(19)
(11) EP 1 018 375 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
21.05.2003 Bulletin 2003/21

(43) Date of publication A2:
12.07.2000 Bulletin 2000/28

(21) Application number: 99310590.7

(22) Date of filing: 24.12.1999
(51) International Patent Classification (IPC)7: B05C 17/01
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 06.01.1999 US 114936 P

(71) Applicant: Tah Industries, Inc.
Robbinsville, NJ 08691 (US)

(72) Inventor:
  • Gruendeman, Peter
    Allentown, New Jersey 08501 (US)

(74) Representative: Watts, Peter Graham 
Anthony Cundy & Co. 1 Olton Bridge, 245 Warwick Road
Solihull B92 9AH
Solihull B92 9AH (GB)

   


(54) Manual viscous liquid dispensing device


(57) A dispenser (10) for manually dispensing pasty, semi-fluid products that must be applied with control and accuracy incorporates a unique integral trigger (22) and pawl (24) drive mechanism (20), in which the drive (20) is activated by a trigger (22) or actuator. A product dispensing cartridge is attached to the front of the dispenser (10) via a cartridge holding mechanism. As the trigger (22) is depressed, the pawl drive mechanism (20) engages and advances a plunger (40) into the product container, contacting and advancing a piston within the cartridge which in turn advances and expels product from a cartridge dispensing outlet. At the completion of the stroke, the trigger (22) is released and the drive mechanism (20) disengages the plunger (40), the disengagement interaction between the drive mechanism (20) and the plunger (40) causing the latter to move rearwards. A floating gripper (52), disposed on the plunger, limits the amount of this rearward movement, the effect of which is to decompress the product cartridge and thus prevent drooling after the completion of dispensation.






Search report