Electric heat sealer with safety device
DCFirst Claim
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1. An electric heat sealer comprising:
- (a) a casing;
(b) a sealing mechanism mounted within said casing, said sealing mechanism including;
(i) a heat insulative base having a top, and(ii) an electric heating wire through which an electrical current can flow;
(c) a frame having an opening defined therethrough;
(d) a heat resistant cover sheet removably secured to said top of said heat insulative base by said frame;
(e) operating means pivotally connected to said casing; and
(f) a safety device which selectively prevents electrical current from flowing through said electric heating wire;
wherein an opening is defined in said casing and said frame includes a downwardly extending post that engages the casing opening.
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Abstract
An electric heat sealer for sealing workpieces such as plastic bags or the like includes a casing defining a battery chamber, a press bar pivotally connected to the casing, a sealing mechanism supported on a compression spring in a spring holder inside the casing, and a safety device. The sealing mechanism is electrically connected to produce heat for sealing the workpiece being put thereon when the press bar pressed against the sealing mechanism. The safety device breaks the electrical circuit when the apparatus is not in use.
40 Citations
18 Claims
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1. An electric heat sealer comprising:
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(a) a casing; (b) a sealing mechanism mounted within said casing, said sealing mechanism including; (i) a heat insulative base having a top, and (ii) an electric heating wire through which an electrical current can flow; (c) a frame having an opening defined therethrough; (d) a heat resistant cover sheet removably secured to said top of said heat insulative base by said frame; (e) operating means pivotally connected to said casing; and (f) a safety device which selectively prevents electrical current from flowing through said electric heating wire; wherein an opening is defined in said casing and said frame includes a downwardly extending post that engages the casing opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An electric heat sealer comprising
a) a housing having first and second opposite ends, said housing including a removable frame having an opening defined therethrough disposed at said first end, wherein said removable frame includes a downwardly extending post that engages an opening defined in said housing; -
b) a heating unit mounted within said housing, said heating unit including a heating element, and at least a portion of said heating unit being aligned with said opening in said frame; c) a source of current; d) a safety switch which selectively prevents electrical current from flowing through said heating element; e) circuitry connecting said heating element, said source of current and said safety switch; and f) a protective frame pivotally connected to said housing on the outside thereof.
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10. An electric heat sealer comprising
a) a housing having first and second opposite ends, said housing including a removable frame having an opening defined therethrough disposed at said first end; -
b) a heating unit mounted within said housing, said heating unit including a heating element, and at least a portion of said heating unit being aligned with said opening in said frame; c) a source of current; d) a safety switch which selectively prevents electrical current from flowing through said heating element; e) circuitry connecting said heating element, said source of current and said safety switch; f) a protective frame pivotally connected to a casing on the outside thereof; and g) a press bar having a rear end pivotally connected to the second end of the housing.
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11. An electric heat sealer comprising
(a) a casing; -
(g) a sealing mechanism mounted within said casing, said sealing mechanism including; (iii)a heat insulative base having a top, and (iv) an electric heating wire through which an electrical current can flow; (h) a frame having an opening defined therethrough; (i) a heat resistant cover sheet removably secured to said top of said heat insulative base by said frame; (j) operating means pivotally connected to said casing; and (k) a safety device which selectively prevents electrical current from flowing through said electric heating wire; wherein said safety device comprises a protective frame pivotally connected to said casing on the outside thereof and pivotable between a first position in which said protective frame is disposed between said heat insulative base of said sealing mechanism and said operating means, and a second position in which said protective frame is not disposed there between. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification