 25.
- 'A series of air inlet ports 26 through the sleeve 25 admits pressure fluid from the con duit 24 to an air circulationchamber 27 defined-by the sleeve 25 (seeFIG. 2').
- Theipassage 24 always will be in communication with the annular space .21, and. pressure fluid willbe directed to the circulation chamber 27 by one end by bearing means 29, and 'at the other end by.
- a pressure fluid circulation chamber 27 is subdivided into sectorsby the-vanes, and the pres .sure fluid entering through theinlet ports 26 acts against the vanes exposed theretoto drive the rotor about its own axis.
- exhausted air moves into the annulus 34 between the'main body 11 and the'housing 23, and thence through passages 35, annulus 36, and. passage 37', from which point it escapes to the atrnosphere through the end of the tool for lateral ports which may be provided for, such purpose;
- the motor unit just described rotates at a high rate of 'speed, up to 30,000 revolutions 'per minute, and'the vanes are in sliding contact with the internal surface of the sleeve 25. It is the Wear between such elements :Which ultimately impairs the efliciency of operation ofthe motor to such a point that repair is'required. Further, theends of the vanes and a portion of the rotor. arein contact with the members which defineithe'ends of the fluid circulation chamber, andaccor'ding to our invention, these take" the form of substantially'flat disc-like wear plates38 and 39..
- spindle is intended .to includeany type 'of,.transm'ission element adapted to apply the output of the motor to a work
- the end of thespindle 40 which is 28 may be splined as at 43 or joined in any convenient separable.
- H Asc'rew 48 and spacer means in the form of washer 49 are received within the end of rotor 28 and secure the 1 bearing means 29 in proper position prior to assembly.
- FIGIS shows an optional feature of our invention which may be incorporated into the sleeve 25.
- the sleeve be-formed of a suitable metal or alloy to provide good wear qualities, but recent develop, 'ments inthe field of synthetics, indicate the feasibility. of. 'bondingffa relatively thin. layer: ofs'uch material to. the. internalsurface of the sleeve.
- a material such as Teflon will provide a hard smooth surface oiferingrclatively little. f frictional. resistancelto sliding contact with the vanes 31, and insure a satisfactory service life;
- the liner151 within-sleeve 25 is of a'synthetic rubber or resinous mar 'terial which lends itself to the demands 'of our unit.
- a self-housed motor unit carried within the confines of 'the body and operatively connected'to the spindle, said motor unit comprising a housing, a r
- saidsleeve insert having a plurality of spaced apart presi sure fluid inlet ports in communication wit-hthe con:
- duit -means,- i j V saidhousing and said slee've insert being provided with a rotor eccentrically mountedwithin the sleeve insert for rotation relative'thereto,
- said rotor having a plurality of vane members carried thereby for generally radially extensible movement relative thereto with the vane members ngaging the sleeve insert to impinge circulating pressure fluid against the vane members and impart rotation to the rotor, substantially flat disc-like wear plates removably disposed within the confines of the housing in engagement with the cylindrical sleeve insert and the vane members of the rotor, and spacer means for preventing the wear plates from having any engagement with the bearing means.
- said pressure fluid circulation means comprises an annular space within said tool body, and said conduit means is in communication therewithpwithout regard to radial alignment therebetween.
- said motor unit comprising a housing
- conduit means disposed in th housing in communication with pressure fluid circulation means to admit pressure fluid into the housing, a t
- said sleeve insert having a plurality of spaced apart pressure fluid inlet ports in communication with the conduit means, 7
- said housing and said sleeve insert being provided with exhaust ports for exhausting pressure fluid therefrom,
- said rotor having a plurality of vane members carried 0 spacer means for preventing the Wear plates from having any engagement with the bearing means.
- a pressure fluid actuated motor comprising a housing adapted for accommodation within the body of an air tool, said housing being substantially closed at one end and open at the other end, conduit means within said housing to admit and exhaust pressure fluid therefrom, a replaceablefcylindrical sleeve insertable from said open end and carried within said housing, pressure fluid inlet and exhaust ports through said sleeve in communication with said conduit means, a rotor eccentrically mounted within said sleeve for rotation relative thereto, a plurality of vane members carried by said rotor and radially extensible relative thereto as permitted by said sleeve Whereby circulating-pressure fluid imparts said rotation to said rotor, replaceable Wear plates positioned within said hous ing adjacent the ends of said sleeve, a longitudinally projecting lug on the end of said slee
Description
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US193780A US3190183A (en) | 1962-05-10 | 1962-05-10 | Air tool improvement |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US193780A US3190183A (en) | 1962-05-10 | 1962-05-10 | Air tool improvement |
Publications (1)
Publication Number | Publication Date |
---|---|
US3190183A true US3190183A (en) | 1965-06-22 |
Family
ID=22714972
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US193780A Expired - Lifetime US3190183A (en) | 1962-05-10 | 1962-05-10 | Air tool improvement |
Country Status (1)
Country | Link |
---|---|
US (1) | US3190183A (en) |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3307454A (en) * | 1964-06-19 | 1967-03-07 | Atlas Copco Ab | Rotary piston machines and cylinder housings |
US3429230A (en) * | 1966-11-28 | 1969-02-25 | Robert C Quackenbush | Fluid driven motor |
US3452671A (en) * | 1966-08-02 | 1969-07-01 | Bullmer Bullmerwerk Karl | Fabric marking machine |
US3453936A (en) * | 1966-10-03 | 1969-07-08 | Murphy Ind Inc G W | Rotor vane |
US3465646A (en) * | 1967-10-05 | 1969-09-09 | Aro Corp | Pneumatic motor structure |
US3728052A (en) * | 1971-04-16 | 1973-04-17 | Dotko Inc | Air operated tool |
US3760478A (en) * | 1971-10-04 | 1973-09-25 | Borg Warner | Method for assembling a rotary sliding vane compressor |
US3790137A (en) * | 1970-06-02 | 1974-02-05 | T Wadensten | Rotating pneumatic vibrator |
US3827835A (en) * | 1971-12-03 | 1974-08-06 | Chukyo Electric Co | Low speed rotary fluid apparatus with elastic sealing liner |
US3827834A (en) * | 1972-02-19 | 1974-08-06 | M Kakimoto | Small diameter cylindrical air motor for driving grinders and the like |
US3885355A (en) * | 1972-02-19 | 1975-05-27 | Ushio Kk | Pneumatically driven grinder |
US4505649A (en) * | 1981-09-25 | 1985-03-19 | Jidosha Kiki Co., Ltd. | Vane pumps |
US4631012A (en) * | 1982-09-29 | 1986-12-23 | Dresser Industries, Inc. | Pneumatic tools |
US5017109A (en) * | 1990-01-26 | 1991-05-21 | Ingersoll-Rand Company | Cylinder and housing assembly for pneumatic tool |
US5087180A (en) * | 1990-04-19 | 1992-02-11 | Ingersoll-Rand Company | Fluid motor having reduced lubrication requirement |
US5383771A (en) * | 1993-12-20 | 1995-01-24 | Snap-On Incorporated | Air motor with offset front and rear exhausts |
USD408243S (en) * | 1998-02-23 | 1999-04-20 | S.P. Air Kabusiki Kaisha | Pneumatic hand tool |
USD435204S (en) * | 1999-11-12 | 2000-12-19 | S.P. Air Kabasiki Kaisha | Square drive wrench |
US6217306B1 (en) * | 1998-08-19 | 2001-04-17 | Cooper Technologies Company | Reversible double-throw air motor |
US20040058631A1 (en) * | 2002-09-23 | 2004-03-25 | Fen-Lien Lee | Pneumatic grinder |
US20070084310A1 (en) * | 2005-10-14 | 2007-04-19 | Sp Air Kabushiki Kaisha | Air ratchet tool with rotatable head |
US8480453B2 (en) | 2005-10-14 | 2013-07-09 | Sp Air Kabushiki Kaisha | Die grinder with rotatable head |
US20130298755A1 (en) * | 2012-05-14 | 2013-11-14 | Basso Industry Corp. | Motor assembly for pneumatic tool |
CN104074550A (en) * | 2014-07-08 | 2014-10-01 | 重庆春升科技发展有限公司 | Lubricating oil-free sliding vane expander and/or compressor |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1167154A (en) * | 1914-11-24 | 1916-01-04 | Philip J Darlington | Rotary motor. |
US1167995A (en) * | 1913-07-26 | 1916-01-11 | Lagonda Mfg Co | Motor. |
US2575524A (en) * | 1946-10-10 | 1951-11-20 | Independent Pneumatic Tool Co | Rotary tool |
US2715889A (en) * | 1952-11-05 | 1955-08-23 | Master Pneumatic Tool Company | Reversing pneumatic motor |
US2738755A (en) * | 1951-05-25 | 1956-03-20 | Gen Motors Corp | Illuminatable indicating devices |
US2903971A (en) * | 1957-05-27 | 1959-09-15 | Lowell J Collins | Pumps |
US3049103A (en) * | 1961-05-01 | 1962-08-14 | Pacific Valves Inc | Pressure actuated valve control |
US3080851A (en) * | 1961-10-03 | 1963-03-12 | Master Power Corp | End plate structure for pneumatic motor |
-
1962
- 1962-05-10 US US193780A patent/US3190183A/en not_active Expired - Lifetime
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1167995A (en) * | 1913-07-26 | 1916-01-11 | Lagonda Mfg Co | Motor. |
US1167154A (en) * | 1914-11-24 | 1916-01-04 | Philip J Darlington | Rotary motor. |
US2575524A (en) * | 1946-10-10 | 1951-11-20 | Independent Pneumatic Tool Co | Rotary tool |
US2738755A (en) * | 1951-05-25 | 1956-03-20 | Gen Motors Corp | Illuminatable indicating devices |
US2715889A (en) * | 1952-11-05 | 1955-08-23 | Master Pneumatic Tool Company | Reversing pneumatic motor |
US2903971A (en) * | 1957-05-27 | 1959-09-15 | Lowell J Collins | Pumps |
US3049103A (en) * | 1961-05-01 | 1962-08-14 | Pacific Valves Inc | Pressure actuated valve control |
US3080851A (en) * | 1961-10-03 | 1963-03-12 | Master Power Corp | End plate structure for pneumatic motor |
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3307454A (en) * | 1964-06-19 | 1967-03-07 | Atlas Copco Ab | Rotary piston machines and cylinder housings |
US3452671A (en) * | 1966-08-02 | 1969-07-01 | Bullmer Bullmerwerk Karl | Fabric marking machine |
US3453936A (en) * | 1966-10-03 | 1969-07-08 | Murphy Ind Inc G W | Rotor vane |
US3429230A (en) * | 1966-11-28 | 1969-02-25 | Robert C Quackenbush | Fluid driven motor |
US3465646A (en) * | 1967-10-05 | 1969-09-09 | Aro Corp | Pneumatic motor structure |
US3790137A (en) * | 1970-06-02 | 1974-02-05 | T Wadensten | Rotating pneumatic vibrator |
US3728052A (en) * | 1971-04-16 | 1973-04-17 | Dotko Inc | Air operated tool |
US3760478A (en) * | 1971-10-04 | 1973-09-25 | Borg Warner | Method for assembling a rotary sliding vane compressor |
US3827835A (en) * | 1971-12-03 | 1974-08-06 | Chukyo Electric Co | Low speed rotary fluid apparatus with elastic sealing liner |
US3827834A (en) * | 1972-02-19 | 1974-08-06 | M Kakimoto | Small diameter cylindrical air motor for driving grinders and the like |
US3885355A (en) * | 1972-02-19 | 1975-05-27 | Ushio Kk | Pneumatically driven grinder |
US4505649A (en) * | 1981-09-25 | 1985-03-19 | Jidosha Kiki Co., Ltd. | Vane pumps |
US4631012A (en) * | 1982-09-29 | 1986-12-23 | Dresser Industries, Inc. | Pneumatic tools |
US5017109A (en) * | 1990-01-26 | 1991-05-21 | Ingersoll-Rand Company | Cylinder and housing assembly for pneumatic tool |
US5087180A (en) * | 1990-04-19 | 1992-02-11 | Ingersoll-Rand Company | Fluid motor having reduced lubrication requirement |
US5383771A (en) * | 1993-12-20 | 1995-01-24 | Snap-On Incorporated | Air motor with offset front and rear exhausts |
USD408243S (en) * | 1998-02-23 | 1999-04-20 | S.P. Air Kabusiki Kaisha | Pneumatic hand tool |
US6217306B1 (en) * | 1998-08-19 | 2001-04-17 | Cooper Technologies Company | Reversible double-throw air motor |
USD435204S (en) * | 1999-11-12 | 2000-12-19 | S.P. Air Kabasiki Kaisha | Square drive wrench |
US20040058631A1 (en) * | 2002-09-23 | 2004-03-25 | Fen-Lien Lee | Pneumatic grinder |
US20070084310A1 (en) * | 2005-10-14 | 2007-04-19 | Sp Air Kabushiki Kaisha | Air ratchet tool with rotatable head |
US8480453B2 (en) | 2005-10-14 | 2013-07-09 | Sp Air Kabushiki Kaisha | Die grinder with rotatable head |
US20130298755A1 (en) * | 2012-05-14 | 2013-11-14 | Basso Industry Corp. | Motor assembly for pneumatic tool |
US9322417B2 (en) * | 2012-05-14 | 2016-04-26 | Basso Industry Corp. | Motor assembly for pneumatic tool |
CN104074550A (en) * | 2014-07-08 | 2014-10-01 | 重庆春升科技发展有限公司 | Lubricating oil-free sliding vane expander and/or compressor |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: R.T. ACQUIRING CORP., A CORP. OF DE. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:COOPER INDUSTRIES, INC.;REEL/FRAME:003841/0981 Effective date: 19810113 Owner name: R.T. ACQUIRING CORP., A CORP. OF, DELAWARE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:COOPER INDUSTRIES, INC.;REEL/FRAME:003841/0981 Effective date: 19810113 |
|
AS | Assignment |
Owner name: ROTOR TOOL CORPORATION Free format text: CHANGE OF NAME;ASSIGNOR:R.T. ACQUIRING CORP.;REEL/FRAME:003844/0231 Effective date: 19810113 Owner name: ROTOR TOOL CORPORATION, OHIO Free format text: CHANGE OF NAME;ASSIGNOR:R.T. ACQUIRING CORP.;REEL/FRAME:003844/0231 Effective date: 19810113 |
|
AS | Assignment |
Owner name: NATIONAL ACCEPTANCE COMPANY OF CALIFORNIA, A CA CO Free format text: SECURITY INTEREST;ASSIGNOR:ROTOR TOOL COMPANY, THE;REEL/FRAME:005251/0105 Effective date: 19861219 |