US3212295A - Axial piston type impulse tool - Google Patents

Axial piston type impulse tool Download PDF

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US3212295A
US3212295A US377795A US37779564A US3212295A US 3212295 A US3212295 A US 3212295A US 377795 A US377795 A US 377795A US 37779564 A US37779564 A US 37779564A US 3212295 A US3212295 A US 3212295A
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spindle
blade
housing
cam
tool
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US377795A
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Jack S Vaughn
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Ingersoll Rand Co
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Ingersoll Rand Co
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/145—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for fluid operated wrenches or screwdrivers
    • B25B23/1453—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for fluid operated wrenches or screwdrivers for impact wrenches or screwdrivers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C2/00—Rotary-piston engines
    • F03C2/30—Rotary-piston engines having the characteristics covered by two or more of groups F03C2/02, F03C2/08, F03C2/22, F03C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F03C2/304—Rotary-piston engines having the characteristics covered by two or more of groups F03C2/02, F03C2/08, F03C2/22, F03C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having both the movements defined in sub-group F03C2/08 or F03C2/22 and relative reciprocation between members

Definitions

  • the kinetic energy of the rotary hammer (of large mass) is transferred to the spindle (of relatively lower mass) by a collision between the jaws of the hammer and the spindle.
  • These conventional impact tools have several limitations. First the rigid jaws of the hammer and the similar jaws of the spindle are relatively light in order to satisfy the demand of the fabricating industries for a light portable tool. However the forces between the jaws of the hammer and the jaws of the spindle are very high during the time of im pact therebetween, with resultant breakage or failure of such jaws and a shorter service life than in other conventional power tools, such as those of the stall or clutch types.
  • a further object of the present invention is the provision of an impulse type tool which operates in a fluid at low force levels with resultant minimum wear and attendant longer service life than conventional impact tools.
  • Another object of the present invention is the provision of an impulse tool which is operable to control the final torque on a threaded fastener accurately and precisely within predetermined limits.
  • Still another object of the present invention is the provision of an impulse tool which, because of the simplicity of its structure, is easy to manufacture.
  • Yet another object of the present invention is the provision of an impulse tool which provides relatively quiet operation as compared to an impact tool.
  • a further object of the present invention is the provision of an improved tool of the impulse type, the major elements of which tool act to seal dynamically or at high velocity and function as a valve statically or at low velocity.
  • a still further object of the present invention is the provision of an impulse tool which is lighter in weight and faster in operation than the tools of the stall type and clutch type.
  • a further object of the present invention is the provision of an impulse tool which is operable to apply a torque or a series of impulses at an angle with respect to the longitudinal axis of the impulse tool.
  • a yet further object of the present invention is to provide an axial movement type impulse tool which is simple in structure, easy to manufacture and has a long operative life.
  • FIG. 1 is a side elevational view of the improved tool of the impulse type, shown in engagement with a threaded fastener and with a stationary casing means shown in vertical section;
  • FIG. 2 is a diagrammatic development view of a cam surface on the spindle
  • FIG. 3 is a vertical sectional view of the impulse tool showing the housing means as the driven member and before impulse;
  • FIG. 4 is a vertical sectional view along the line 44 of FIG. 2 in the direction of the arrows;
  • FIG. 5 is a side elevational view of the spindle and spindle cam
  • FIG. 6 is a View similar to FIG. 19 showing the cavity blocked off and after impulse
  • FIG. 7 is a side elevational view along the line 77 of FIG. 6 in the direction of the arrows;
  • FIG. 8 is a view similar to FIG. 2 of an alternative embodiment
  • FIG. 9 is a view similar to FIG. 7 of the alternative embodiment.
  • FIG. 9a is a view similar to FIG. 3 showing the spindle means connected to the drive means and the housing means connected to the square drive for the socket fastener;
  • FIG. 9b is a view similar to FIGS. 3, 9a showing the pressure relief means and the blade slot in the spindle means, with the cam carried by the housing means and with the housing means as the driven element.
  • an impulse tool for applying a predetermined torque to an object.
  • This impulse tool comprises housing means provided with a cavity adapted to contain a fluid, a spindle means rotatable in the cavity and in the fluid, and drive means connected one of the housing means and spindle means for impulsing the other which is connected to the object.
  • One of the housing means and the spindle means is provided with a recess.
  • Blade means are reciprocable in the recess and are provided with fluid bypass means in communication with the cavity on both sides of the blade means.
  • Cam means are in the other of the housing means and the spindle means and are engageable with the blade means.
  • Peak means are on the cam means in engagement with the one.
  • the cam means are operative during a relatively small portion of each revolution of the relative rotary movement to move the fluid bypass means into the recess.
  • the blade means and the cam means and the peak means and the one are operable during the relatively small portion to seal off the cavity into a high pressure portion thereby applying a torque to the object.
  • the axial movement type impulse tool has a reciprocable blade means in the housing means.
  • Spindle cam means is rotatable in the housing means and in the fluid by means of the impulse.
  • the impulse tool of the present invention may be advantageously employed for applying a torque to objects and as a source of fluid impulses in general, the impulse tool of the present invention is particularly adapted for use in conjunction with applying a torque to a threaded fastener and hence it has been so illustrated and will be so described.
  • the impulse tool of the present invention for applying torque to a nut N on bolt S by means of socket 25 is indicated generally by the reference letter T.
  • this impulse tool T has a housing means A provided with a cavity 2k A adapted to contain a fluid, such as oil F.
  • blade means such as the blade 161 (FIGS. 2-9) is reciprocable in housing means A such as the inner housing 160.
  • Housing means A such as the inner housing 160.
  • Spindle means such as the spindle cam 164 (FIGS. 26), on the spindle shaft 16k (FIGS. 3, 5, 6) is rotatable in the inner housing 160 and in the oil F by the impulse.
  • the inner housing 160 is rotated by the output shaft 33k (FIGS. 3, 6) of an air motor D (FIG. 1) in the direction of the arrow (FIGS. 3, 6) and is provided with a cavity 2k (FIGS. 2, 3, 6).
  • the blade 161 is reciprocable in a longitudinal slot 162 (FIGS. 2, 3, 6) in the inner housing 160.
  • a relief valve 168 is connected to the slot 162 (FIGS. 2, 3, 6).
  • the by-pass holes 166 may be eliminated and the pressure relief means may comprise a relief valve 168a carried by the rotation inner housing 160 and connected by lines 169a and 16919 disposed about the slot 162 and communicating with the cavity 2k. Leakage around the blade 161 in slot 162 permits reciprocating movement of the blade 161 in the slot 162.
  • the spindle means B may be connected to the output shaft 33k of a drive means, such as an air motor D (FIG. 1), as the driven member and the housing meansA is connected by means of its hous- 4 ing shaft 167 to the square drive 16a for the fastener socket.
  • a drive means such as an air motor D (FIG. 1)
  • the pressure relief means, (Le, a relief valve 168 and the blade slot 162 may be contained in the spindle means B and that the cam 164 may be carried by the housing means A which is driven by means of the output shaft 33k of an air motor D (FIG. 1).
  • an impulse tool which applies a force, namely oil pressure, on the spindle blade and spindle for a short time (namely during the dynamic sealing portion of the operating cycle of the impulse tool) thus providing operation in a fluid at low force levels with resultant minimum wear and attendant longer service life than conventional impact tools.
  • the impulse tool of the present invention is operable to control the final torque on a threaded fastener accurately and precisely within predetermined practical limits. Further, because of the simplicity of its structure, the impulse tool is easy and economical to manufacture. In addition, the impulse tool provides relatively quiet operation as compared wtih conventional impact tools.
  • the impulse tool acts as a seal dynamically and as a valve statically; has all of the advantages of the stall type, clutch type and impact type tools and none of the disadvantages thereof; is lighter in weight and faster in operation than the tools of the stall type and clutch type.
  • an axial movement type impulse tool which has a long operative life, is simple in structure and is hence easy to manufacture.
  • An impulse tool for applying a torque to an object comprising:
  • blade means reciprocable in said recess and provided with fluid bypass means in communication with said cavity on both sides on said blade means
  • An impulse tool for applying a torque to an object comprising:
  • housing means provided wtih a cavity for sealingly containing a fluid
  • blade means reciprocable in said recess and provided with a fluid leakage means in communication 20 with said cavity on both sides of said blade means
  • cam means being operative during a relatively BROUGHTON G.
  • DURHAM Primary Examiner.
  • FRANK SUSKO Examiner.

Description

Oct. 19, 1965 J. s. VAUGHN 3,212,295
AXIAL PISTON TYPE IMPULSE TOOL Original Filed Dec. 12, 1962 4 Sheets-Sheet 1 FIG! INVENTOR JACK .5. VAUGHN BY l vi ORNEY Oct. 19, 1965 J. 5. VAUGHN AXIAL PISTON TYPE IMPULSE TOOL 4 Sheets-Sheet 2 Original Filed Dec. 12, 1962 2 E m m l m y QW w L AM EM Ak A M87 B I W 7 m D, H 6 1i 6 V v H lsk INVENTOFZ JACK S. l4U6H/V BY W ATTORNEY Oct. 19, 1965 J. 5. VAUGHN 3312,29
AXIAL PISTON TYPE IMPULSE TOOL Original Filed Dec. 12, 1962 4 Sheets-Sheet 3 F |e| C I64 F E j FIG. 5
INVENTOK JACK S. Vfil/GH/V Oct 1 1965 J. s. VAUGHN 3,232,295
AXIAL PISTON TYPE IMPULSE TOOL Original Filed Dec. 12, 1962 4 Sheets-Sheet 4 INVENTUE JAG/f 5. VAUGHN ATTORNEY United States Patent 12 Claims. (Cl. 6426) The present invention relates to impulse tools of the type disclosed in US. Patent No. 3,116,617 issued January 7, 1964, to D. K. Skoog and in US. patent application Serial No. 285,160 filed March 18, 1963, by D. K. Skoog, and more particularly to an improved impulse tool of axial piston type. This application is a divisional application of US. patent application Serial No. 244,151 filed December 12, 1962, by D. K. Skoog et a1.
Heretofore, conventional portable, power operated tools for driving nuts, bolts and screws or for applying a torque to other objects have been of the stall, clutch and impact type. While the stall type and clutch type tools give satisfactory torque control in most applications, these types are larger and hence heavier than the impact type tool. Further the stall type and clutch type tools are slower in operation than the impact type tool. In addition the stall type and clutch type tools provide an undesirable torque reaction to the operator, which torque reaction is not present in a tool of the impact type.
In the impact type of tool the kinetic energy of the rotary hammer (of large mass) is transferred to the spindle (of relatively lower mass) by a collision between the jaws of the hammer and the spindle. These conventional impact tools have several limitations. First the rigid jaws of the hammer and the similar jaws of the spindle are relatively light in order to satisfy the demand of the fabricating industries for a light portable tool. However the forces between the jaws of the hammer and the jaws of the spindle are very high during the time of im pact therebetween, with resultant breakage or failure of such jaws and a shorter service life than in other conventional power tools, such as those of the stall or clutch types. Secondly, with these conventional impact tools it is very difficult to control or limit the final torque on a threaded fastener to a final predetermined value within satisfactory limits of accuracy. Further the impact tools are difiicult to manufacture because of their complicated structure and are rather noisy in their operation.
It is the general object of the present invention to avoid and overcome the foregoing and other difficulties of and objections to prior art practices by the provision of an improved tool of the impulse type which tool has all of the advantages of the stall type, clutch type and impact type tools and none of the disadvantages thereof.
A further object of the present invention is the provision of an impulse type tool which operates in a fluid at low force levels with resultant minimum wear and attendant longer service life than conventional impact tools.
Another object of the present invention is the provision of an impulse tool which is operable to control the final torque on a threaded fastener accurately and precisely within predetermined limits.
Still another object of the present invention is the provision of an impulse tool which, because of the simplicity of its structure, is easy to manufacture.
Yet another object of the present invention is the provision of an impulse tool which provides relatively quiet operation as compared to an impact tool.
A further object of the present invention is the provision of an improved tool of the impulse type, the major elements of which tool act to seal dynamically or at high velocity and function as a valve statically or at low velocity.
A still further object of the present invention is the provision of an impulse tool which is lighter in weight and faster in operation than the tools of the stall type and clutch type.
A further object of the present invention is the provision of an impulse tool which is operable to apply a torque or a series of impulses at an angle with respect to the longitudinal axis of the impulse tool.
A yet further object of the present invention is to provide an axial movement type impulse tool which is simple in structure, easy to manufacture and has a long operative life.
For a better understanding of the present invention reference should be had to the accompanying drawings, wherein like numerals of reference indicate similar parts throughout the several views and wherein:
FIG. 1 is a side elevational view of the improved tool of the impulse type, shown in engagement with a threaded fastener and with a stationary casing means shown in vertical section;
FIG. 2 is a diagrammatic development view of a cam surface on the spindle;
FIG. 3 is a vertical sectional view of the impulse tool showing the housing means as the driven member and before impulse;
FIG. 4 is a vertical sectional view along the line 44 of FIG. 2 in the direction of the arrows;
FIG. 5 is a side elevational view of the spindle and spindle cam;
FIG. 6 is a View similar to FIG. 19 showing the cavity blocked off and after impulse;
FIG. 7 is a side elevational view along the line 77 of FIG. 6 in the direction of the arrows;
FIG. 8 is a view similar to FIG. 2 of an alternative embodiment;
FIG. 9 is a view similar to FIG. 7 of the alternative embodiment;
FIG. 9a is a view similar to FIG. 3 showing the spindle means connected to the drive means and the housing means connected to the square drive for the socket fastener;
FIG. 9b is a view similar to FIGS. 3, 9a showing the pressure relief means and the blade slot in the spindle means, with the cam carried by the housing means and with the housing means as the driven element.
The aforesaid objects of the present invention and other objects which will become apparent as the description proceeds are achieved by providing an impulse tool for applying a predetermined torque to an object. This impulse tool comprises housing means provided with a cavity adapted to contain a fluid, a spindle means rotatable in the cavity and in the fluid, and drive means connected one of the housing means and spindle means for impulsing the other which is connected to the object. One of the housing means and the spindle means is provided with a recess. Blade means are reciprocable in the recess and are provided with fluid bypass means in communication with the cavity on both sides of the blade means. Cam means are in the other of the housing means and the spindle means and are engageable with the blade means. Peak means are on the cam means in engagement with the one. The cam means are operative during a relatively small portion of each revolution of the relative rotary movement to move the fluid bypass means into the recess. The blade means and the cam means and the peak means and the one are operable during the relatively small portion to seal off the cavity into a high pressure portion thereby applying a torque to the object.
The axial movement type impulse tool has a reciprocable blade means in the housing means. Spindle cam means is rotatable in the housing means and in the fluid by means of the impulse.
While the impulse tool of the present invention may be advantageously employed for applying a torque to objects and as a source of fluid impulses in general, the impulse tool of the present invention is particularly adapted for use in conjunction with applying a torque to a threaded fastener and hence it has been so illustrated and will be so described.
With specific reference to the form of the present invention illustrated in the drawings, and referring particularly to FIG. 1, the impulse tool of the present invention for applying torque to a nut N on bolt S by means of socket 25 is indicated generally by the reference letter T.
As shown in FIG. 1 this impulse tool T has a housing means A provided with a cavity 2k A adapted to contain a fluid, such as oil F.
FIGS. 2-9, 9a-9b In this embodiment blade means, such as the blade 161 (FIGS. 2-9) is reciprocable in housing means A such as the inner housing 160. Spindle means, such as the spindle cam 164 (FIGS. 26), on the spindle shaft 16k (FIGS. 3, 5, 6) is rotatable in the inner housing 160 and in the oil F by the impulse.
The inner housing 160 is rotated by the output shaft 33k (FIGS. 3, 6) of an air motor D (FIG. 1) in the direction of the arrow (FIGS. 3, 6) and is provided with a cavity 2k (FIGS. 2, 3, 6). The blade 161 is reciprocable in a longitudinal slot 162 (FIGS. 2, 3, 6) in the inner housing 160.
As the inner housing 160 carrying blade 161 in slot 162 (FIGS. 2, 3) rotates from the position shown in FIG. 3 to the position shown in FIG. 6, the blade 161 encountered the bottom B (FIGS. 2, 6) and rides up the spindle cam 164 thereby causing movement of the blade 161 toward the top of the slot 162 (as viewed in FIG. 6) and compression of the oil F in the slot 162. At block-off point C (FIG. 2) the by-pass holes 166 (FIGS. 2,3, 6) in the blade 161 have moved behind the face of the cavity 2k into the slot 162 (FIG. 6).
Further rotation of the blade 161 between block-off point C7 and the peak D (FIGS. 2-6) of the cam 164 through the angle B (FIG. 4) compresses the oil F entrapped therebetween in high pressure section HP which high pressure portion HP couples the spindle cam'164 and blade 161 and thereby resulting in an impulse to (and rotation of) the spindle cam 164, the spindle k and spindle shaft 16k. This fluid coupling or high pres sure portion HP is sealed by the blade 161 against the cam 164 and by the peak D of the cam 164 against the inner housing 160.
One impulse occurs during each revolution of the inner housing 160. However, by the use of multiple cams 164 (not shown) on the face of the spindle 15k multiple impulses may be obtained.
Leakage around the blade 161 (FIG. 2) balances the oil pressure in high. pressure portion HP and in slot 162.
To provide pressure relief means at predetermined torque, a relief valve 168 is connected to the slot 162 (FIGS. 2, 3, 6).
,Referring to FIGS. 8 and 9 the by-pass holes 166 (FIGS. 2-3, 6-7) may be eliminated and the pressure relief means may comprise a relief valve 168a carried by the rotation inner housing 160 and connected by lines 169a and 16919 disposed about the slot 162 and communicating with the cavity 2k. Leakage around the blade 161 in slot 162 permits reciprocating movement of the blade 161 in the slot 162.
As shown in FIG. 9a the spindle means B may be connected to the output shaft 33k of a drive means, such as an air motor D (FIG. 1), as the driven member and the housing meansA is connected by means of its hous- 4 ing shaft 167 to the square drive 16a for the fastener socket.
Referring now to FIG. 9b it will be understood by those skilled in the art that alternatively the pressure relief means, (Le, a relief valve 168 and the blade slot 162 may be contained in the spindle means B and that the cam 164 may be carried by the housing means A which is driven by means of the output shaft 33k of an air motor D (FIG. 1).
It will be recognized by those skilled in the art that the objects of the present invention have been achieved by the provision of an impulse tool which applies a force, namely oil pressure, on the spindle blade and spindle for a short time (namely during the dynamic sealing portion of the operating cycle of the impulse tool) thus providing operation in a fluid at low force levels with resultant minimum wear and attendant longer service life than conventional impact tools.
The impulse tool of the present invention is operable to control the final torque on a threaded fastener accurately and precisely within predetermined practical limits. Further, because of the simplicity of its structure, the impulse tool is easy and economical to manufacture. In addition, the impulse tool provides relatively quiet operation as compared wtih conventional impact tools. The impulse tool acts as a seal dynamically and as a valve statically; has all of the advantages of the stall type, clutch type and impact type tools and none of the disadvantages thereof; is lighter in weight and faster in operation than the tools of the stall type and clutch type.
Further an axial movement type impulse tool has been provided which has a long operative life, is simple in structure and is hence easy to manufacture.
While in accordance with the patent statutes one best known embodiment and alternative embodiments of the present invention has been illustrated and described in detail, it is to be particularly understood that the invention is not limited thereto or thereby.
I claim:
1. An impulse tool for applying a torque to an object, said impulse tool comprising:
(a) housing means provided with a cavity for sealingly containing a fluid,
(b) spindle means in said cavity and in said fluid,
(c) drive means operatively associated with one of said housing means and said spindle means for causing relative rotary movement between said housing means and said spindle means,
((1) the other of said housing means and said spindle means being adapted to engage said object,
(e) one of said housing means and said spindle means being provided with a recess,
(f) blade means reciprocable in said recess and provided with fluid bypass means in communication with said cavity on both sides on said blade means,
(g) cam means on the other of said housing means and said spindle means and engageable with said blade means,
(h) peak means on said cam means in engagement With said one,
(i) said cam means being operative during a relatively small portion of each. revolution of said relative rotary movement to move said fluid bypass means into said recess,
(j). said blade means and said cam means and said peak means and said one being operable during said relatively small portion to seal off said cavity into a high pressure portion thereby applying a torque to said object.
2. The impulse tool recited in claim 1 wherein said drive means is connected to said spindle means.
3. The impulse tool recited in claim 1 wherein said drive means is connected to said housing means.
4. The impulse tool recited in claim 1 wherein said housing means is provided with said recess.
5. The impulse tool recited in claim 1 wherein said spindle means is provided with said recess.
6. The impulse tool recited in claim 1 wherein said fluid bypass means comprises a bypass hole through said blade means. 5
7. An impulse tool for applying a torque to an object comprising:
(a) housing means provided wtih a cavity for sealingly containing a fluid,
(b) spindle means in said cavity and in said fluid,
(c) drive means operatively associated with one of said housing means and said spindle means for causing relative rotary movement between said housing means and said spindle means,
(d) the other of said housing means and said spindle 15 means being adapted to engage said object,
(e) one of said housing means and said spindle means being provided with a recess,
(f) blade means reciprocable in said recess and provided with a fluid leakage means in communication 20 with said cavity on both sides of said blade means,
(g) cam means on the other of said housing means and said spindle means and engageable with said blade means,
(h) peak means on said cam means in engagement with said one,
(i) said cam means being operative during a relatively BROUGHTON G. DURHAM, Primary Examiner. FRANK SUSKO, Examiner.
small portion of each revolution of said relative rotary movement to move said cam means into said recess to decrease said fluid leakage means,
(i) said blade means and said cam means and said peak means and said one being operable during said relatively small portion to seal otf said cavity into a high pressure portion thereby applying a torque to said object.
8. The impulse tool recited in claim 7 wherein said 10 drive means is connected to said spindle means.
9. The impulse tool recited in claim 7 wherein said drive means is connected to said housing means.
10. The impulse tool recited in claim 7 wherein said housing means is provided with said recess.
11. The impulse tool recited in claim 7 wherein said spindle means is provided with said recess.
12. The impulse tool recited in claim 7 wherein said fluid leakage means comprises the clearance between said recess and said blade means.
References Cited by the Examiner UNITED STATES PATENTS 8/51 Ramsey 192--58 1/64 Skoog 6426

Claims (1)

1. AN IMPULSE TOOL FOR APPLYING A TORQUE TO AN OBJECT, SAID IMPULSE TOOL COMRPISING: (A) HOUSING MEANS PROVIDED WITH A CAVITY FOR SEALINGLY CONTAINING A FLUID, (B) SPINDLE MEANS IN SAID CAVITY AND IN SAID FLUID, (C) DRIVE MEANS OPERATIVELY ASSOCIATED WITH ONE OF SAID HOUSING MEANS AND SAID SPINDLE MEANS FOR CAUSING RELATIVE ROTARY MOVEMENT BETWEEN SAID HOUSING MEANS AND SAID SPINDLE MEANS, (D) THE OTHER OF SAID HOUSING MEANS AND SAID SPINDLE MEANS BEING ADAPTED TO ENGAGE SAID OBJECT, (E) ONE OF SAID HOUSING MEANS AND SAID SPINDLE MEANS BEING PROVIDED WITH A RECESS, (F) BLADE MEANS RECIPROCABLE IN SAID RECESS AND PROVIDED WITH FLUID BYPASS MEANS IN COMMUNICATION WITH SAID CAVITY ON BOTH SIDES ON SAID BLADE MEANS, (G) CAM MEANS ON THE OTHER OF SAID HOUSING MEANS AND SAID SPINDLE MEANS AND ENGAGEABLE WITH SAID BLADE MEANS, (H) PEAK MEANS ON SAID CAM MEANS IN ENGAGEMENT WITH SAID ONE, (I) SAID CAM MEANS BEING OPERATIVE DURING A RELATIVELY SMALL PORTION OF EACH REVOLUTION OF SAID RELATIVE ROTARY MOVEMENT TO MOVE SAID FLUID BYPASS MEANS INTO SAID RECESS, (J) SAID BLADE MEANS AND SAID CAM MEANS AND SAID PEAK MEANS AND SAID ONE BEING OPERABLE DURING SAID RELATIVELY SMALL PORTION TO SEAL OFF SAID CAVITY INTO A HIGH PRESSURE PORTION THEREBY APPLYING A TORQUE TO SAID OBJECT.
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US244151A US3210961A (en) 1962-12-12 1962-12-12 Spindle means for an impulse tool
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3319723A (en) * 1965-04-01 1967-05-16 Ingersoll Rand Co Axial piston pulse generator
US4635731A (en) * 1984-12-13 1987-01-13 Chicago Pneumatic Tool Company Impulse tool
EP1179395A3 (en) * 2000-08-11 2003-07-23 Uryu Seisaku Limited Impulse torque generator for a hydraulic power wrench
US6782956B1 (en) 2003-03-07 2004-08-31 Ingersoll-Rand Company Drive system having an inertial valve
US20040173364A1 (en) * 2003-03-07 2004-09-09 Ingersoll-Rand Company Rotary tool

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564212A (en) * 1948-05-08 1951-08-14 George H Ramsey Power converter
US3116617A (en) * 1961-12-12 1964-01-07 Ingersoll Rand Co Fluid impulse torque tool

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564212A (en) * 1948-05-08 1951-08-14 George H Ramsey Power converter
US3116617A (en) * 1961-12-12 1964-01-07 Ingersoll Rand Co Fluid impulse torque tool

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3319723A (en) * 1965-04-01 1967-05-16 Ingersoll Rand Co Axial piston pulse generator
US4635731A (en) * 1984-12-13 1987-01-13 Chicago Pneumatic Tool Company Impulse tool
EP1179395A3 (en) * 2000-08-11 2003-07-23 Uryu Seisaku Limited Impulse torque generator for a hydraulic power wrench
US6782956B1 (en) 2003-03-07 2004-08-31 Ingersoll-Rand Company Drive system having an inertial valve
EP1454715A2 (en) * 2003-03-07 2004-09-08 Ingersoll-Rand Company Drive system having an inertial valve
US20040173364A1 (en) * 2003-03-07 2004-09-09 Ingersoll-Rand Company Rotary tool
US6863134B2 (en) 2003-03-07 2005-03-08 Ingersoll-Rand Company Rotary tool
EP1454715A3 (en) * 2003-03-07 2006-01-18 Ingersoll-Rand Company Drive system having an inertial valve

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