CA2108222A1 - Fuel System for Combustion-Powered Fastener-Driving Tool - Google Patents

Fuel System for Combustion-Powered Fastener-Driving Tool

Info

Publication number
CA2108222A1
CA2108222A1 CA2108222A CA2108222A CA2108222A1 CA 2108222 A1 CA2108222 A1 CA 2108222A1 CA 2108222 A CA2108222 A CA 2108222A CA 2108222 A CA2108222 A CA 2108222A CA 2108222 A1 CA2108222 A1 CA 2108222A1
Authority
CA
Canada
Prior art keywords
solenoid
switch
combustion
time interval
fuel
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
CA2108222A
Other languages
French (fr)
Other versions
CA2108222C (en
Inventor
James E. Doherty
Ernest J. Wendling
James W. Robinson
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.)
Illinois Tool Works Inc
Original Assignee
Illinois Tool Works Inc
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 Illinois Tool Works Inc filed Critical Illinois Tool Works Inc
Publication of CA2108222A1 publication Critical patent/CA2108222A1/en
Application granted granted Critical
Publication of CA2108222C publication Critical patent/CA2108222C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure

Abstract

For use in a combustion-powered, fastener-driving tool having a combustion chamber, a source of a combustible fuel, and a switch that must be closed to enable the tool, a fuel system comprises a fuel injector, which includes a normally closed, solenoid-energized valve between the fuel source and the combustion chamber, and an electronic circuit responsive to the switch for energizing the solenoid to open the valve when the switch is closed and for deenergizing the solenoid after a time interval. A resistive-capacitive network defining the time interval includes a first resistor, a second resistor arranged to be selectively connected in parallel therewith, a thermistor connected in parallel therewith, and a variable resistor connected to the parallel resistors. Another network effects a time delay between closure of the switch and energization of the solenoid. Optionally, another network varies the time interval in response to ambient pressure.
CA002108222A 1992-11-13 1993-10-12 Fuel system for combustion-powered fastener-driving tool Expired - Lifetime CA2108222C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US975,835 1992-11-13
US07/975,835 US5263439A (en) 1992-11-13 1992-11-13 Fuel system for combustion-powered, fastener-driving tool

Publications (2)

Publication Number Publication Date
CA2108222A1 true CA2108222A1 (en) 1994-05-14
CA2108222C CA2108222C (en) 1997-02-25

Family

ID=25523461

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002108222A Expired - Lifetime CA2108222C (en) 1992-11-13 1993-10-12 Fuel system for combustion-powered fastener-driving tool

Country Status (8)

Country Link
US (1) US5263439A (en)
EP (1) EP0597241B1 (en)
JP (1) JP2956004B2 (en)
AU (1) AU661927B2 (en)
CA (1) CA2108222C (en)
DE (1) DE69310093T2 (en)
MX (1) MX9306282A (en)
NZ (1) NZ250184A (en)

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Also Published As

Publication number Publication date
AU661927B2 (en) 1995-08-10
DE69310093T2 (en) 1997-10-30
AU5060693A (en) 1994-05-26
CA2108222C (en) 1997-02-25
EP0597241B1 (en) 1997-04-23
US5263439A (en) 1993-11-23
DE69310093D1 (en) 1997-05-28
EP0597241A1 (en) 1994-05-18
JP2956004B2 (en) 1999-10-04
MX9306282A (en) 1994-05-31
NZ250184A (en) 1995-11-27
JPH06206178A (en) 1994-07-26

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Effective date: 20131015