Patent US4918534A successfully refreshed from Google Patents.
US4188907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Particle dispenser with a magnetically driven agitator
Assignee: Xerox Corp
•
Filing: 1977-08-11
•
Granted: 1980-02-19
•
Expires: 1997-08-11
Abstract
Abstract An apparatus in which particles are dispensed from an open-ended chamber. An oscillatory magnetic field vibrates a magnetic member at least partially immersed in the particles. This prevents bridging and caking of the particles to facilitate flow of the particles from the open end of the chamber.
Inventors
- 👤 Anthony F. Lipani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:32
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/09; G03G15/0822; G03G15/0877; G03G15/0887; Y; Y10; Y10S; Y10S222/00; Y10S222/01
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
100 words
An apparatus for dispensing particles, including: means, defining an open ended chamber, for storing a supply of particles therein; a magnetic member mounted movably in the chamber of said storing means and having a portion thereof engaging the particles; a roller having at least a pair of magnetic poles of opposed polarity impressed on the circumferential surface thereof; and means for rotating said roller to produce an oscillatory magnetic field for vibrating said magnetic member to prevent bridging and caking of the particles, thereby facilitating flow of the particles from the open end of the chamber of said storing means.
Claim 2
Independent Claim
100 words
An apparatus for dispensing particles, including: means, defining an open ended chamber, for storing a supply of particles therein; a magnetic member mounted movably in the chamber of said storing means and having a portion thereof engaging the particles; a roller having at least a pair of magnetic poles of opposed polarity impressed on the circumferential surface thereof; and means for rotating said roller to produce an oscillatory magnetic field for vibrating said magnetic member to prevent bridging and caking of the particles, thereby facilitating flow of the particles from the open end of the chamber of said storing means.
Claim 3
Dependent Claim
32 words
An apparatus as recited in claim 1, wherein said magnetic member includes a plate comprising a multiplicity of spaced strips extending substantially parallel to one another from a common marginal portion thereof.
Claim 4
Dependent Claim
22 words
An apparatus as recited in claim 2, wherein said magnetic member includes means for securing slidably said plate to said storing means.
Claim 5
Dependent Claim
23 words
An apparatus as recited in claim 3, wherein said roller is mounted in the open end of the chamber of said storing means.
Claim 6
Independent Claim
98 words
An apparatus for developing a latent image recorded on a member, including: means, defining an open ended chamber, for storing a supply of particles therein; a magnetic member mounted movably in the chamber of said storing means and having a portion thereof engaging the particles; and unitary means, in communication with said storing means, for depositing particles on the latent image and for simultaneously generating an oscillatory magnetic field adjacent said magnetic member for vibrating said magnetic member to prevent bridging and caking of the particles flowing from the open end of the chamber of said storing means.
Claim 7
Independent Claim
98 words
An apparatus for developing a latent image recorded on a member, including: means, defining an open ended chamber, for storing a supply of particles therein; a magnetic member mounted movably in the chamber of said storing means and having a portion thereof engaging the particles; and unitary means, in communication with said storing means, for depositing particles on the latent image and for simultaneously generating an oscillatory magnetic field adjacent said magnetic member for vibrating said magnetic member to prevent bridging and caking of the particles flowing from the open end of the chamber of said storing means.
Claim 8
Independent Claim
115 words
An apparatus for developing a latent image recorded on a member, including: means, defining an open ended chamber, for storing a supply of particles therein; a magnetic member mounted movably in the chamber of said storing means and having a portion thereof engaging the particles; a roller having at least a pair of magnetic poles of opposed polarity impressed on the circumferential surface thereof, said roller being positioned closely adjacent to the latent image for depositing particles thereon; and means for rotating said roller to produce an oscillatory magnetic field for vibrating said magnetic member to prevent bridging and caking of the particles flowing from the open end of the chamber of said storing means.
Claim 9
Independent Claim
115 words
An apparatus for developing a latent image recorded on a member, including: means, defining an open ended chamber, for storing a supply of particles therein; a magnetic member mounted movably in the chamber of said storing means and having a portion thereof engaging the particles; a roller having at least a pair of magnetic poles of opposed polarity impressed on the circumferential surface thereof, said roller being positioned closely adjacent to the latent image for depositing particles thereon; and means for rotating said roller to produce an oscillatory magnetic field for vibrating said magnetic member to prevent bridging and caking of the particles flowing from the open end of the chamber of said storing means.
Claim 10
Dependent Claim
32 words
An apparatus as recited in claim 6, wherein said magnetic member includes a plate comprising a multiplicity of spaced strips extending substantially parallel to one another from a common marginal portion thereof.
Claim 11
Dependent Claim
22 words
An apparatus as recited in claim 7, wherein said magnetic member includes means for securing slidably said plate to said storing means.
Claim 12
Dependent Claim
23 words
An apparatus as recited in claim 8, wherein said roller is mounted in the open end of the chamber of said storing means.
Claim 13
Dependent Claim
107 words
An electrophotographic printing machine of the type having an electrostatic latent image recorded on a photoconductive member, wherein the improvement includes: means, defining an open ended chamber, for storing a supply of particles therein; a magnetic member mounted movably in the chamber of said storing means and having a portion thereof engaging the particles; and unitary means, in communication with said storing means, for depositing particles on the latent image and for simultaneously generating an oscillatory magnetic field adjacent said magnetic member for vibrating said magnetic member to prevent bridging and caking of the particles flowing from the open end of the chamber of said storing means.
Claim 14
Dependent Claim
107 words
An electrophotographic printing machine of the type having an electrostatic latent image recorded on a photoconductive member, wherein the improvement includes: means, defining an open ended chamber, for storing a supply of particles therein; a magnetic member mounted movably in the chamber of said storing means and having a portion thereof engaging the particles; and unitary means, in communication with said storing means, for depositing particles on the latent image and for simultaneously generating an oscillatory magnetic field adjacent said magnetic member for vibrating said magnetic member to prevent bridging and caking of the particles flowing from the open end of the chamber of said storing means.
Claim 15
Dependent Claim
127 words
An electrophotographic printing machine of the type having an electrostatic latent image recorded on a photoconductive member, wherein the improvement includes: means, defining an open ended chamber, for storing a supply of particles therein; a magnetic member mounted movably in the chamber of said storing means and having a portion thereof engaging the particles; a roller having at least a pair of magnetic poles of opposed polarity impressed on the circumferential surface thereof, said roller being positioned closely adjacent to the photoconductive member for depositing particles on the latent image; and means for rotating said roller to produce an oscillatory magnetic field for vibrating said magnetic member to prevent bridging and caking of the particles flowing from the open end of the chamber of said storing means.
Claim 16
Dependent Claim
127 words
An electrophotographic printing machine of the type having an electrostatic latent image recorded on a photoconductive member, wherein the improvement includes: means, defining an open ended chamber, for storing a supply of particles therein; a magnetic member mounted movably in the chamber of said storing means and having a portion thereof engaging the particles; a roller having at least a pair of magnetic poles of opposed polarity impressed on the circumferential surface thereof, said roller being positioned closely adjacent to the photoconductive member for depositing particles on the latent image; and means for rotating said roller to produce an oscillatory magnetic field for vibrating said magnetic member to prevent bridging and caking of the particles flowing from the open end of the chamber of said storing means.
Claim 17
Dependent Claim
33 words
A printing machine as recited in claim 11, wherein said magnetic member includes a plate comprising a multiplicity of spaced strips extending substantially parallel to one another from a common marginal region thereof.
Claim 18
Dependent Claim
23 words
A printing machine as recited in claim 12, wherein said magnetic member includes means for securing slidably said plate to said storing means.
Claim 19
Dependent Claim
24 words
A printing machine as recited in claim 13, wherein said roller is mounted in the open end of the chamber of said storing means.
References Cited (Backward Citations)
US2166671A
Cited
US2892446A
Cited
US3200997A
Cited
US3179302A
Cited
US3462285A
Cited
US3534914A
Cited
US3572555A
Cited
DE2166667A1
Cited
US3661302A
Cited
US3806003A
Cited
US4054270A
Cited
US3987967A
Cited
US4090263A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-02-18 | 1983-08-20 | 1984-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-18 | 1987-08-20 | 1988-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-18 | 1991-08-20 | 1992-02-19 | $7700.00 | Window Closed / Lapsed |