FR2250611A1 - Pneumatic pistol for driving nails etc. - has piston valve with an annular auxiliary pressure chamber - Google Patents

Pneumatic pistol for driving nails etc. - has piston valve with an annular auxiliary pressure chamber

Info

Publication number
FR2250611A1
FR2250611A1 FR7437239A FR7437239A FR2250611A1 FR 2250611 A1 FR2250611 A1 FR 2250611A1 FR 7437239 A FR7437239 A FR 7437239A FR 7437239 A FR7437239 A FR 7437239A FR 2250611 A1 FR2250611 A1 FR 2250611A1
Authority
FR
France
Prior art keywords
valve
pressure chamber
piston valve
auxiliary pressure
annular auxiliary
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.)
Granted
Application number
FR7437239A
Other languages
French (fr)
Other versions
FR2250611B1 (en
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.)
MONACELLI UMBERTO IT
Original Assignee
MONACELLI UMBERTO IT
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 MONACELLI UMBERTO IT filed Critical MONACELLI UMBERTO IT
Publication of FR2250611A1 publication Critical patent/FR2250611A1/en
Application granted granted Critical
Publication of FR2250611B1 publication Critical patent/FR2250611B1/fr
Granted legal-status Critical Current

Links

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

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

The gun has a piston valve (21) aligned above the cylindr (10) and normally maintained in the closed station by reservoir (8) pressure fed to its cylinder remote face; the valve being opened by a temporary interruption of the feed accompanied by a draining of the stored volume of compressed air. The valve features essentially equal surfaces for exposure to compressed air and a mid-portion which, with its external dia. modified and complementary to that of the valve guide cylinder (22), creates an auxiliary valve closure area and pressure. The valve piston has an annular chamber (28) communicating with the end of the guide chamber.
FR7437239A 1973-11-12 1974-11-12 Pneumatic pistol for driving nails etc. - has piston valve with an annular auxiliary pressure chamber Granted FR2250611A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT3122573A IT1001731B (en) 1973-11-12 1973-11-12 PNEUMATIC OPERATED GUN FOR THE INSERTION OF FIS ASSAY ELEMENTS SUCH AS NAILS AND METAL POINTS CI

Publications (2)

Publication Number Publication Date
FR2250611A1 true FR2250611A1 (en) 1975-06-06
FR2250611B1 FR2250611B1 (en) 1978-09-22

Family

ID=11233300

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7437239A Granted FR2250611A1 (en) 1973-11-12 1974-11-12 Pneumatic pistol for driving nails etc. - has piston valve with an annular auxiliary pressure chamber

Country Status (5)

Country Link
CA (1) CA1026902A (en)
DE (1) DE2453595A1 (en)
FR (1) FR2250611A1 (en)
GB (1) GB1454826A (en)
IT (1) IT1001731B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987000776A1 (en) * 1985-08-08 1987-02-12 Renzo Simoni Portable perforating unit
EP0684108A1 (en) * 1994-05-20 1995-11-29 Umberto Monacelli Fastener driving apparatus with improved pneumatic operation

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2601836C3 (en) * 1976-01-20 1982-03-04 Joh. Friedrich Behrens AG, 2070 Ahrensburg Valve arrangement for a pneumatic nailer
DE2718942C3 (en) * 1977-04-28 1980-02-14 Senco Products, Inc., Cincinnati, Ohio (V.St.A.) Release protection on a pneumatic nailer
US4384623A (en) * 1979-10-31 1983-05-24 Panda S.R.L. Pneumatic fastener gun
US4401251A (en) * 1980-11-19 1983-08-30 Signode Corporation Bumperless gun nailer
US4811882A (en) * 1987-10-26 1989-03-14 Sencorp Restrictive trigger actuated valve arrangement for a fastener driving tool
DE3904504A1 (en) * 1988-09-21 1990-03-22 Karl Dipl Ing Petersen Triggering safety device for compressed-air nailers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987000776A1 (en) * 1985-08-08 1987-02-12 Renzo Simoni Portable perforating unit
EP0684108A1 (en) * 1994-05-20 1995-11-29 Umberto Monacelli Fastener driving apparatus with improved pneumatic operation

Also Published As

Publication number Publication date
GB1454826A (en) 1976-11-03
CA1026902A (en) 1978-02-28
DE2453595A1 (en) 1975-05-15
FR2250611B1 (en) 1978-09-22
IT1001731B (en) 1976-04-30

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Legal Events

Date Code Title Description
ST Notification of lapse