US3755045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packing tape binding machine
Assignee: Individual
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Filing: 1971-05-07
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Granted: 1973-08-28
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Expires: 1991-05-07
Abstract
Abstract A packing tape binding machine has a pressing device for pressing one end portion of the tape against the upper surface of a base plate, a heater for fusing, and an elevating body for holding the other end portion of the tape on said fusing heater and severing said tape while pressing the other end portion of the tape as it is cut on the one end portion of the tape positioned on the base plate. A tape winder is driven by a handle for winding the tape on a packing. A rack-driven tape welding heater for melting the opposed upper and lower surfaces of the end portions of the tape is provided which can be advanced between the upper and lower end portions of the tape as the elevating body commences to descend when severing the other end portion of the tape and then withdrawn, the movement of the heater being controlled by a timer.
Inventors
- 👤 M Takami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:09
CPC Classifications
B; B65; B65B; B65B13/00; B65B13/18; B65B13/24; B65B13/32; B65B13/327
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
226 words
A packaging machine comprising a base plate and a means for holding the overlapped ends of a thermoplastic tape wound around a package by pressing the tape to said base plate, a press head and means for moving said press head up and down for pressing the opposite faces of said overlapped tape ends against a heater inserted therebetween and for pressing the tapes melted by the heater to adhere together after the heater is retreated, a meAns for projecting said heater between the overlapped tapes below the press head during the downward movement of said press head, rack means for retreating said heater, said rack means being slidably mounted on said base plate, a handle having a gear meshing with said rack means for sliding said rack means and spring means for biasing said rack toward the retreating direction of said heater, a slidable rod carrying said heater and engageable with said rack when said rack is moved toward said rod, and an adjustment means for controlling the gear meshing with said rack, said gear being adapted to rotate freely from the handle when said tapes with the heater inserted therebetween are pressed together by said press head, whereby said rack is moved toward said rod by the action of said spring means and engages said rod so as to cause said heater to retreat.
Claim 2
Dependent Claim
226 words
A packaging machine comprising a base plate and a means for holding the overlapped ends of a thermoplastic tape wound around a package by pressing the tape to said base plate, a press head and means for moving said press head up and down for pressing the opposite faces of said overlapped tape ends against a heater inserted therebetween and for pressing the tapes melted by the heater to adhere together after the heater is retreated, a meAns for projecting said heater between the overlapped tapes below the press head during the downward movement of said press head, rack means for retreating said heater, said rack means being slidably mounted on said base plate, a handle having a gear meshing with said rack means for sliding said rack means and spring means for biasing said rack toward the retreating direction of said heater, a slidable rod carrying said heater and engageable with said rack when said rack is moved toward said rod, and an adjustment means for controlling the gear meshing with said rack, said gear being adapted to rotate freely from the handle when said tapes with the heater inserted therebetween are pressed together by said press head, whereby said rack is moved toward said rod by the action of said spring means and engages said rod so as to cause said heater to retreat.
Claim 3
Dependent Claim
89 words
A packaging machine as claimed in claim 1 wherein said adjustment means comprises a cylinder having a piston and a piston rod spring-biased toward said gear meshing with said rack, a path communicating the forward and rear chambers of said cylinder and a throttle valve provided in said path, a disc provided integrally with said gear and contacted by said piston rod, said valve being capable of adjusting the opening of said path, whereby the braking force of the piston against the gear is controlled by the throttle valve.
Claim 4
Dependent Claim
86 words
A packaging machine as claimed in claim 1 wherein said adjustment means comprises a diaphragm type pneumatic cylinder having a piston and piston rod connected with a diaphragm, said diaphragm partitioning said cylinder into two chambers, a pawl integral with said gear, an intermediate rocking cam contacting both said pawl and said piston rod, and a means for moving said cylinder toward the cam, whereby the braking force of said piston against said gear is controlled by moving the cylinder toward or away from said cam.
Claim 5
Dependent Claim
33 words
A packaging machine as claimed in claim 1 wherein a second heater is provided adjacent said press head for cutting off said tape in cooperation with the downward movement of said press head.
Claim 6
Dependent Claim
67 words
A packaging machine as claimed in claim 1 wherein said holding means for holding said tape ends comprises a roll having knurls thereon, and a ratchet mechanism connected with said roll to prevent the reverse rotation of said roll, said roll being adapted to be elevated to make a clearance between said base plate and to be lowered to press said tape ends to the base plate.
Claim 7
Dependent Claim
128 words
A packaging machine as claimed in claim 1 wherein said holding means for holding said end portions of said tape comprises a first pawl for holding one end portion of said tape, said pawl being pivoted and springbiased so as to make one end thereof contact the upper surface of said base plate, a second pawl for holding the other end portion of said tape, said second pawl being pivoted in a recess formed on one side of said base plate and being spring-biased to make one end thereof contact the side wall of said recess, and a means for forcing said first pawl up and said second pawl down to make a clearance between the respective contacting faces for inserting the respective end portions of said tape.
Claim 8
Dependent Claim
64 words
A packaging machine as claimed in claim 1 wherein a means is provided for winding one end portion of said tape to constrict said tape around a package, said means comprises a rotatable roll having a transverse slot thereon for inserting the tape end therein, a ratchet mechanism connected with said roll to prevent reverse rotation thereof, and a handle for rotating said roll.
Claim 9
Dependent Claim
75 words
A packaging machine as claimed in claim 1 wherein a stopper means slidable on said base plate and spring-biased toward the press head is provided at the opposite side of said heater, said stopper being adapted to stop said press head so as to provide a clearance sufficient for said heater to project below said press head and further adapted to be pushed away by the edge of said heater projected below said press head.
Claim 10
Dependent Claim
65 words
A packaging machine as claimed in claim 4 wherein a support plate is provided adjacent said press head for mounting said second heater and a pressing element for holding the tape end to be cut between the support plate is provided adjacent said press head, said pressing element being adapted to be elevated and lowered in accordance with the vertical movement of said press head.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |