US3982472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Envelope machine with window patch removal mechanism
Assignee: HOWATT GEORGE F CHAPIN ROAD HOLDEN MASS
•
Filing: 1975-01-24
•
Granted: 1976-09-28
•
Expires: 1995-01-24
Abstract
Abstract Envelope machine of the window-applicator type and means for avoiding application of gum to window when envelope blank is missing and to dispose of the window under similar circumstances.
Inventors
- 👤 George F. Howatt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:33
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/74; B31B70/81; B31B70/82; B31B70/826; B31B2150/00; B31B2160/00; B31B2160/10; B31B2160/104
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
An envelope machine, comprising: a. an elongated frame, b. a conveyor mounted in the frame for carrying longitudinally of the frame envelope blanks having window openings, c. a window applicator mounted on the frame above the conveyor and spaced upstream a substantial distance from the discharge end of the conveyor, the window applicator dropping a window patch toward the conveyor irrespective of whether an envelope blank is present or not, d. a roller forming a part of the conveyor at the discharge end and having suction passages, and e. means operative when an envelope blank is missing to apply suction to the roller to carry a window patch around the roller to the underside of the conveyor.
Claim 2
Dependent Claim
117 words
An envelope machine, comprising: a. an elongated frame, b. a conveyor mounted in the frame for carrying longitudinally of the frame envelope blanks having window openings, c. a window applicator mounted on the frame above the conveyor and spaced upstream a substantial distance from the discharge end of the conveyor, the window applicator dropping a window patch toward the conveyor irrespective of whether an envelope blank is present or not, d. a roller forming a part of the conveyor at the discharge end and having suction passages, and e. means operative when an envelope blank is missing to apply suction to the roller to carry a window patch around the roller to the underside of the conveyor.
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) | 1979-09-28 | 1980-03-29 | 1980-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-28 | 1984-03-29 | 1984-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-28 | 1988-03-29 | 1988-09-28 | $7700.00 | Window Closed / Lapsed |