Dispensing – With heating or cooling means – Cooling only
Patent
1976-01-29
1977-07-05
Tollberg, Stanley H.
Dispensing
With heating or cooling means
Cooling only
222391, B67D 562
Patent
active
040334848
ABSTRACT:
A hot melt adhesive gun employing a cartridge of thermoplastic adhesive contained within a chamber made of a thermally insulative non-stick material. A plunger is driven into engagement with the cartridge by a manually operative trigger actuated infinite resolution ratchet to urge the cartridge into melting contact with an electrical heater block and to provide pressure for driving the melting adhesive into a storage reservoir and out through a valved nozzle for application to a bonding surface. A partially melted portion of the cartridge deforms under the applied pressure of the plunger to form a seal against backflow of molten adhesive. Upon release of the trigger, a retraction mechanism causes the plunger to retract a predetermined amount to disengage the cartridge thereby allowing closure of the nozzle valve and arresting of adhesive flow.
REFERENCES:
patent: 2732102 (1956-01-01), Ekins
patent: 3877610 (1975-04-01), Dickey
Ornsteen Chemicals, Inc.
Tollberg Stanley H.
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