US3228422A - Control valve mechanism for pneumatically operable devices, especially for driving nails and staples - Google Patents

Control valve mechanism for pneumatically operable devices, especially for driving nails and staples Download PDF

Info

Publication number
US3228422A
US3228422A US229963A US22996362A US3228422A US 3228422 A US3228422 A US 3228422A US 229963 A US229963 A US 229963A US 22996362 A US22996362 A US 22996362A US 3228422 A US3228422 A US 3228422A
Authority
US
United States
Prior art keywords
inlet
cavity
communication
port
plunger
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
US229963A
Other languages
English (en)
Inventor
Bade Heinz Emil
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.)
Joh Friedrich Behrens AG
Original Assignee
Joh Friedrich Behrens AG
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 Joh Friedrich Behrens AG filed Critical Joh Friedrich Behrens AG
Application granted granted Critical
Publication of US3228422A publication Critical patent/US3228422A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/04—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure
    • B25C1/041—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure with fixed main cylinder
    • B25C1/043—Trigger valve and trigger mechanism
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86582—Pilot-actuated

Definitions

  • the present invention relates to a control valve mechanism for pneumatically operable devices, especially nail driving devices and staplers.
  • FIGURE 1 illustrates by way of example a longitudinal section through a stapler equipped with a control valve mechanism according to the present invention.
  • FIGURE 2 illustrates a vertical section through a control valve mechanism according to the present invention on a larger scale than that of FIGURE 1, the valve mechanism of FIGURE 2 being shown in closed position.
  • FIGURE 2a illustrates the valve mechanism of FIG- URE 2 in opened position.
  • FIGURE 3 is a section along the line IIIIII of FIG- URE 2.
  • FIGURE 4 is a section along the line IVIV of FIG- URE 2.
  • the control valve mechanism which comprises a main valve and a servovalve for controlling the operation of said main valve, is characterized primarily in that said main valve has two different oppositely effective areas rigidly connected to each other and adapted to be subjected to pneumatic pressure for respectively moving said main valve member into opened and closed position.
  • FIG. 1 illustrates the control valve mechanism according to the present invention, generally designated V, in connection with a stapler.
  • the stapler illustrated in FIG. 1 comprises a handle section 1, a main body 1a and a nose section 1c with a staple feeding magazine M.
  • a pneumatically operable piston P with a staple driver D Reciprocably mounted in the main body In is a pneumatically operable piston P with a staple driver D.
  • the handle section 1 includes a large air chamber 2 and a conventional connection as, for instance, nipple N for connection with a suitable supply of air under pressure, for instance air of 5 atmospheres above atmospheric pressure.
  • the air for actuating the piston P in either direction is supplied from the air chamber 2 through a passage 3 while the valve mechanism V interposed between chamber 2 and passage 3 is operable to control air communication between the chamber 2 and the passage 3.
  • main body 1a with the parts pertaining thereto does not form a part of the present invention and may vary in construction in conformity with the respective requirements, no further description of the main body 1a, nose body 1c and magazine M appears to be necessary.
  • the lower portion of the handle section 1 is provided with a threaded bore 6 having threaded thereinto a bushing 5.
  • This bushing 5 holds cylindrical sleeve 8 in a bore 10 of the handle section 1 by means of a plate 7 and a plate 9 resting, through the intervention of a gasket G, against a surface 11 of the handle section 1.
  • Reciprocably mounted in a bore 51 bushing 5 is a pin 52 adapted to be actuated by a trigger 120.
  • the trigger 126 is normally held in its FIG. 1 position by means of a spring 119.
  • Pin 52 has a flat portion 54.
  • the upper portion of pin 52 has a neck portion 52a around which pin 52 carries a sealing ring 53 by means of which normally, i.e. in FIG. 2 position of pin 52, the portions 54 is tightly sealed.
  • the said portion 54 communicates with the bore 12a of a sleeve 12 which extends through a wide opening 71 of plate 7 while the lower mouth of bore 12a faces a cone 56 forming a part of pin 52.
  • the lower end of sleeve 12 has a head 121 with a cutout or recess 122 through which a recess 5a in bushing 5 communicates with the opening 71. Head 121 rests with radial and axial play on the shoulder 55 of the bushing 5. Normally, i.e.
  • a shank 13 Longitudinally displaceably mounted on sleeve 12 is a shank 13 carrying a piston 14 which is displaceable in cylinder 10.
  • Piston 14 carries a sealing ring 141.
  • the profiled shank 13 has a fiat portion which leaves free a passage 111 in plate 11.
  • shank 13 is provided with two sealing rings the upper one 131 of which is adapted tightly to close an opening 21, which latter communicates with chamber 2, whereas the lower ring 132 is adapted tightly to close the passage 111.
  • the upper portion of cylinder sleeve 8 has a reduced outer diameter so that this reduced diameter section together with the housing of the handle section 1 confines an annular chamber 101.
  • This annular chamber 101 communicates with the cylinder chamber 8a through a number of openings 81 and also communicates through said openings 81 with an exhaust passage 4 leading into the atmosphere.
  • Shank 13 and piston 14 form the main valve, and pin 52 forms the servo-valve for the control valve V.
  • the main valve opens immediately in response to the initiation of the lifting movement of the trigger 120.
  • the function of said main valve 13, 131 is thus independent of the trigger stroke and the manner of operation of the trigger by the operator.
  • the said main valve actually responds already to a very small movement of the servovalve 52.
  • the opening 21 which in the open position of the main valve is completely free as to its entire cross section, makes it possible that the compressed air in chamber 2 can immediately pass into passage 3 without encountering any handicap and then pass from passage 3 to the piston P to be actuated. This greatly accelerates the control and driving operation of the device.
  • a further acceleration of the control and driving operation will be obtained if the axis of the valve arrangement were changed so as to coincide with the dot-dash axis x, for instance at an angle of 45 with regard to the driving cylinder in which the piston P is reciprocable, because in this way a flow path would be created which would require a minimum of deviation of the air passing from chamber 2 to passage 3. If also the upper wall or the back of the handle section 1 were given a corresponding inclination, a device would be obtained which would facilitate the handling of the apparatus during the operation thereof.
  • the entire control valve mechanism consists of relatively few elements and has only one sealing element subjected to wear by movement namely the piston ring 141 for which a so-called O-ring may be selected.
  • the control valve mechanism is therefore relatively non-sensitive against admixtures to the compressed air, such as condensing water or soiling which with ordinary control valve mechanisms may easily bring about leakages.
  • valve shank 13 is guided on sleeve 12 without compressing force because sleeve 12 with its head 121 is journalled between bushing 5 and plate 7 with play in radial as well as in axial direction.
  • the remaining sealing elements namely rings 131, 132 and 56 will stationarily seal and block reliably also when even after a longer time of operation minor deformations occur.
  • the control member may with all parts pertaining thereto be inserted into the handle section 1 from below through bore 6. In this way, the back of the handle section above the control member will remain completely free of protruding parts which could interfere with a smooth and comfortable grasp on the apparatus by hand which other wise could injure the hand of the operator.
  • a control valve mechanism which comprises: a housing having a cylinder formed therein, said cylinder having compressed air inlet means and exhaust air outlet means and a port to be connected alternately to said inlet and outlet means, plunger means reciprocable in said cylinder for controlling the communication between said port and said inlet and outlet means, said plunger means being provided with two oppositely effective and rigidly interconnected different size areas, the smaller of said areas being in continuous communication with said inlet means and the larger of said areas being adapted to al ternately communicate with the atmosphere and to said inlet means so as to move said plunger means from a first position into a second position and vice versa to respectively establish and interrupt communication between said inlet means and said port while simultaneously respectively interrupting and establishing communication between said port and said outlet means, and a single manually operable valve member associated with said plunger means and normally in a first position to effect communication between said larger area and said inlet means while interrupting communication of said larger area with the atmosphere and also movable into a second position for interrupting communication of said larger area with said inlet
  • a control valve mechanism which comprises: a housing having a cylinder formed therein, said cylinder having compressed air inlet means and exhaust air outlet means and a port for alternate communication with said inlet and outlet means, plunger means reciprocable in said cylinder for controlling the communication between said port and said inlet and outlet means, said plunger means being provided with two oppositely effective and rigidly interconnected different size areas on the opposite ends thereof, the smaller of said areas being in continuous communication with said inlet means and the larger of said areas being adapted to alternately communicate with said outlet means and said inlet means so as to move said plunger means from a first position into a second position and vice versa to respectively establish and interrupt communication between said inlet means and said port while simultaneously respectively interrupting and establishing communication between said port and said outlet means, said plunger means being provided with an axial bore therethrough leading from one of said areas to the other, sleeve means substantially stationary in said housing and extending slidably through said plunger means and open at both ends, and a manually operable valve member movable selectively into one
  • a control valve mechanism in which the cylinder formed in the housing comprises chamber means in the housing, a sleeve member in the chamber means and end members in the chamber at opposite ends of said sleeve member, the end of said plunger means forming the larger of said areas being reciprocable in said sleeve member, nut means threaded in the housing and holding said sleeve member and end members in said chamber means and having a bore receiving and guiding said valve member, and passage means formed by said valve member and bore leading to the atmosphere and controlled by said valve member and forming the means for connecting said larger area to the atmosphere.
  • a control valve mechanism in which said sleeve means is provided with a head at the said one end thereof adjacent said valve member, said head being confined with axial and radial play between said nut means and the said and member adjacent thereto.
  • a control valve mechanism which comprises: a housing having a cylinder formed therein, said cylinder having compressed air inlet means and exhaust air outlet means and a port for alternate communication with said inlet and outlet means, plunger means reciprocable in said cylinder for controlling the communication between said port and said inlet and outlet means, said plunger means being provided with two oppositely elfective and rigidly interconnected diiferent size areas at its opposite ends, the smaller of said areas being in continuous communication with said inlet means and the larger of said areas being adapted to selectively communicate with the atmosphere and to said inlet means so as to move said plunger means from a first position into a second position and vice versa to respectively establish and interrupt communication between said inlet means and said port while simultaneously respectively interrupting and establishing communication between said port and said outlet means, and a manually operable servo-valve member arranged in substantially axial alignment with said plunger means comprising a substantially stationary sleeve element extending slidably through said plunger means and having one end open to said inlet means and its other end
  • a housing having a cavity therein open at one end, an air inlet port at one end of the cavity, an air outlet port in the cavity spaced from said inlet port, a feed port in the cavity between said inlet and outlet ports, a first shoulder in the cavity between said inlet port and feed port and facing the open end of the cavity, a second and longer shoulder in the cavity between said feed port and outlet port facing the open end of this cavity, a ring in the cavity resting on said second shoulder, a valve plunger having a shank passing through said ring with clearance and having a head adapted in a first position to sealingly engage said first shoulder and in a second position to sealingly engage said ring, a sleeve in the cavity resting against said ring and having aperture means communicating with said outlet port, a piston portion on the plunger in said cylinder between said aperture means and the open end of said cavity and larger than said head, a bore through said plunger connecting the one side of said head toward said inlet port with the one side of said
  • a housing having a cavity therein open at one end, an air inlet port at one end of the cavity, an air outlet port in the cavity spaced from said inlet port, a feed port in the cavity between said inlet and outlet ports, a first shoulder in the cavity between said inlet port and feed port and facing the open end of the cavity, a second and longer shoulder in the cavity between said feed port and outlet port facing the open end of this cavity, a ring in the cavity resting on said second shoulder, a valve plunger having a shank passing through said ring with clearance and having a head adapted in a first position to sealingly engage said first shoulder and in a second position to sealingly engage said ring, a sleeve in the cavity resting against said ring and having aperture means communicating with said outlet port, a piston portion on the plunger in said cylinder between said aperture means and the open end of said cavity and larger than said head, a bore through said plunger connecting the one side of said head toward said inlet port with the one side of said
  • a housing having a cavity therein open at one end, an air inlet port at one end of the cavity, an air outlet port in the cavity spaced from said inlet port, a feed port in the cavity between said inlet and outlet ports, a first shoulder in the cavity between said inlet port and feed port and facing the open end of the cavity, a second and longer shoulder in the cavity between said feed port and outlet port facing the open end of this cavity, a ring in the cavity resting on said second shoulder, a valve plunger having a shank passing through said ring with clearance and having a head adapted in a first position to sealingly engage said first shoulder and in a second position to sealingly engage said ring, a sleeve in the cavity resting against said ring and having aperture means communicating with said outlet port, a piston portion on the plunger in said cylinder between said aperture means and the open end of said cavity and larger than said head, a bore through said plunger connecting the one side of said head toward said inlet port with the one side of said
  • a housing having a cavity therein open at one end, an air inlet port at one end of the cavity, an air outlet port in the cavity spaced from said inlet port, a feed port in the cavity between said inlet'and outlet ports, a first shoulder in the cavity between said inlet port and feed port and facing the open end of the cavity, a second and longer shoulder in the cavity between said feed port and outlet port facing the open end of this cavity, a ring in the cavity resting on said second shoulder, a valve plunger having a shank passing t-hrough said ring with clearance and having a head adapted in a first position to sealingly engage said first shoulder and in a second position to sealingly engage said ring, a sleeve'in the cavity resting against said ring and having aperture means communicating with said outlet port, a piston portion on the plunger in said cylinder between said aperture means and the open end of said cavity and larger than said head, a bore through said plunger connecting the one side of said head toward said inlet port

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Lift Valve (AREA)
  • Fluid-Driven Valves (AREA)
  • Fluid-Pressure Circuits (AREA)
US229963A 1961-12-06 1962-10-11 Control valve mechanism for pneumatically operable devices, especially for driving nails and staples Expired - Lifetime US3228422A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB0065055 1961-12-06

Publications (1)

Publication Number Publication Date
US3228422A true US3228422A (en) 1966-01-11

Family

ID=6974621

Family Applications (1)

Application Number Title Priority Date Filing Date
US229963A Expired - Lifetime US3228422A (en) 1961-12-06 1962-10-11 Control valve mechanism for pneumatically operable devices, especially for driving nails and staples

Country Status (2)

Country Link
US (1) US3228422A (de)
DE (1) DE1478805B2 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3340897A (en) * 1965-05-07 1967-09-12 Ohio Brass Co Fluid control mechanism
US3554233A (en) * 1968-09-20 1971-01-12 Jurgen Korth Control valve assembly for a pneumatically operated fastener device
US4066101A (en) * 1974-06-28 1978-01-03 Fries Jan Richard De Multiple way valve
US4274290A (en) * 1978-10-30 1981-06-23 Mts Systems Corporation Rapid opening, high flow control valve for hydraulic actuator
WO2016178587A1 (en) * 2015-05-05 2016-11-10 S-Gun Limited A pneumatic or hydraulic mechanism
US20170361443A1 (en) * 2016-06-20 2017-12-21 Black & Decker Inc. Cylindrical Integrated Valve Assembly
US10888981B2 (en) 2012-05-31 2021-01-12 Black & Decker Inc. Power tool having latched pusher assembly
US11229995B2 (en) 2012-05-31 2022-01-25 Black Decker Inc. Fastening tool nail stop
US12502756B2 (en) 2013-10-09 2025-12-23 Black & Decker Inc. High inertia driver system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2641279A (en) * 1948-06-10 1953-06-09 Weston Hydraulies Ltd Control valve for hydraulic actuating cylinders
US2898936A (en) * 1957-04-17 1959-08-11 Int Basic Economy Corp Pilot actuated fluid control valve
US2913005A (en) * 1956-07-23 1959-11-17 Hughes Tool Co Pilot-actuated control valve
US2965132A (en) * 1958-08-08 1960-12-20 Dole Valve Co Pneumatic control valve
US3002532A (en) * 1959-08-31 1961-10-03 Carl M Carlson Solenoid actuated valve
US3084672A (en) * 1960-05-16 1963-04-09 Signode Steel Strapping Co Pneumatic stapling tool

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2641279A (en) * 1948-06-10 1953-06-09 Weston Hydraulies Ltd Control valve for hydraulic actuating cylinders
US2913005A (en) * 1956-07-23 1959-11-17 Hughes Tool Co Pilot-actuated control valve
US2898936A (en) * 1957-04-17 1959-08-11 Int Basic Economy Corp Pilot actuated fluid control valve
US2965132A (en) * 1958-08-08 1960-12-20 Dole Valve Co Pneumatic control valve
US3002532A (en) * 1959-08-31 1961-10-03 Carl M Carlson Solenoid actuated valve
US3084672A (en) * 1960-05-16 1963-04-09 Signode Steel Strapping Co Pneumatic stapling tool

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3340897A (en) * 1965-05-07 1967-09-12 Ohio Brass Co Fluid control mechanism
US3554233A (en) * 1968-09-20 1971-01-12 Jurgen Korth Control valve assembly for a pneumatically operated fastener device
US4066101A (en) * 1974-06-28 1978-01-03 Fries Jan Richard De Multiple way valve
US4274290A (en) * 1978-10-30 1981-06-23 Mts Systems Corporation Rapid opening, high flow control valve for hydraulic actuator
US10888981B2 (en) 2012-05-31 2021-01-12 Black & Decker Inc. Power tool having latched pusher assembly
US11179836B2 (en) 2012-05-31 2021-11-23 Black & Decker Inc. Power tool having latched pusher assembly
US11229995B2 (en) 2012-05-31 2022-01-25 Black Decker Inc. Fastening tool nail stop
US12151348B2 (en) 2012-05-31 2024-11-26 Black & Decker Inc. Power tool having latched pusher assembly
US12208497B2 (en) 2012-05-31 2025-01-28 Black & Decker Inc. Power tool having latched pusher assembly
US12502756B2 (en) 2013-10-09 2025-12-23 Black & Decker Inc. High inertia driver system
WO2016178587A1 (en) * 2015-05-05 2016-11-10 S-Gun Limited A pneumatic or hydraulic mechanism
US20170361443A1 (en) * 2016-06-20 2017-12-21 Black & Decker Inc. Cylindrical Integrated Valve Assembly
US12544893B2 (en) 2016-06-20 2026-02-10 Black & Decker Inc. Feed piston pressure tube

Also Published As

Publication number Publication date
DE1478805A1 (de) 1969-03-06
DE1478805B2 (de) 1970-09-10

Similar Documents

Publication Publication Date Title
US3427928A (en) Compressed air-operated drive-in apparatus to drive-in fasteners
US3572572A (en) Fluid pressure operated fastener driving device
US3278104A (en) Fastener applying device
US3278103A (en) Fastener applying device
US3583496A (en) Compressed air-operated drive-in apparatus to drive-in fastening means such as nails, staples or the like
US5370037A (en) Control valve means
US3228422A (en) Control valve mechanism for pneumatically operable devices, especially for driving nails and staples
US2113161A (en) Riveting apparatus
GB1080657A (en) Improvements in or relating to pneumatically operated percussion driving tools
GB1357748A (en) Fastener driving tool
GB979710A (en) Fastener driving apparatus
US3713573A (en) Safety device on a compressed air operated drive in apparatus to drive in fasteners
US3087162A (en) Pneumatic gun for corrugated nails and the like
GB1226837A (de)
US3051135A (en) Pneumatic tool
US2954009A (en) Remote control air valve
US3084672A (en) Pneumatic stapling tool
GB1093739A (en) Pneumatic actuated fastener driving apparatus
GB1070051A (en) Pneumatic percussion machine
GB1393824A (en) Stapler release safety mechanism
US3405602A (en) Fluid motor having a supply-and-exhaust valve carried by the piston
GB1145232A (en) Pneumatic fastener applying device
US3547003A (en) Fastener driving tool
GB1357749A (en) Fastener driving tool
GB1020196A (en) Improvements relating to a method of operating and construction of pneumatically operated stapling, nailing, or like apparatus