US4773354A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for uniformly dispensing a paste material
Assignee: RCA Licensing Corp
•
Filing: 1987-07-13
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Granted: 1988-09-27
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Expires: 2007-07-13
Abstract
Abstract An apparatus for dispensing high viscosity paste materials onto a seal edge includes a conditioning chamber which permits the build up of a back pressure to aid the exit of the paste from the outlet orifice of the chamber. An auger which dispenses the paste from a hopper to the seal edge has a unique thread pitch to also aid in the dispensing of high viscosity paste to the seal edge.
Inventors
- 👤 Leonard P. Wilbur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:26
CPC Classifications
B; B05; B05C; B05C5/00; B05C5/002; B05C5/02; B05C5/0204; Y; Y10; Y10T; Y10T156/00; Y10T156/17; Y10T156/1798
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
128 words
In an apparatus for dispensing paste material through an outlet of a hopper onto a looped edge of an object rotating beneath said hopper as an auger pushes said paste material from said hopper onto said edge, a blade for shearing said paste material upon the completion of a loop around said looped edge, improvements comprising: means for sensing the beginning of said paste material on said looped edge and for actuating said blade to shear said paste material for forming a complete gapless and overlap free bead of said paste material around said looped edge; and a conditioning chamber interposed between said outlet and said looped edge for forming a backpressure in said conditioning chamber and for dispensing a high viscous paste material onto said looped edge.
Claim 2
Dependent Claim
128 words
In an apparatus for dispensing paste material through an outlet of a hopper onto a looped edge of an object rotating beneath said hopper as an auger pushes said paste material from said hopper onto said edge, a blade for shearing said paste material upon the completion of a loop around said looped edge, improvements comprising: means for sensing the beginning of said paste material on said looped edge and for actuating said blade to shear said paste material for forming a complete gapless and overlap free bead of said paste material around said looped edge; and a conditioning chamber interposed between said outlet and said looped edge for forming a backpressure in said conditioning chamber and for dispensing a high viscous paste material onto said looped edge.
Claim 3
Dependent Claim
32 words
The improvements of claim 1 wherein said conditioning chamber is conical having a wide opening in the proximity of said outlet and an outlet orifice in the proximity of said looped edge.
Claim 4
Dependent Claim
25 words
The improvements of claim 2 wherein said auger has a thread pitch equal to at least fifty percent of the root diameter of said auger.
Claim 5
Dependent Claim
32 words
The improvement of claim 2 wherein said auger has a thread spiral disposed at an angle of at least 12° with respect to the normal to the longitudinal axis of said auger.
Claim 6
Dependent Claim
25 words
The improvements of claim 1 wherein said auger has a thread pitch equal to at least fifty percent of the root diameter of said auger.
Claim 7
Dependent Claim
29 words
The improvement of claim 1 wherein said auger has a thread spiral disposed at an angle of at least 12° with respect to the longitudinal axis of said auger.
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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) | 1991-09-27 | 1992-03-28 | 1992-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-27 | 1996-03-28 | 1996-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-27 | 2000-03-28 | 2000-09-27 | $7700.00 | Window Closed / Lapsed |