CA2112088C - Pen base electric heat sealer - Google Patents
Pen base electric heat sealerInfo
- Publication number
- CA2112088C CA2112088C CA002112088A CA2112088A CA2112088C CA 2112088 C CA2112088 C CA 2112088C CA 002112088 A CA002112088 A CA 002112088A CA 2112088 A CA2112088 A CA 2112088A CA 2112088 C CA2112088 C CA 2112088C
- Authority
- CA
- Canada
- Prior art keywords
- heat sealing
- electric
- housing
- heat
- electric heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
- B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
- B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
- B29C65/222—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip comprising at least a single heated wire
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
- B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
- B29C65/228—Heated wire resistive ribbon, resistive band or resistive strip characterised by the means for electrically connecting the ends of said heated wire, resistive ribbon, resistive band or resistive strip
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/431—Joining the articles to themselves
- B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
- B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8161—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps said pressing elements being supported or backed-up by springs or by resilient material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8167—Quick change joining tools or surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
- B29C66/8362—Rollers, cylinders or drums moving relative to and tangentially to the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/84—Specific machine types or machines suitable for specific applications
- B29C66/861—Hand-held tools
- B29C66/8616—Pen or pencil like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/84—Specific machine types or machines suitable for specific applications
- B29C66/861—Hand-held tools
- B29C66/8618—Hand-held tools being battery operated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7128—Bags, sacks, sachets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Package Closures (AREA)
Abstract
A pen-shaped electric heat sealer comprising a power supply unit, a tapered housing at one end to hold an electric heat seal unit, and a cap with a unitary clip for covering the tapered housing and clipping the heat sealer to a pocket is disclosed. The electric heat seal unit is electrically connected to the power supply unit to produce heat for sealing as it is pressed on a workpiece to be sealed. The electric heat seal unit is electrically disconnected from the power supply unit as pressure is removed from the tip of the heat sealing unit when the heat sealer is lifted away from the workpiece.
Description
PEN BASE ELECTRIC HEAT SEALER
BACKGROUND O~ THF I~V~N'1'10N
The present invention relates to a heat sealer, and more particularly to a pen base electric heat sealer for sealing polyethylene bags, etc. by heat.
A variety of electric heat sealing apparatus have been disclosed for industrial and home uses, and have appeared on the market. Among these electric heat sealing apparatus, stapler type electric heat sealing apparatus are most popularly accepted by consumers. A
stapler type electric heat sealing apparatus, exemplars of which are shown in U.S. Patent No. 5,142,123 and - Japanese Patent No. 63-57206, is generally comprised of a housing made in the form of a stapler. Because much storage space is needed, a stapler type electric heat lS sealing apparatus is not convenient for carrying with oneself as one of personal accessories. Another drawback of stapler type electric heat sealing apparatus is that the heating action must be employed twice when sealing the open side of a polyethylene bag. When sealing the open side of a polyethylene bag with a stapler type electric heat sealing apparatus, one end of the open side of the polyethylene bag is held in one hand as the other hand is holding the electric heat sealing apparatus to seal the bag. Therefore, the corner area of the open side of the polyethylene bag must be sealed later.
SUMMARY OF THE I~V~N'1' ~ON
The present invention eliminates the aforesaid drawbacks. It is one object of the present invention to provide a pen base electric heat sealer which is as easy to use as a pen. It is another object of the present invention to provide a pen base electric heat sealer which is as easy to carry as a pen. It is still another object of the present invention to provide a pen base electric heat sealer which is automatically turned on to produce heat for sealing as it is pressed on the workpiece to be sealed, or turned off to stop from producing heat as it is released from the workpiece. The present invention uses a coil spring to separate the electric heating unit from the DC power supply unit. As the front end of the electric heating unit is pressed on the workpiece to compress the coil spring, the electric contacts on the electric heating unit become electrically connected to the two opposite contacts of the DC power supply unit, and therefore the electric heating unit is turned on. As the electric heating unit is released from the workpiece, the coil spring immediately pushes the contacts of the electric R
heating unit away from the contacts of the DC power supply unit. The cylindrical housing of the pen base electric heat sealer is attached with a cap having a clip convenient for hanging on the pocket.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is an exploded view of a pen base electric heat sealer according to the preferred embodiment of the present invention;
Fig. 2 is an elevational view of the pen base electric heat sealer;
Fig. 3 is a longitudinal sectional view of the pen base electric heat sealer;
Fig. 4 is a partial sectional view of the pen base electric heat sealer showing the metal clamps of the electric heat seal unit disconnected from the contacts of the metal contact plates;
Fig. 5 is similar to Fig. 4 but showing the ~etal clamps electrically connected to the contacts of the metal contact plates;
Fig. 6 is a schematic drawing showing the pen base electric heat seale~ fastened to the pocket by the clip on the cap thereof;
Fig. 7 is a schematic drawing showing the operation of the present invention in sealing the open side of a polyethylene bag through one stroke;
Fig. 8 is a longitudinal sectional view of an alternate form of the housing of the pen base electric heat sealer according to the present invention;
Fig. 9 i~- another embodiment of the present invention which uses an embedded stainless ball for the sealing tip;
Fig. 10 is another embodiment of the present invention which using a roller for the sealing tip;
Fig. 10A is a sectional view taken on line 10 10A-lOA of Fig. 10;
Fig. 11 is another embodiment of the present invention which having an elbow-shape on the sealing tip end of the pen.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring first to Figures 1, 2 and 3, a pen base electric heat sealer in accordance with the 0 preferred embodiment of the present invention is non-metallic generally comprised of a/cylindrical housing 1 made in the shape of a pen convenient for the holding of the hand. The cylindrical housing 1 is comprised of a power supply unit 3 and an electric heat seal unit 5 longitudinally connected to the power ~upply unit 3 at ,~ .
one end. The power supply unit 3 comprises a cylindrical battery chamber 30, which receives two dry battery cells 4;4' connected in series (see Figure 3), and a cylindrical connecting neck 31 in a relatively 5 smaller outer diameter extended from the battery chamber 30 at one end for connecting the electric heat seal unit 5 in a flush manner.
The battery chamber 30 has an opening 301 for loading the dry battery cells 4;4' and a battery lid 37 . detachably covered on the opening 301. The battery lid 37 has two retainers 370;371 on two opposite ends thereof for mounting on the opening 301.
The power supply unit 3 comprises two metal contact plates 32;33, each having one end connected to either pole of the dry battery cells 4;4' and an opposite end extended out of the bottom wall 34 of the battery chamber 30 and terminated to a respective contact 36 or 35. One metal contact plate 32 is connected in series to a power switch 38 for On/Off switching control. The bottom wall 34 of the battery chamber 30 is a division wall between the battery chamber 30 and the heat seal unit 5.
The electric heat seal unit 5 is received in a socket 2. The~ socket 2 has a top open end 22 in a relatively bigger diameter, into which the connecting neck 31 fits, and a bottom open end in a relatively smaller diameter terminated to a small opening 20. The non-metallic electric heat seal unit 5 comprises a/base 51 having a top center hole 510 and a convexly curved surface sealing tip 511, a coil spring 50 having one end inserted in the hole 510 on the base 51 and an opposite end stopped against the bottom wall 34 of the battery chamber 30 ( see also Figure 4), two metal clamps 53;54 bilatreally fastened to the base 51 at the top, an electric wire 52 fastened between the metal clamps 53;54 and attached to the bottom edge of the bottom projecting block 511 being disposed 15 out of the 15 socket 2 through the opening 20, a protective layer of heat-resisting fibers 55 covered over the electric heating wire 52 for protection.
Referring to Figure 4 the electric heat seal unit 5 is retained inside the socket 2 between two stop blocks 21;21' with the coil spring 50 stopped against the bottom wall 34 of the battery chamber 30, and the metal clamps 53;54 are respectively ~spaced below the contacts 36;35. The stop blocks 21 ;21' are provided to linear -`~ guide the/movement of the electric heat seal unit S
along the longitudinal axis of the housing 1.
Referring to Figure S, as the switch 38 is switched on and the convexlY curved surface sealing tip Sll of the electric heat seal unit 5 is pressed and slid on the plastic films 6;6' to be sealed, the metal clamps S53;54 become respectivelY connected to the contacts 36;35 to electrically connect the electric circuit, and therefore the electric heating wire 52 is heated to give heat through the protective layer of heat resisting fibers SS for sealing the plastic films 6;6'. As soon 10as the sealing tip 511 of the electric heat seal unit 5 is removed from the plastic films 6;6'. the coil spring 50 immediately pushes base 51 outwards, and therefore the metal clamps 53;54 are separated from the contacts 36;35 to disconnect the electric circuit. Therefore.
lSthe pen base electric heat sealer is as easy to use as a pen.
Referring to Figure 6 and Figure 1 again, there is provided a cap 7 with a clip 70 for covering -the socket 2 and the electric heat seal unit S when the 20pen base electric heat sealer is not in use. By means of the. clip 70, the pen base electric heat sealer can be fastened to a pocket.
Referring to Figure 7, as the pen base electric heat sealer is as easy to use as a pen, sealing 25the open side of a polyethylene bag can be done in one . . , ~ `
stroke.
Referring to Figure 8, therein illustrated is an alternate form of the power supply unit 3. The battery chamber 30 of the power supply unit 3 comprises a rear opening 39 covered with an end cap 9 for loading dry battery cells 4;4'. The end cap 9 has a conductor 90 on the inside. As the end cap 9 is fastened to the battery chamber 30 of the power supply unit 3, the conductor 90 and the metal contacts 32;33 and the dry battery cells 4;4' form into a closed circuit. This arranqement is designed to replace the aforesaid opening 301 and battery iid 37 for easy loading of the dry battery cells 4;4'.
Referring to Figure 9, therein illustrated is another embodiment of the present invention whlch uses an embedded stainless ball 512 for the sealing tip. The major purpose of using an embedded stainless ball for the sealing tip is reducing friction between the sealing tip and the plastic films, by changing sliding friction to rolling friction, so as to avoid scratching the - plastic films. The ball tip could also be useful for a small curvature sealing path.
Referring to Figure 10 and Figure lOA, p~
which illustrate another embodiment of the present inven-tion, similar to Figure 9 but using a roller 513 for the sealing tip. The major purpose of using a roller is reduc-ing friction and widening the sealing path. Furthermore, the rolling surface of the roller 513 could be embossed with one or more trademarks, advertising words or patterns for improving a sense of beauty or advertising-effect.
Referring to Figure 11, therein illustrated is another embodiment of the present invention which utilizes a sealing tip 511, as already described, and having an elbow-shape structure suitable for use in a hand-writing manner and which could be used in a narrow working space.
~
BACKGROUND O~ THF I~V~N'1'10N
The present invention relates to a heat sealer, and more particularly to a pen base electric heat sealer for sealing polyethylene bags, etc. by heat.
A variety of electric heat sealing apparatus have been disclosed for industrial and home uses, and have appeared on the market. Among these electric heat sealing apparatus, stapler type electric heat sealing apparatus are most popularly accepted by consumers. A
stapler type electric heat sealing apparatus, exemplars of which are shown in U.S. Patent No. 5,142,123 and - Japanese Patent No. 63-57206, is generally comprised of a housing made in the form of a stapler. Because much storage space is needed, a stapler type electric heat lS sealing apparatus is not convenient for carrying with oneself as one of personal accessories. Another drawback of stapler type electric heat sealing apparatus is that the heating action must be employed twice when sealing the open side of a polyethylene bag. When sealing the open side of a polyethylene bag with a stapler type electric heat sealing apparatus, one end of the open side of the polyethylene bag is held in one hand as the other hand is holding the electric heat sealing apparatus to seal the bag. Therefore, the corner area of the open side of the polyethylene bag must be sealed later.
SUMMARY OF THE I~V~N'1' ~ON
The present invention eliminates the aforesaid drawbacks. It is one object of the present invention to provide a pen base electric heat sealer which is as easy to use as a pen. It is another object of the present invention to provide a pen base electric heat sealer which is as easy to carry as a pen. It is still another object of the present invention to provide a pen base electric heat sealer which is automatically turned on to produce heat for sealing as it is pressed on the workpiece to be sealed, or turned off to stop from producing heat as it is released from the workpiece. The present invention uses a coil spring to separate the electric heating unit from the DC power supply unit. As the front end of the electric heating unit is pressed on the workpiece to compress the coil spring, the electric contacts on the electric heating unit become electrically connected to the two opposite contacts of the DC power supply unit, and therefore the electric heating unit is turned on. As the electric heating unit is released from the workpiece, the coil spring immediately pushes the contacts of the electric R
heating unit away from the contacts of the DC power supply unit. The cylindrical housing of the pen base electric heat sealer is attached with a cap having a clip convenient for hanging on the pocket.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is an exploded view of a pen base electric heat sealer according to the preferred embodiment of the present invention;
Fig. 2 is an elevational view of the pen base electric heat sealer;
Fig. 3 is a longitudinal sectional view of the pen base electric heat sealer;
Fig. 4 is a partial sectional view of the pen base electric heat sealer showing the metal clamps of the electric heat seal unit disconnected from the contacts of the metal contact plates;
Fig. 5 is similar to Fig. 4 but showing the ~etal clamps electrically connected to the contacts of the metal contact plates;
Fig. 6 is a schematic drawing showing the pen base electric heat seale~ fastened to the pocket by the clip on the cap thereof;
Fig. 7 is a schematic drawing showing the operation of the present invention in sealing the open side of a polyethylene bag through one stroke;
Fig. 8 is a longitudinal sectional view of an alternate form of the housing of the pen base electric heat sealer according to the present invention;
Fig. 9 i~- another embodiment of the present invention which uses an embedded stainless ball for the sealing tip;
Fig. 10 is another embodiment of the present invention which using a roller for the sealing tip;
Fig. 10A is a sectional view taken on line 10 10A-lOA of Fig. 10;
Fig. 11 is another embodiment of the present invention which having an elbow-shape on the sealing tip end of the pen.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring first to Figures 1, 2 and 3, a pen base electric heat sealer in accordance with the 0 preferred embodiment of the present invention is non-metallic generally comprised of a/cylindrical housing 1 made in the shape of a pen convenient for the holding of the hand. The cylindrical housing 1 is comprised of a power supply unit 3 and an electric heat seal unit 5 longitudinally connected to the power ~upply unit 3 at ,~ .
one end. The power supply unit 3 comprises a cylindrical battery chamber 30, which receives two dry battery cells 4;4' connected in series (see Figure 3), and a cylindrical connecting neck 31 in a relatively 5 smaller outer diameter extended from the battery chamber 30 at one end for connecting the electric heat seal unit 5 in a flush manner.
The battery chamber 30 has an opening 301 for loading the dry battery cells 4;4' and a battery lid 37 . detachably covered on the opening 301. The battery lid 37 has two retainers 370;371 on two opposite ends thereof for mounting on the opening 301.
The power supply unit 3 comprises two metal contact plates 32;33, each having one end connected to either pole of the dry battery cells 4;4' and an opposite end extended out of the bottom wall 34 of the battery chamber 30 and terminated to a respective contact 36 or 35. One metal contact plate 32 is connected in series to a power switch 38 for On/Off switching control. The bottom wall 34 of the battery chamber 30 is a division wall between the battery chamber 30 and the heat seal unit 5.
The electric heat seal unit 5 is received in a socket 2. The~ socket 2 has a top open end 22 in a relatively bigger diameter, into which the connecting neck 31 fits, and a bottom open end in a relatively smaller diameter terminated to a small opening 20. The non-metallic electric heat seal unit 5 comprises a/base 51 having a top center hole 510 and a convexly curved surface sealing tip 511, a coil spring 50 having one end inserted in the hole 510 on the base 51 and an opposite end stopped against the bottom wall 34 of the battery chamber 30 ( see also Figure 4), two metal clamps 53;54 bilatreally fastened to the base 51 at the top, an electric wire 52 fastened between the metal clamps 53;54 and attached to the bottom edge of the bottom projecting block 511 being disposed 15 out of the 15 socket 2 through the opening 20, a protective layer of heat-resisting fibers 55 covered over the electric heating wire 52 for protection.
Referring to Figure 4 the electric heat seal unit 5 is retained inside the socket 2 between two stop blocks 21;21' with the coil spring 50 stopped against the bottom wall 34 of the battery chamber 30, and the metal clamps 53;54 are respectively ~spaced below the contacts 36;35. The stop blocks 21 ;21' are provided to linear -`~ guide the/movement of the electric heat seal unit S
along the longitudinal axis of the housing 1.
Referring to Figure S, as the switch 38 is switched on and the convexlY curved surface sealing tip Sll of the electric heat seal unit 5 is pressed and slid on the plastic films 6;6' to be sealed, the metal clamps S53;54 become respectivelY connected to the contacts 36;35 to electrically connect the electric circuit, and therefore the electric heating wire 52 is heated to give heat through the protective layer of heat resisting fibers SS for sealing the plastic films 6;6'. As soon 10as the sealing tip 511 of the electric heat seal unit 5 is removed from the plastic films 6;6'. the coil spring 50 immediately pushes base 51 outwards, and therefore the metal clamps 53;54 are separated from the contacts 36;35 to disconnect the electric circuit. Therefore.
lSthe pen base electric heat sealer is as easy to use as a pen.
Referring to Figure 6 and Figure 1 again, there is provided a cap 7 with a clip 70 for covering -the socket 2 and the electric heat seal unit S when the 20pen base electric heat sealer is not in use. By means of the. clip 70, the pen base electric heat sealer can be fastened to a pocket.
Referring to Figure 7, as the pen base electric heat sealer is as easy to use as a pen, sealing 25the open side of a polyethylene bag can be done in one . . , ~ `
stroke.
Referring to Figure 8, therein illustrated is an alternate form of the power supply unit 3. The battery chamber 30 of the power supply unit 3 comprises a rear opening 39 covered with an end cap 9 for loading dry battery cells 4;4'. The end cap 9 has a conductor 90 on the inside. As the end cap 9 is fastened to the battery chamber 30 of the power supply unit 3, the conductor 90 and the metal contacts 32;33 and the dry battery cells 4;4' form into a closed circuit. This arranqement is designed to replace the aforesaid opening 301 and battery iid 37 for easy loading of the dry battery cells 4;4'.
Referring to Figure 9, therein illustrated is another embodiment of the present invention whlch uses an embedded stainless ball 512 for the sealing tip. The major purpose of using an embedded stainless ball for the sealing tip is reducing friction between the sealing tip and the plastic films, by changing sliding friction to rolling friction, so as to avoid scratching the - plastic films. The ball tip could also be useful for a small curvature sealing path.
Referring to Figure 10 and Figure lOA, p~
which illustrate another embodiment of the present inven-tion, similar to Figure 9 but using a roller 513 for the sealing tip. The major purpose of using a roller is reduc-ing friction and widening the sealing path. Furthermore, the rolling surface of the roller 513 could be embossed with one or more trademarks, advertising words or patterns for improving a sense of beauty or advertising-effect.
Referring to Figure 11, therein illustrated is another embodiment of the present invention which utilizes a sealing tip 511, as already described, and having an elbow-shape structure suitable for use in a hand-writing manner and which could be used in a narrow working space.
~
Claims (17)
1. An electric heat sealer comprising:
i) an elongated power housing having a central longitudinal axis, a lower end and comprising an interior chamber for receiving electrical power storage means having positive and negative battery terminals, and positive and negative conductive electrical terminal means adjacent the lower end thereof electrically connected to said positive and negative battery terminals;
ii) a heat sealing unit housing having a longitudinal axis coincident with the longitudinal axis of said power housing and connected to said power housing at said lower end thereof, said power housing and said heat sealing unit housing, when joined, being generally pen-like in shape, said heat sealing unit housing comprising an electric heat sealing element, said electric heat sealing element comprising:
a) a heat sealing tip extending from said heat sealing unit housing and mounted for reciprocal movement along said longitudinal axis of said power housing, said heat sealing tip comprising a lower heat conducting surface and first and second conductive contact terminals for contacting said positive and negative conductive electrical terminals;
b) electric heating element means comprising an electric heating wire electrically connected to said first and second conductive contact terminals for heating said heat sealing tip;
c) spring means disposed between said electric heat sealing tip and said power housing axially biasing said electric heat sealing tip away from said power housing;
whereby when sufficient axially directed pressure is applied to said lower heat conducting surface of said heat sealing tip, said heat sealing tip moves from a rest position in which said first and second conductive contact terminals are spaced from said positive and negative conductive electrical terminals and the electrical circuit including said electrical power storage means and said electric heating element is broken, to a second position in which said first and second conductive contact terminals contact said positive and negative conductive electrical terminals thereby completing an electric circuit including said electrical power storage means and said electric heating element and causing said electric heating element to be heated.
i) an elongated power housing having a central longitudinal axis, a lower end and comprising an interior chamber for receiving electrical power storage means having positive and negative battery terminals, and positive and negative conductive electrical terminal means adjacent the lower end thereof electrically connected to said positive and negative battery terminals;
ii) a heat sealing unit housing having a longitudinal axis coincident with the longitudinal axis of said power housing and connected to said power housing at said lower end thereof, said power housing and said heat sealing unit housing, when joined, being generally pen-like in shape, said heat sealing unit housing comprising an electric heat sealing element, said electric heat sealing element comprising:
a) a heat sealing tip extending from said heat sealing unit housing and mounted for reciprocal movement along said longitudinal axis of said power housing, said heat sealing tip comprising a lower heat conducting surface and first and second conductive contact terminals for contacting said positive and negative conductive electrical terminals;
b) electric heating element means comprising an electric heating wire electrically connected to said first and second conductive contact terminals for heating said heat sealing tip;
c) spring means disposed between said electric heat sealing tip and said power housing axially biasing said electric heat sealing tip away from said power housing;
whereby when sufficient axially directed pressure is applied to said lower heat conducting surface of said heat sealing tip, said heat sealing tip moves from a rest position in which said first and second conductive contact terminals are spaced from said positive and negative conductive electrical terminals and the electrical circuit including said electrical power storage means and said electric heating element is broken, to a second position in which said first and second conductive contact terminals contact said positive and negative conductive electrical terminals thereby completing an electric circuit including said electrical power storage means and said electric heating element and causing said electric heating element to be heated.
2. An electric heat sealer as defined in claim 1 wherein said power housing comprises a lower end surface and said spring means is disposed between said electric heat sealing tip and said lower end surface of said power housing.
3. An electric heat sealer as defined in claim 1 wherein said power housing comprises a lower end surface and said spring means is disposed between said electric heat sealing tip and said electrical power storage means.
4. An electric heat sealer as defined in claim 1, 2 or 3 in which said heat sealing unit housing comprises guide means to restrict the movement of said heat sealing tip to movement along said longitudinal axis of said power unit housing.
5. An electric heat sealer as defined in claim 1, in which a protective cap detachably covers said heat sealing unit housing, said cap comprising a clip for fastening.
6. An electric heat sealer as defined in claim 1, in which said power unit housing comprises switch means for opening or closing said electrical circuit including said electrical power storage means and said electric heating element.
7. An electric heat sealer as defined in claim 1, in which said electric heating element comprises a layer of heat resistant fibres disposed about said heat sealing tip and covering said electric heating wire.
8. An electric heat sealer as defined in claim 1, wherein said power unit housing is removably connectable to said heat sealing unit housing.
9. An electric heat sealer comprising: an elongated power supply housing comprising a power supply unit contained therein, said power supply housing having a longitudinal axis and detachably joined to a heat sealing unit housing at one end thereof, when joined, said power supply housing and said heat sealing unit housing forming a unitary housing generally pen-like in shape, said heat sealing unit housing comprising an electric heat seal unit, said electric heat seal unit having a heat sealing tip projecting from said heat sealing unit housing along said longitudinal axis of said power supply housing, an electric heating element means for heating said heat sealing tip, said electric heating element comprising a wire covered at said heat sealing tip by a protective layer of heat resistant fibres, and a protective cap detachably connected to said heat sealing unit housing for covering said heat sealing tip.
10. An electric heat sealer as defined in claim 9, in which said protective cap detachably covering said heat sealing unit housing comprises a clip for fastening.
11. An electric heat sealer as defined in claim 9, in which said power unit housing comprises switch means for opening or closing said electrical circuit including said electrical power storage means and said electric heating element.
12. An electric heat sealer comprising:
an elongated housing, generally pen-like in shape having a central longitudinal axis, a lower end and comprising i) an interior chamber for receiving electrical power storage means having positive and negative battery terminals;
ii) positive and negative conductive electrical terminal means adjacent the lower end thereof electrically connected to said positive and negative battery terminals;
iii) an electric heat sealing element, said electric heat sealing element comprising:
a) a heat sealing tip extending from said elongated housing and mounted for reciprocal movement along said longitudinal axis of said elongated housing, said heat sealing tip comprising a lower heat conducting surface and first and second conductive contact terminals for contacting said positive and negative conductive electrical terminals;
b) electric heating element means comprising an electric heating wire electrically connected to said first and second conductive contact terminals for heating said heat sealing tip;
c) spring means contacting said electric heat sealing tip and thereby axially biasing said electric heat sealing tip to project from said elongated housing;
an elongated housing, generally pen-like in shape having a central longitudinal axis, a lower end and comprising i) an interior chamber for receiving electrical power storage means having positive and negative battery terminals;
ii) positive and negative conductive electrical terminal means adjacent the lower end thereof electrically connected to said positive and negative battery terminals;
iii) an electric heat sealing element, said electric heat sealing element comprising:
a) a heat sealing tip extending from said elongated housing and mounted for reciprocal movement along said longitudinal axis of said elongated housing, said heat sealing tip comprising a lower heat conducting surface and first and second conductive contact terminals for contacting said positive and negative conductive electrical terminals;
b) electric heating element means comprising an electric heating wire electrically connected to said first and second conductive contact terminals for heating said heat sealing tip;
c) spring means contacting said electric heat sealing tip and thereby axially biasing said electric heat sealing tip to project from said elongated housing;
13 whereby when sufficient axially directed pressure is applied to said lower heat conducting surface of said heat sealing tip, said heat sealing tip moves from a rest position in which said first and second conductive contact terminals are spaced from said positive and negative conductive electrical terminals and the electrical circuit including said electrical power storage means and said electric heating element is broken, to a second position in which said first and second conductive contact terminals contact said positive and negative conductive electrical terminals thereby completing an electric circuit including said electrical power storage means and said electric heating element and causing said electric heating element to be heated.
13. An electric heat sealer as defined in claim 12 wherein said spring means is disposed between said electric heat sealing tip and said electrical power storage means.
13. An electric heat sealer as defined in claim 12 wherein said spring means is disposed between said electric heat sealing tip and said electrical power storage means.
14. An electric heat sealer as defined in claim 12 in which said elongated housing comprises guide means to restrict the movement of said heat sealing tip to movement along said longitudinal axis of said housing.
15. An electric heat sealer as defined in claim 12, in which a protective cap detachably covers said lower end of said elongated housing, said cap comprising a clip for fastening.
16. An electric heat sealer as defined in claim 12, in which said elongated housing comprises switch means for opening or closing said electrical circuit including said electrical power storage means and said electric heating element.
17. An electric heat sealer as defined in claim 12, in which said electric heating element comprises a layer of heat resistant fibres disposed about said heat sealing tip and covering said electric heating wire.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/080,762 US5374806A (en) | 1993-06-24 | 1993-06-24 | Pen base electric heat sealer |
| US08/080,762 | 1993-06-24 | ||
| US08/229,957 | 1993-12-03 | ||
| US08/229,957 US5641418A (en) | 1993-06-24 | 1993-12-03 | Pen base electric heat sealer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2112088A1 CA2112088A1 (en) | 1994-12-25 |
| CA2112088C true CA2112088C (en) | 1997-07-15 |
Family
ID=26763909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002112088A Expired - Fee Related CA2112088C (en) | 1993-06-24 | 1993-12-21 | Pen base electric heat sealer |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2112088C (en) |
-
1993
- 1993-12-21 CA CA002112088A patent/CA2112088C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2112088A1 (en) | 1994-12-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |