US3617049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet feeding apparatus
Assignee: TESTONE ELECTROSTATICS CORP
•
Filing: 1969-10-14
•
Granted: 1971-11-02
•
Expires: 1989-10-14
Abstract
Abstract Sheet-feeding apparatus including suction cups for lifting a portion of a top sheet of a stack, and moving it laterally, and a presser foot for pressing on the remaining stack, and for blowing ionized air into the space between the top sheet and the next sheet. The presser foot has air passages through it, and an ion generator including concentric arcuate elements of insulating material with a conductive foil between them, and ionizing points extending into the presser foot from the foil.
Inventors
- 👤 Anthony Q Testone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:07
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/46; B65H3/48; B65H3/18
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
63 words
Sheet-feeding apparatus comprising: means for supporting a stack of sheets, means for lifting the uppermost sheet and for moving said sheet transversely of said stack, presser means for pressing downwardly of the stack of sheets beneath said uppermost sheet, air passage means in said presser means extending to a surface of said presser means, and ion-generating means extending into said air passage means.
Claim 2
Dependent Claim
63 words
Sheet-feeding apparatus comprising: means for supporting a stack of sheets, means for lifting the uppermost sheet and for moving said sheet transversely of said stack, presser means for pressing downwardly of the stack of sheets beneath said uppermost sheet, air passage means in said presser means extending to a surface of said presser means, and ion-generating means extending into said air passage means.
Claim 3
Dependent Claim
20 words
Sheet-feeding apparatus in accordance with claim 1, said generating means comprising ionizing point means extending into said air passage means.
Claim 4
Dependent Claim
70 words
In sheet-feeding apparatus, a presser member having a bottom surface usable for pressing on a stack of sheets, an air passage in said presser member extending to a face thereof and having at least a portion thereof generally parallel to said bottom surface for discharging air generally parallel to said bottom surface, and ion-generating means extending into said air passage, whereby air-containing ions may be discharged from said presser member.
Claim 5
Dependent Claim
70 words
In sheet-feeding apparatus, a presser member having a bottom surface usable for pressing on a stack of sheets, an air passage in said presser member extending to a face thereof and having at least a portion thereof generally parallel to said bottom surface for discharging air generally parallel to said bottom surface, and ion-generating means extending into said air passage, whereby air-containing ions may be discharged from said presser member.
Claim 6
Dependent Claim
34 words
The apparatus of claim 3, said presser member having a tubular surface, arcuate support means engaging at least part of said tubular surface, said ion-generating means comprising ionizing points supported by said support means.
Claim 7
Dependent Claim
32 words
The presser member of claim 4, said arcuate means being of nonconductive material having a conductive element therewithin, said ionizing point means extending from said arcuate means and engaging said conductive element.
Claim 8
Dependent Claim
112 words
The presser foot of claim 3, said last-mentioned means comprising a first arcuate element of insulating material, a second arcuate element of insulating material having the outer diameter thereof of substantially the same size as and in substantial engagement with the inner diameter of said first member, a conductive sheet intermediate said arcuate elements and spaced from the exterior surfaces thereof, an ionizing point having its base in engagement with said conductive sheet and extending through said second element, said presser member having a tubular surface with a transverse opening therethrough, communicating said tubular surface with a said air passage, said ionizing point extending through said opening and into said air passage.
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) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |