US4151944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Staplers
Assignee: Xerox Corp
•
Filing: 1977-09-28
•
Granted: 1979-05-01
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Expires: 1997-09-28
Abstract
Abstract A stapler including a driver, a magazine for sticks of staples, and a staple feeder for feeding staple sticks from the magazine to the driver and biasing the stick into position for stapling, said feeder comprising an endless belt arranged frictionally to engage the crown of a said stick and means for driving the belt.
Inventors
- 👤 Stewart D. Picton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:39
CPC Classifications
B; B27; B27F; B27F7/00; B27F7/17; B27F7/38; B25; B25C; B25C5/00; B25C5/16; B25C5/1606; B25C5/1624; B25C5/1679
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
104 words
A stapler including a driver, a magazine for holding sticks of staples, and a staple feeder for feeding staple sticks from the magazine to the driver and biasing the stick into position for stapling, said feeder comprising: an endless belt arranged frictionally to engage the crown of said stick with said belt being arranged to slide on a staple stick while continuing to bias the stick into a stapling position; and means for driving said belt, said driving means including means for limiting the force applied in the feed direction so that said belt will stall while continuing to bias the stick into position.
Claim 2
Dependent Claim
104 words
A stapler including a driver, a magazine for holding sticks of staples, and a staple feeder for feeding staple sticks from the magazine to the driver and biasing the stick into position for stapling, said feeder comprising: an endless belt arranged frictionally to engage the crown of said stick with said belt being arranged to slide on a staple stick while continuing to bias the stick into a stapling position; and means for driving said belt, said driving means including means for limiting the force applied in the feed direction so that said belt will stall while continuing to bias the stick into position.
Claim 3
Dependent Claim
17 words
A stapler according to claim 1 in which the belt drive means includes an impedance limited motor.
Claim 4
Dependent Claim
19 words
A stapler according to claim 1 in which the belt drive means is operative to drive the belt intermittently.
Claim 5
Dependent Claim
20 words
A stapler according to claim 3 in which the belt drive is actuated in response to operation of the driver.
Claim 6
Dependent Claim
29 words
A stapler according to claim 1 including a rail for supporting the inside face of the staple stick crown and the belt engages the outside face of the crown.
Claim 7
Dependent Claim
15 words
A stapler according to claim 1 in which the belt is made of rubberized fabric.
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) | 1982-04-30 | 1982-10-30 | 1983-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-30 | 1986-10-30 | 1987-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-30 | 1990-10-30 | 1991-05-01 | $7700.00 | Window Closed / Lapsed |