US2180883A - Fuel pump assembly - Google Patents

Fuel pump assembly Download PDF

Info

Publication number
US2180883A
US2180883A US110485A US11048536A US2180883A US 2180883 A US2180883 A US 2180883A US 110485 A US110485 A US 110485A US 11048536 A US11048536 A US 11048536A US 2180883 A US2180883 A US 2180883A
Authority
US
United States
Prior art keywords
liner
bore
sleeve
barrel
pump
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
Application number
US110485A
Inventor
Scott Philip Lane
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SUPER DIESEL TRACTOR Corp
Original Assignee
SUPER DIESEL TRACTOR CORP
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SUPER DIESEL TRACTOR CORP filed Critical SUPER DIESEL TRACTOR CORP
Priority to US110485A priority Critical patent/US2180883A/en
Application granted granted Critical
Publication of US2180883A publication Critical patent/US2180883A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2700/00Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
    • F02M2700/13Special devices for making an explosive mixture; Fuel pumps
    • F02M2700/1317Fuel pumpo for internal combustion engines
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49636Process for making bearing or component thereof
    • Y10T29/49643Rotary bearing
    • Y10T29/49647Plain bearing
    • Y10T29/49668Sleeve or bushing making
    • Y10T29/49677Sleeve or bushing making having liner
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49826Assembling or joining
    • Y10T29/49863Assembling or joining with prestressing of part
    • Y10T29/49865Assembling or joining with prestressing of part by temperature differential [e.g., shrink fit]

Definitions

  • 'Ihis invention relates to a means for making, sizing and maintaining the size of a barrel in which a member is mounted for reciprocation.
  • 'I'he invention relates, therefore, to a pump or analogous device and to the method of making it.
  • Oneobject of the invention is to provide a pump or similar combination of barrel and plunger in which the bore in the barrel ismade of approximately the right size, is corrected as to roundness and parallelism and is then finally reduced to the proper internal diameter by exertin'g pressure upon a liner which forms a part of the barrel.
  • Another object of the invention is to provide means for re-sizing the barrel.
  • i6 still further object is to provide means for taking up wear.
  • FIG. 1 is a longitudinal section through a pump, wherein portions of a pump and a pump barrel made in accordance with my invention are shown:
  • Figure 2 is a sectional detail of a modified form of barrel construction.
  • member I is provided with lateral projections or ears 4 which are perforated as at 5 for attachment to a suitable base.
  • the pump housing is partially closed in by the portion 6 which may be shouldered as at 1.
  • 8 designates a further or additional part of the pump houso ing which is provided with a bore 9 generally axially aligned with the bore 2.
  • the details of this sectionand of the pump in general, including the valves, the inlet and theoutlet form no essential part of the invention and are not cie-1 scribed in detail.
  • the barrel construction of the present invention might be applied to a large variety of pumps whose details voi construction are independent of the barrel construction.
  • 'I'he barrel is formed of two parts, a sleeve or jacket I0 provided at one end preferably with a laterally extending flange II which is seated against the shoulder 'I of the member I.
  • 'I'he sleeve may be tapered interiorly as at I2.
  • a liner E I3 exteriorlytapered to correspond to the taper 5 I2 of the sleeve I0 is provided and is inserted within'the sleeve.
  • Theliner has preferably'a cylindrical bore I4 which is ilared at one end as at I5 to receive a sealing member I6 a portion of which lies' in a o corresponding flared portion I'I of the bore 9 size and is then pressed into the sleeve.
  • a piston I8 is mounted for reciprocation within the liner. It may be of any desired shape but in the formA here shown ,is pointed as at I9.
  • a contact member maybe removably 'mounted in a perforation 26 in the closed bottom 21 of thecross head.
  • This member 25 may be shouldered at 28 to be seated in a corresponding shoulder 29 in the cross head.
  • Aspring or other member 30 holds the contact member 25v removably in place.
  • Figure 2 shows a modied barrel construction in which, instead ofthe interiorly tapered sleeve Ill, a cylindrical sleeve 3l is used. Its exterior contour is the same as that of the sleevel I0 and it is seated in the pump housing in the same manner.
  • a liner 32 which corresponds on its exterior to the interior of the sleeve 3
  • the sleeve may be formed as shown with a tapered bore.
  • 'I'he liner which maybe of cast iron or other suitable material isv made preferablywith a tapered exterior corresponding in taper with that of the sleeve.
  • the sleeve is oi' a material of high tensile strength which, therefore, resists deformation.
  • the borev or hole inthe liner is made approximately to The bore is normally made slightly larger than necessary and after being seated within the sleeve the liner is driven or pressed, further in to ⁇ close upthe bore to the desired diameter..
  • a further advantage of this device is that after wear occurs and the bore becomes oversize, the linercan be brought again to the proper size. It is necessary merely to force the liner further along the taper within the sleeve and it is resized to the desired dimension.
  • the liner Whether in the form of Figure 1 or Figure 2, may be initially seated within the lsleeve before the liner bore is formed and after that bore has been formed, in the case of the tapered arrangement of Figure 1, the linermaybe further driven in to complete the sizing operation or, in the form of- Figure 2, the shrinking or other operation necessary to compress the liner to proper size may be carried out.
  • the adjustment ofthe liner and sleeve may be such as to produce first too tight f a t and movement of the parts may, when this occurs, be reversed to permit sufficient expansion on the part of the liner to produce the proper size of bore.
  • the method of sizing a liner in a multi-part pump barrel which includes the steps of forming a hollow liner with tapered exterior, forming a hollow sleeve with correspondingly tapered interior, forcing the two together axially and thereby decreasing the internal size of the liner to the desired final size.
  • the method of sizing a liner in a multi-part pump barrel which includes the steps of forming a hollow liner with tapered exterior, leaving the interior size thereof 'greater than' that nally necessary, forming a hollow sleeve with correspondingly tapered interior, forcing the two together axially and vthereby substantially uniformly decreasing the internal size of the liner to the desired final substantially uniform size.
  • the methodof sizing a liner in a multi-part p ump barrel and guiding assembly which includes the following steps: making a hollow liner, forming through said liner a round, straight hole to a slightly variable, over-sized diameter, making a cooperating compression member, placing said compression member about said liner, moving the compression member with respect to the said liner, and thereby compressing the liner and reducing by said compression the outside diameter of the liner to a minute amount and, also, thereby reducing the diameter of the bore of said liner uniformly, and holding the stresses set up within both the liner and the compression member well within the elastic limits of the materials, and maintaining the inner walls of the liner bore straight during such compressive step.
  • the method of making and sizing a liner in a multi-part pump barrel assembly which includes the steps of making a liner, boring a round, straight hole axially through said liner, making and placing about said liner a co-operating compression member, moving the compression .member axially with respect to said liner and thereby exerting compression upon said liner and decreasing the internal diameter of the liner.
  • the method of making and of sizing a liner in a multi-part pump barrel assembly which includes the following steps: lmaking a liner, making a round, straight-sided, slightly over-sized hole from end to end of said liner, making a compression member, placing said compression member about said liner in contact therewith, moving thecompression member with respect to said liner and exerting as a result of such movement I a uniform compression upon said liner and thereby reducing uniformly the internal dimension of the liner, and simultaneously maintaining the inner walls of the liner straight.
  • the method of sizing the bore of a liner in a multi-part pump barrel assembly having a liner, a jacket therefor, and a plunger return, and adapted to be reciprocated therein, which method includes the following steps: machining a bore in the liner to be slightly over-'size with respect to the said plunger, machining a tapered exterior wall on the liner, machining a mating tapered interior wall on the jacket, forcing the jacket and the liner together'by relative longitudinal movement along the axis of the tapers, and compressing the liner by means of the jacket uniformly along radial lines, and reducing the radial dimensions of the liner uniformly, and continuing the said movement until a predetermined running fit between bore and plunger is reached.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Fuel-Injection Apparatus (AREA)

Description

Nov. 21, 1939. P. L. SCOTT FUEL PUMP ASSEMBLY Filed Nov. l2, 1936 Patented Nv. 21, 15939 PATENT- OFFICE FUEL rum ASSEMBLY Philip Lane Scott, Chicago, Ill., assignor to Super Diesel Tractor Corporation, La Porte, Ind.,'a corporation of New York Application November 12, 1936, Serial No. 110,485
6 Claims.
'Ihis invention relates to a means for making, sizing and maintaining the size of a barrel in which a member is mounted for reciprocation.. 'I'he invention relates, therefore, to a pump or analogous device and to the method of making it.
Oneobject of the invention is to provide a pump or similar combination of barrel and plunger in which the bore in the barrel ismade of approximately the right size, is corrected as to roundness and parallelism and is then finally reduced to the proper internal diameter by exertin'g pressure upon a liner which forms a part of the barrel. Another object of the invention is to provide means for re-sizing the barrel. A
i6 still further object is to provide means for taking up wear.
Other objects will appear from time to time in .the speciiication and claims.
e The invention is illustrated more or less diagrammatically in the accompanying drawing,
wherein:
Figure 1 is a longitudinal section through a pump, wherein portions of a pump and a pump barrel made in accordance with my invention are shown:
Figure 2 is a sectional detail of a modified form of barrel construction.
Like parts areA designated by like characters throughout the specification and drawing. lo 'Ihe numeral I designates a portion of a pump housing provided with a cylindrical bore or hollow 2 in the lower end oi which may be seated a spring 3 to prevent separation of the parts. The
member I is provided with lateral projections or ears 4 which are perforated as at 5 for attachment to a suitable base. At its opposite end the pump housing is partially closed in by the portion 6 which may be shouldered as at 1. 8 designates a further or additional part of the pump houso ing which is provided with a bore 9 generally axially aligned with the bore 2. The details of this sectionand of the pump in general, including the valves, the inlet and theoutlet form no essential part of the invention and are not cie-1 scribed in detail. The barrel construction of the present invention might be applied to a large variety of pumps whose details voi construction are independent of the barrel construction.
'I'he barrel is formed of two parts, a sleeve or jacket I0 provided at one end preferably with a laterally extending flange II which is seated against the shoulder 'I of the member I. 'I'he sleeve may be tapered interiorly as at I2. A liner E I3 exteriorlytapered to correspond to the taper 5 I2 of the sleeve I0 is provided and is inserted within'the sleeve.
Theliner has preferably'a cylindrical bore I4 which is ilared at one end as at I5 to receive a sealing member I6 a portion of which lies' in a o corresponding flared portion I'I of the bore 9 size and is then pressed into the sleeve.
(ci. asa-149.55
of the housing member 8. A piston I8 is mounted for reciprocation within the liner. It may be of any desired shape but in the formA here shown ,is pointed as at I9.
' 24 is mounted to reciprocate within the housing section I and also surrounds thebarrel assembly. A contact member maybe removably 'mounted in a perforation 26 in the closed bottom 21 of thecross head. This member 25 may be shouldered at 28 to be seated in a corresponding shoulder 29 in the cross head. Aspring or other member 30 holds the contact member 25v removably in place.
Figure 2 shows a modied barrel construction in which, instead ofthe interiorly tapered sleeve Ill, a cylindrical sleeve 3l is used. Its exterior contour is the same as that of the sleevel I0 and it is seated in the pump housing in the same manner. A liner 32 which corresponds on its exterior to the interior of the sleeve 3| is used. It is made cylindrical without exterior taper. It is made approximately to interior size and is then inserted within the sleeve which is shrunk or otherwise compressed on it to the desired degree to produce the proper internal size of the' liner bore.
In manufacture the sleeve. may be formed as shown with a tapered bore. 'I'he liner which maybe of cast iron or other suitable material isv made preferablywith a tapered exterior corresponding in taper with that of the sleeve. The sleeve is oi' a material of high tensile strength which, therefore, resists deformation. The borev or hole inthe lineris made approximately to The bore is normally made slightly larger than necessary and after being seated within the sleeve the liner is driven or pressed, further in to` close upthe bore to the desired diameter.. By this means absolutely. accurate sizing ofthe liner bore can be accomplished without the necessity of extremely accurate original work. The bore can be closed down to thedesired .size with great,
accuracyand with extreme simplicity by forcing the liner into the sleeve the necessary distance. Thus, since the sizing of the bore of the liner is simply accomplished, the manufacturing problem is simplied and in manufacture the attention may be concentrated upon making holes or bores of proper trueness and surface finish, and thenal sizing operation, instead of being accomplished as a machining or lapping or similar operation is carried out by forcing the liner into the sleeve until the proper degree of fit between sleeve and plunger is obtained.
A further advantage of this device is that after wear occurs and the bore becomes oversize, the linercan be brought again to the proper size. It is necessary merely to force the liner further along the taper within the sleeve and it is resized to the desired dimension.
While there is shown a tapered bore and tapered liner andwhile with this form of the invention the sizing is accomplished by forcing the liner the necessary distance into the sleeve after it has been made true and given proper roundness and parallelism, it is obvious that the sleeve might be shrunk or otherwise tightened upon the liner to giveit the necessary size. Whichever form of the invention is used, the liner can be finished by what may be considered general shop work, in which it can be readily heldl to a very few ten-thousandths of an inch. A frequent condition will be that when the bore is properly nished and the plunger inserted there will be a slight clearance between the plunger and the bore, this clearance being of the order of a very few ten-thousandths of an inch, and this clearance is then taken up by exerting pressure on the liner either by forcing it into the tapered bore of the sleeve or by otherwise compressing it within the sleeve.
The liner, Whether in the form of Figure 1 or Figure 2, may be initially seated within the lsleeve before the liner bore is formed and after that bore has been formed, in the case of the tapered arrangement of Figure 1, the linermaybe further driven in to complete the sizing operation or, in the form of- Figure 2, the shrinking or other operation necessary to compress the liner to proper size may be carried out.
Heretofore an accurate mating between a plunger and barrel in a packingless pump, that is to say, in which the main sealing effect is obtained by the nicety of fit between a plunger and barrel of relatively hard materials rather than by soft and easily compressible materials, has proved a very serious problem. General practice has involved hand lapping operations to extreme accuracies which has proved both costly and required excessive amounts of time. This is because no way has previously been known to handle these hard materials except by some form of cutting or abrasion. My invention overcomes this difliculty in that even though the materials are hard they do have slight elasticity and I am taking advantage of this slight elasticity to change the size a mirute amount which, however, is sufficient to produce the desired fit.
In forming the pump and in adjusting the relative position of the liner and sleeve to accomplish the final size ofthe bore of the pump,'or to readjust it for Wear after use, it is to be understood that the adjustment ofthe liner and sleeve may be such as to produce first too tight f a t and movement of the parts may, when this occurs, be reversed to permit sufficient expansion on the part of the liner to produce the proper size of bore. The pump barrel as an article of manufacture is claimed in my co-pending application, Serial No. 110,484, filed November 12, 1936. The method of making and assembling the pump .barrel and associated parts.is. claimed herewith.
I claim:
1. The method of sizing a liner in a multi-part pump barrel, which includes the steps of forming a hollow liner with tapered exterior, forming a hollow sleeve with correspondingly tapered interior, forcing the two together axially and thereby decreasing the internal size of the liner to the desired final size.
2. The method of sizing a liner in a multi-part pump barrel, which includes the steps of forming a hollow liner with tapered exterior, leaving the interior size thereof 'greater than' that nally necessary, forming a hollow sleeve with correspondingly tapered interior, forcing the two together axially and vthereby substantially uniformly decreasing the internal size of the liner to the desired final substantially uniform size.
3. The methodof sizing a liner in a multi-part p ump barrel and guiding assembly which includes the following steps: making a hollow liner, forming through said liner a round, straight hole to a slightly variable, over-sized diameter, making a cooperating compression member, placing said compression member about said liner, moving the compression member with respect to the said liner, and thereby compressing the liner and reducing by said compression the outside diameter of the liner to a minute amount and, also, thereby reducing the diameter of the bore of said liner uniformly, and holding the stresses set up within both the liner and the compression member well within the elastic limits of the materials, and maintaining the inner walls of the liner bore straight during such compressive step.
4. The method of making and sizing a liner in a multi-part pump barrel assembly which includes the steps of making a liner, boring a round, straight hole axially through said liner, making and placing about said liner a co-operating compression member, moving the compression .member axially with respect to said liner and thereby exerting compression upon said liner and decreasing the internal diameter of the liner.
5. The method of making and of sizing a liner in a multi-part pump barrel assembly which includes the following steps: lmaking a liner, making a round, straight-sided, slightly over-sized hole from end to end of said liner, making a compression member, placing said compression member about said liner in contact therewith, moving thecompression member with respect to said liner and exerting as a result of such movement I a uniform compression upon said liner and thereby reducing uniformly the internal dimension of the liner, and simultaneously maintaining the inner walls of the liner straight.
6. The method of sizing the bore of a liner in a multi-part pump barrel assembly, having a liner, a jacket therefor, and a plunger return, and adapted to be reciprocated therein, which method includes the following steps: machining a bore in the liner to be slightly over-'size with respect to the said plunger, machining a tapered exterior wall on the liner, machining a mating tapered interior wall on the jacket, forcing the jacket and the liner together'by relative longitudinal movement along the axis of the tapers, and compressing the liner by means of the jacket uniformly along radial lines, and reducing the radial dimensions of the liner uniformly, and continuing the said movement until a predetermined running fit between bore and plunger is reached.
PHILIP LANE SCO'I'I.
US110485A 1936-11-12 1936-11-12 Fuel pump assembly Expired - Lifetime US2180883A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US110485A US2180883A (en) 1936-11-12 1936-11-12 Fuel pump assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US110485A US2180883A (en) 1936-11-12 1936-11-12 Fuel pump assembly

Publications (1)

Publication Number Publication Date
US2180883A true US2180883A (en) 1939-11-21

Family

ID=22333267

Family Applications (1)

Application Number Title Priority Date Filing Date
US110485A Expired - Lifetime US2180883A (en) 1936-11-12 1936-11-12 Fuel pump assembly

Country Status (1)

Country Link
US (1) US2180883A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415324A (en) * 1944-09-02 1947-02-04 Thompson Grinder Co Method of rejournalling spindle shafts
US2480043A (en) * 1945-05-05 1949-08-23 Trico Products Corp Method of journaling a shaft in a bushing
US2483765A (en) * 1946-08-06 1949-10-04 Donat H Hamel Watch repairing method
US2612417A (en) * 1949-10-11 1952-09-30 Hansen Mfg Co Bearing unit structure
US2983663A (en) * 1959-02-10 1961-05-09 Charles H Bassett Fuel element for nuclear reactors
US2992179A (en) * 1959-03-17 1961-07-11 Charles H Bassett Fuel element for nuclear reactors
US3176378A (en) * 1962-04-09 1965-04-06 Janiszewski Kasimir Method of making a bushing socket in a platen
US4793043A (en) * 1987-07-07 1988-12-27 Cummins Engine Company, Inc. Fuel pump distribution assembly salvage method
US20040091377A1 (en) * 2002-11-08 2004-05-13 Mitsubishi Denki Kabushiki Kaisha High-pressure fuel pump

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415324A (en) * 1944-09-02 1947-02-04 Thompson Grinder Co Method of rejournalling spindle shafts
US2480043A (en) * 1945-05-05 1949-08-23 Trico Products Corp Method of journaling a shaft in a bushing
US2483765A (en) * 1946-08-06 1949-10-04 Donat H Hamel Watch repairing method
US2612417A (en) * 1949-10-11 1952-09-30 Hansen Mfg Co Bearing unit structure
US2983663A (en) * 1959-02-10 1961-05-09 Charles H Bassett Fuel element for nuclear reactors
US2992179A (en) * 1959-03-17 1961-07-11 Charles H Bassett Fuel element for nuclear reactors
US3176378A (en) * 1962-04-09 1965-04-06 Janiszewski Kasimir Method of making a bushing socket in a platen
US4793043A (en) * 1987-07-07 1988-12-27 Cummins Engine Company, Inc. Fuel pump distribution assembly salvage method
US20040091377A1 (en) * 2002-11-08 2004-05-13 Mitsubishi Denki Kabushiki Kaisha High-pressure fuel pump
US7024980B2 (en) * 2002-11-08 2006-04-11 Mitshbishi Denki Kabushiki Kaisha High-pressure fuel pump

Similar Documents

Publication Publication Date Title
US2180883A (en) Fuel pump assembly
US2443312A (en) Pressure cylinder
US5507093A (en) Forged-steel connecting rod
CA1088283A (en) Piston with flared pin bore and method of making
CA2230745A1 (en) Method for improving fatigue strength due to repeated pressure at branch hole part in member for high pressure fluid, branch hole part of member for high pressure fluid formed by the method, and member for high pressure fluid with built-in slider having the branch hole
US4057992A (en) Mandrel for cold drawing and/or sizing tubes
US2372694A (en) High-pressure fluid pump
US3550491A (en) Punch and die assembly
US2478818A (en) Method of manufacturing pressure cylinders
US3073372A (en) Apparatus for cold bending of tubular bodies and the like
US2460948A (en) Pump piston
US2187661A (en) Valve tappet
US3902405A (en) Ringless piston
US4370788A (en) Method of lining cylindrical bores
US2003438A (en) Tool for making cartridge shells
US2175705A (en) Pump liner construction
US3009237A (en) Piston blanks
US2465046A (en) High-pressure fluid pump
US2683638A (en) Liner for compressors
US1646371A (en) Bearing and method of making same
US2458202A (en) Apparatus for forming composite bearings
US3621534A (en) Tool set assembly for powder compacting press and the like
US3139670A (en) Process for making a dashpot assembly
US3906566A (en) Pneumatic biasing system for a screw blank cold heading machine
US2358271A (en) Cylinder and piston and method of producing a working seal therebetween