US3640245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circulating device
Assignee: SCHAEFER MACHINE COMPANY Inc PO BOX 512 BOSTON POST ROAD CLINTON CT 06413 A CORP OF CT
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Filing: 1970-01-09
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Granted: 1972-02-08
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Expires: 1990-01-09
Abstract
Abstract This disclosure relates to a device for preventing adhesive in an adhesive coating mechanism from thickening and decreases the problem of air drying of such adhesive. A mechanism is provided to constantly recirculate liquid adhesive which is deposited between a pair of cooperating rolls so that excess liquid is removed from between the rolls and air drying thereof is substantially decreased.
Inventors
- 👤 Charles F Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:24
CPC Classifications
B; B05; B05C; B05C1/00; B05C1/04; B05C1/08; B05C1/086; B05C1/0865; B05C1/0813; B05C1/0826; B05C1/0834
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
173 words
A device for use in combination with an apparatus for applying a viscous liquid through a narrow elongated orifice and having an elongated reservoir defined above said orifice, a liquid tank, a conduit leading from said tank to the reservoir, an overflow opening at one end of said reservoir defining means, a second conduit providing communication between the overflow opening and the tank together with means for moving liquid from the tanK to the reservoir, comprising a carrier member, means movably mounting said carrier member above said reservoir, a generally flat surfaced paddlelike member carried by said carrier member extending into the reservoir, means for moving said carrier member on said mounting means toward the overflow aperture so that said paddlelike member forces liquid in the reservoir toward the overflow aperture, means for rotating said paddlelike member as it nears said overflow aperture and returning said paddlelike member toward the other end of the reservoir whereby a minimum surface area of said paddlelike member is presented to the liquid upon the return travel.
Claim 2
Independent Claim
173 words
A device for use in combination with an apparatus for applying a viscous liquid through a narrow elongated orifice and having an elongated reservoir defined above said orifice, a liquid tank, a conduit leading from said tank to the reservoir, an overflow opening at one end of said reservoir defining means, a second conduit providing communication between the overflow opening and the tank together with means for moving liquid from the tanK to the reservoir, comprising a carrier member, means movably mounting said carrier member above said reservoir, a generally flat surfaced paddlelike member carried by said carrier member extending into the reservoir, means for moving said carrier member on said mounting means toward the overflow aperture so that said paddlelike member forces liquid in the reservoir toward the overflow aperture, means for rotating said paddlelike member as it nears said overflow aperture and returning said paddlelike member toward the other end of the reservoir whereby a minimum surface area of said paddlelike member is presented to the liquid upon the return travel.
Claim 3
Dependent Claim
28 words
The device of claim 1 further including spaced apart frame means and support means comprising rods upon which said carrier member is slidable carried between said frame means.
Claim 4
Dependent Claim
33 words
The device of claim 2 wherein said drive means includes a threaded shaft rotatably mounted between said frame means, and a threaded member on said carrier adapted to be engaged on said shaft.
Claim 5
Dependent Claim
35 words
The device of claim 3 further including a locking mechanism for holding said shoe on said shaft, means for unlocking said locking mechanism and lifting said shoe when said paddlelike member approaches said overflow aperture.
Claim 6
Dependent Claim
41 words
The device of claim 4 wherein said locking mechanism is a two-link toggle and said means for unlocking is an abutment member which is struck by said toggle linkage as the paddlelike member approaches the overflow aperture end of the reservoir.
Claim 7
Dependent Claim
22 words
The device of claim 4 further including means disposed at the nonoverflow aperture end of the reservoir for relocking said locking mechanism.
Claim 8
Dependent Claim
39 words
The device of claim 2 wherein said paddlelike member is mounted to said carrier member for rotation between positions essentially 90* apart, means mounted to both of said frame means for rotating said paddlelike member between said two positions.
Claim 9
Dependent Claim
51 words
The device of claim 4 wherein said locking means is a two-link toggle, one end of one toggle link being pivotally mounted to said carrier member, one end of said other toggle link being pivotally mounted to said shoe, the other ends of said links being pivotally mounted to each other.
Claim 10
Dependent Claim
21 words
The device of claim 4 further including spring means for returning said carrier member toward the other end of said reservoir.
Claim 11
Dependent Claim
179 words
Apparatus for applying liquid adhesive or the like to sheet or slab material, spaced apart support means, a coating roll and coating control roll rotatably supported between said support means in rolling contact and defining a reservoir therebetween, end plates at the opposite end of the rolls extending above the line of rolling contact of the rolls and arranged to define the reservoir with the rolls, one of the end plates having an overflow opening therein, a tank, a conduit extending from the overflow opening to the tank, a pump and conduit for delivering liquid from the tank to the reservoir; a member movable back and forth over said reservoir and a generally flat surfaced paddlelike member connected to said member movable so that said paddlelike member forces liquid in the reservoir toward the overflow opening and means for rotating said paddlelike member as it nears said overflow opening and returning said paddlelike member toward the other end of the reservoir whereby a minimum surface area of said paddlelike member is presented to the liquid upon the return travel.
Claim 12
Dependent Claim
179 words
Apparatus for applying liquid adhesive or the like to sheet or slab material, spaced apart support means, a coating roll and coating control roll rotatably supported between said support means in rolling contact and defining a reservoir therebetween, end plates at the opposite end of the rolls extending above the line of rolling contact of the rolls and arranged to define the reservoir with the rolls, one of the end plates having an overflow opening therein, a tank, a conduit extending from the overflow opening to the tank, a pump and conduit for delivering liquid from the tank to the reservoir; a member movable back and forth over said reservoir and a generally flat surfaced paddlelike member connected to said member movable so that said paddlelike member forces liquid in the reservoir toward the overflow opening and means for rotating said paddlelike member as it nears said overflow opening and returning said paddlelike member toward the other end of the reservoir whereby a minimum surface area of said paddlelike member is presented to the liquid upon the return travel.
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) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |