Viscous Material Dispenser
First Claim
1. A material dispensing apparatus, comprising:
- an elongate frame adapted to retain a removable material container, said frame defining a forward end and a rearward end;
a handle attached to the body;
a first trigger hingedly connected to the handle;
an elongate plunger slidably connected in the body;
a first dog actuated by said trigger to engage said plunger and to drive it longitudinally relative to said tube of viscous material in a first direction;
a second dog which in a first position engages said plunger to prevent said plunger from moving longitudinally relative to said material container in a second direction that is opposite said first direction, and which in a second position releases said plunger to allow said plunder to move in said second direction, said second dog operationally located forward of said trigger.
1 Assignment
0 Petitions
Accused Products
Abstract
A material dispenser for receiving a material container and for dispensing material from the container is disclosed. The material dispenser includes a frame having a body, depending handle and an elongate cradle that extend forward from the body for retaining a material container. The material dispenser includes a trigger actuated plunger mechanism that is operative to push a piston in the material container to dispense material from the container. The material container is held in the material dispenser by a rear receptacle, a distal receptacle and is supported by the cradle. The dispenser includes a no-drool actuator lever that is operatively positioned forward of the trigger so that the operator may activate the actuator lever with the same hand that is being used to hold the dispenser. When the actuator lever is activated it relieves pressure on the plunger to thereby stop material from oozing unintentionally from the container.
32 Citations
16 Claims
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1. A material dispensing apparatus, comprising:
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an elongate frame adapted to retain a removable material container, said frame defining a forward end and a rearward end; a handle attached to the body; a first trigger hingedly connected to the handle; an elongate plunger slidably connected in the body; a first dog actuated by said trigger to engage said plunger and to drive it longitudinally relative to said tube of viscous material in a first direction; a second dog which in a first position engages said plunger to prevent said plunger from moving longitudinally relative to said material container in a second direction that is opposite said first direction, and which in a second position releases said plunger to allow said plunder to move in said second direction, said second dog operationally located forward of said trigger. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A material dispenser, comprising:
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an elongate body adapted to retain a removable tube of viscous material between a first receptacle at a forward end of the body and a second receptacle at a rearward end of the body; a first trigger operatively connected to an elongate plunger slidably held in the body so that operation of the trigger moves the plunger longitudinally relative to the body; plunger engagement means for moving said plunger in a first direction when said trigger is operated; and plunger disengagement means located forward of said trigger and for selectively engaging said plunger to prevent movement of said plunger in the direction axially opposite said first direction and for disengaging said plunger to permit movement of said plunger in the direction axially opposite said first direction. - View Dependent Claims (10, 11, 12, 13)
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14. In an apparatus for dispensing viscous material of the type having an elongate body adapted to retain a removable tube of the viscous material, a handle attached to the body and a trigger pivotally connected thereto so that operation of the trigger moves an elongate plunger slidably held in the body and operatively connected to the trigger longitudinally forward relative to the body to expel the viscous material, and operation of the trigger away from the handle urges the plunger longitudinally rearward relative to the body, the improvement comprising:
a dog movable between a first position in which said dog prevents said plunger from moving longitudinally rearward relative to the body when the trigger is moved away from said handle, and a second position in which said plunger is movable in said rearward direction when the trigger is moved away from said handle, said dog actuated from a position forward of said trigger. - View Dependent Claims (15, 16)
Specification