US4146323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auger for a development system
Assignee: Xerox Corp
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Filing: 1977-06-29
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Granted: 1979-03-27
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Expires: 1997-06-29
Abstract
Abstract An auger for use in a xerographic development system comprising an elongated twisted unitary strip of sheet metal, defined by two helically contoured edges extending along the longitudinal axis of the auger. The auger contains a series of spaced apart slots or recesses along the outer periphery of the helical edges, the slots extending inwardly a short distance from the edges toward the axis of the auger.
Inventors
- 👤 John E. Forward
- 👤 Raymond C. Coleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:08
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0822
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
84 words
In a xerographic system including means for depositing developer material on an imaging surface having an electrostatic latent image thereon, an improved auger for mixing said developer material comprising a unitary twisted piece of sheet metal having two outer edges, each edge defined by series of peripheral segments separated from each other by arcuate segments, said peripheral segments approximating straight line elements variably angulated to trace a generally helical path along the periphery of said auger and said arcuate segments forming approximately V-shaped slots.
Claim 2
Dependent Claim
84 words
In a xerographic system including means for depositing developer material on an imaging surface having an electrostatic latent image thereon, an improved auger for mixing said developer material comprising a unitary twisted piece of sheet metal having two outer edges, each edge defined by series of peripheral segments separated from each other by arcuate segments, said peripheral segments approximating straight line elements variably angulated to trace a generally helical path along the periphery of said auger and said arcuate segments forming approximately V-shaped slots.
Claim 3
Dependent Claim
24 words
The system as defined in claim 1 wherein said auger has front and rear planar sections adapted to be rotated by a drive mechanism.
References Cited (Backward Citations)
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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) | 1982-03-26 | 1982-09-25 | 1983-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-26 | 1986-09-25 | 1987-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-26 | 1990-09-25 | 1991-03-27 | $7700.00 | Window Closed / Lapsed |