Patent US3851443A successfully refreshed from Google Patents.
US3851443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Can seal applier
Assignee: Schlegel Manufacturing Co
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Filing: 1973-05-07
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Granted: 1974-12-03
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Expires: 1993-05-07
Abstract
Abstract A can seal applier has an indexing mechanism carrying endless belt and pulley sets at four stations. The pulley sets include a pair of movable pulleys that close on opposite sides of the can and wrap the belt around the can to hold the can on the indexing mechanism and rotate the can at a seal wrapping station. A continuous length of seal is fed to a vacuum gripper wheel, and a knife cuts off a length of the seal that is wrapped around the can by the gripper wheel as the can rotates. At another station a gripper draws the free ends of the seal together for joining by a fuser, and at another station the movable pulleys are spread apart to release the can and move it off the indexing mechanism.
Inventors
- 👤 H Fine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:46
CPC Classifications
B; B65; B65B; B65B7/00; B65B7/16; B65B7/28; B65B7/2842; B65B7/2864
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
235 words
A can seal applier comprising: a. an indexing mechanism; b. a plurality of endless belt and pulley sets arranged at four stations on said indexing mechanism; c. each of said pulley sets including a drive pulley and a pair of movable idler pulleys; d. means for closing said movable pulleys against opposite sides of said can at a first station to wrap said endless belt around half of the cylindrical circumference of said can and hold said can on said indexing mechanism; e. means for feeding a continuous seal strip to a second station; f. means for cutting off a length of said seal strip; g. a rotatable vacuum gripper wheel for holding said cut off length of said seal strip; h. means for rotating said drive pulley at said second station to rotate said can with said belt; i. said vacuum gripper wheel engaging and rotating with said can at said second station to wrap said seal around said can; j. said vacuum gripper wheel having rims straddling said seal and a channel between said rims for pressing said seal onto said can to be supported on said can; k. means at a third station for gripping and joining the free ends of said wrapped seal; and l. means for opening said movable pulleys away from said can at a fourth station to release said can and move said can oFf said indexing mechanism.
Claim 2
Dependent Claim
235 words
A can seal applier comprising: a. an indexing mechanism; b. a plurality of endless belt and pulley sets arranged at four stations on said indexing mechanism; c. each of said pulley sets including a drive pulley and a pair of movable idler pulleys; d. means for closing said movable pulleys against opposite sides of said can at a first station to wrap said endless belt around half of the cylindrical circumference of said can and hold said can on said indexing mechanism; e. means for feeding a continuous seal strip to a second station; f. means for cutting off a length of said seal strip; g. a rotatable vacuum gripper wheel for holding said cut off length of said seal strip; h. means for rotating said drive pulley at said second station to rotate said can with said belt; i. said vacuum gripper wheel engaging and rotating with said can at said second station to wrap said seal around said can; j. said vacuum gripper wheel having rims straddling said seal and a channel between said rims for pressing said seal onto said can to be supported on said can; k. means at a third station for gripping and joining the free ends of said wrapped seal; and l. means for opening said movable pulleys away from said can at a fourth station to release said can and move said can oFf said indexing mechanism.
Claim 3
Dependent Claim
35 words
The seal applier of claim 1 wherein said vacuum gripper wheel has a plurality of vacuum passageways and means for evacuating said passageways around a gripping portion of the perimeter of said vacuum gripper wheel.
Claim 4
Dependent Claim
20 words
The seal applier of claim 2 wherein said evacuating means includes means for evacuating the region tangent to said can.
Claim 5
Dependent Claim
23 words
The seal applier of claim 1 wherein said seal gripper and joiner includes shoes for drawing said free ends of said seal together.
Claim 6
Dependent Claim
27 words
The seal applier of claim 4 wherein said seal gripping and joining means includes an electric heater element for fusing said free ends of said seal together.
Claim 7
Dependent Claim
35 words
The seal applier of claim 5 wherein said vacuum gripper wheel has a plurality of vacuum passageways and means for evacuating said passageways around a gripping portion of the perimeter of said vacuum gripper wheel.
Claim 8
Dependent Claim
20 words
The seal applier of claim 6 wherein said evacuating means includes means for evacuating the region tangent to said can.
References Cited (Backward Citations)
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US2877612A
Cited
US3162564A
Cited
US3577293A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |