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1. WO1996002819 - ADJUSTABLE CONSTANT PRESSURE CAULK GUN

Publication Number WO/1996/002819
Publication Date 01.02.1996
International Application No. PCT/US1995/008298
International Filing Date 30.06.1995
Chapter 2 Demand Filed 15.02.1996
IPC
B05B 12/08 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
12Arrangements for controlling delivery; Arrangements for controlling the spray area
08responsive to condition of liquid or other fluent material discharged, of ambient medium or of target
B05C 17/01 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
CAPPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
17Hand tools or apparatus using hand-held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
005for discharging material through an outlet orifice by pressure
01with mechanically or electrically actuated piston or the like
CPC
B05B 12/085
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
12Arrangements for controlling delivery; Arrangements for controlling the spray area
08responsive to condition of liquid or other fluent material ; to be; discharged, of ambient medium or of target ; ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
085responsive to flow or pressure of liquid or other fluent material to be discharged
B05C 17/0103
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
CAPPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
17Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
005for discharging material ; from a reservoir or container located in or on the hand tool; through an outlet orifice by pressure ; without using surface contacting members like pads or brushes
01with ; manually; mechanically or electrically actuated piston or the like
0103with electrically actuated piston or the like
Y10T 74/18664
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
74Machine element or mechanism
18Mechanical movements
18568Reciprocating or oscillating to or from alternating rotary
18576including screw and nut
18664Shaft moves through rotary drive means
Applicants
  • WAGNER SPRAY TECH CORPORATION [US/US]; 1770 Fernbrook Lane Minneapolis, MN 55447, US
Inventors
  • MOTZKO, Andrew, R.; US
Agents
  • LINDER, Walter, C.; Faegre & Benson 2200 Norwest Center 90 South Seventh Street Minneapolis, MN 55402-3901 , US
Priority Data
08/275,37818.07.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ADJUSTABLE CONSTANT PRESSURE CAULK GUN
(FR) PISTOLET DISTRIBUTEUR DE PRODUITS D'ETANCHEMENT A PRESSION CONSTANTE REGLABLE
Abstract
(EN)
An adjustable, battery-powered, constant pressure gun (10) for dispensing viscous materials such as caulk and adhesive. The gun (10) includes a housing (12) having a handle (14), an operator-actuated trigger (40), and a battery compartment with power supply terminals (32). A motor (26) mounted within the housing drives (12) a dispensing mechanism (24). The flow of current through the motor (26) is controlled by an electronic switch (70). A current-to-voltage converter (72) including a low-pass filter (88, 90) is coupled to the motor (26) and provides a feedback pressure signal representative of the actual dispensing pressure as a function of the current drawn by the motor (26). A set-point voltage signal representative of a desired dispensing pressure is provided by an operator-adjustable pressure control (36). A hysteresis comparator (74) connected to the electronic switch (70) compares the feedback pressure signal to the set-point signal, and controls the switch as a function of the comparison to maintain the actual dispensing pressure within a predetermined operating band of the desired dispensing pressure when the trigger (40) is actuated.
(FR)
Pistolet (10) à piles pour la distribution à pression constante réglable de matériaux visqueux tels que des produits d'étanchement ou des adhésifs, le corps (12) du pistolet comportant une crosse (14), une gâchette (40) actionnée par l'utilisateur, un logement pour les piles et leurs bornes (32) de raccordement, un moteur (26) actionnant le mécanisme de distribution (24), également placé dans le corps du pistolet et un commutateur électronique (70) réglant l'intensité du courant dans le moteur (26). Un convertisseur courant/tension (72) à filtre passe-bas (88, 90) raccordé au moteur (26) fournit un signal de pression de retour représentatif de la pression de distribution effective qui est elle-même fonction du courant consommé par le moteur (26). Un signal de tension de réglage de la valeur de consigne correspondant à la pression de distribution désirée est fourni par une commande de pression (36) actionnée par l'utilisateur. Un comparateur d'hystérèse (74) relié au commutateur électronique (70) compare le signal de pression de retour au signal de valeur de consigne et commande le commutateur (70) en fonction de la comparaison, de façon à maintenir la pression de distribution effective à l'intérieur de limites prédéterminées lorsque la gâchette (40) est actionnée.
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