IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0514772
(1995-08-14)
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발명자
/ 주소 |
- Timmerman Mark S.
- Walker Terry R.
- Ernst Richard J.
- Downey Daniel L.
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출원인 / 주소 |
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대리인 / 주소 |
Dressler, Rockey, Milnamow & Katz, Ltd.
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인용정보 |
피인용 횟수 :
4 인용 특허 :
0 |
초록
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An adjustable tool is disclosed for dispensing a two-part adhesive from a two-chamber cartridge having a mixing nozzle with each chamber having a plunger. Pistons are insertable into the respective chambers. Piston rods and a drive rod move conjointly with the pistons. A lever is pivotable on the fr
An adjustable tool is disclosed for dispensing a two-part adhesive from a two-chamber cartridge having a mixing nozzle with each chamber having a plunger. Pistons are insertable into the respective chambers. Piston rods and a drive rod move conjointly with the pistons. A lever is pivotable on the frame. A feed nut is mounted loosely on the drive rod so as to be capable of gripping the drive rod when canted for moving the feed nut, the drive rod, the piston rods, and the pistons conjointly to a forward limiting position of the feed nut when the lever is actuated. A spring biases the feed nut backwardly and permits the feed nut to be canted, to grip the drive rod, and to be moved forwardly and conjointly with the drive rod, the piston rods, and the pistons when the lever is pivoted into an actuated position. A set screw threaded adjustably into a threaded hole in the frame defines a backward limiting position of the feed nut. The screw head engages an outer margin of the threaded hole, in a counterbore, to provide an inner limit to threading of the set screw. A cover mounted over the threaded hole has an access hole sized to permit a screwdriver tip of a smaller size but not the screw head to pass and engages the screw head at an inner margin of the access hole so as to provide an outer limit to unthreading of the set screw.
대표청구항
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[ We claim:] [3.] An adjustable tool for dispensing a two-part adhesive from a cartridge having two chambers containing the respective parts of the two-part adhesive, the cartridge having a distal end and a proximal end and having a mixing nozzle mounted to the distal end, each chamber having a plun
[ We claim:] [3.] An adjustable tool for dispensing a two-part adhesive from a cartridge having two chambers containing the respective parts of the two-part adhesive, the cartridge having a distal end and a proximal end and having a mixing nozzle mounted to the distal end, each chamber having a plunger accessible from the proximal end and having a mixing nozzle mounted to the distal end, each chamber having a plunger accessible from the proximal end and displaceable through said chamber, toward the mixing nozzle, so as to force one part of the two-part adhesive into the mixing nozzle, through which the two-part adhesive is ejected, the adjustable tool comprising:(a) a frame adapted to hold such a cartridge;(b) two pistons insertable forwardly into the respective chambers of such a cartridge held by the frame, from the proximal end of the held cartridge, against the plungers of the respective chambers of the held cartridge;(c) two piston rods mounting the respective pistons, mounted movably to the frame, and arranged to move forwardly and backwardly and conjointly with the respective pistons;(d) a drive rod mounted movably to the frame and arranged to move forwardly and backwardly and conjointly with the pistons and the piston rods;(e) a lever mounted to the frame so as to be pivotable between a deactuated position and an actuated position,(f) means including a feed nut mounted loosely on the drive rod so as to be capable of being canted on the drive rod and of gripping the drive rod when canted for moving the feed nut, the drive rod, the piston rods, and the pistons forwardly and conjointly over a displacement from a backward limiting position of the feed nut to a forward limiting position of the feed nut when the lever is pivoted from the deactuated position into the actuated position, the feed nut being movable backwardly from the forward limiting position, along the drive rod, toward the backward limiting position of the feed nut, when not canted so as to grip the drive rod, the forward limiting position corresponding to the actuated position of the lever;(g) means for biasing the feed nut backwardly along the drive rod and for biasing the lever toward the deactuated position, the biasing means permitting the feed nut to be canted on the drive rod, to grip the drive rod, and to be moved forwardly and conjointly with the drive rod, the piston rods, and the pistons when the lever is pivoted from the deactuated position into the actuated position; and(h) means including a stop mounted to the frame for defining the backward limiting position of the feed nut, the stop being adjustable for adjusting the backward limiting position of the feed nut and the displacement of the feed nut, the drive rod, the piston rod, and the piston,wherein the stop is a set screw having a threaded shank threaded into a threaded hole in the frame, the set screw having a screw head enabling the screw to be manually turned via a screwdriver with a tip engaging the screw head,wherein the frame has an outer margin around the threaded hole, the outer margin being arranged to engage the screw head so as to provide an inner limit to threading of the threaded shank into the threaded hole in the frame when the screw head reaches the outer margin, andwherein the means for defining the backward limiting position of the feed nut comprises a cover mounted to the frame so as to cover the counterbore defining the outer margin of the threaded hole in the frame except for an access hole in the cover, the access hole being sized to permit the tip of a screwdriver of a smaller size but not the screw head to pass through the access hole, the cover being arranged to engage the screw head at an inner margin of the access hole so as to provide an outer limit to unthreading of the threaded shank from the threaded hole in the frame.
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