EP0245086A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Motor-operated fastener driving machine
Assignee: Acco Brands USA LLC
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Filing: 1987-05-05
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Granted: —
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Expires: 2007-05-05
Abstract
Abstract A low-current demand motor-driven stapling machine (10) comprises a base (11) and a staple drive mechanism (17) including a staple driving blade (32) and a drive unit (31) of which movement is controlled by a blade-drive-control unit (50) pivotally supported on the base (11) by frame members (52, 53) and eccentric follower arms (56, 57). An electric motor (68) transmits drive through reduction gears to a driven wheel (63) of the drive control unit (50). Driven wheel (63) drives a shaft (62) eccentrically mounting discs (59, 61) which cooperate with follower arms (56, 57) to cause the blade-drive-control unit (50) to rock back and forth in an arcuate path above the base (11) in order to operate the drive unit (31) through engagement between an actuating channel member (71) and a plunger head (38) of the drive unit (31).
Inventors
- 👤 Paul Oleson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 17:22
CPC Classifications
B; B25; B25C; B25C1/00; B25C1/06; B27; B27F; B27F7/00; B27F7/17; B27F7/19; B27F7/21; B27F7/23; B27F7/30; B27F7/36
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
192 words
In a motor-driven fastener machine having a base, an anvil on the base, a fastener driving mechanism mounted for movement relative to the base, the improvement comprising driving and control means also mounted on the base for relative movement with the base to cause the fastener driving mechanism to drive the fastener against the anvil; rotary drive means mounted on the driving and control means such rotary drive means including eccentric means carrying shaft means; follower arm means mounted between (1) the base about a second pivot means spaced from the first pivot means, and (2) the rotary drive means such arms means including eyelet means for surrounding and engaging the eccentric means; transmission means connected to the rotary drive means for causing the driving and control means carrying such shaft means to move through a cycle of movement including a reciprocating path; and fastener mechanism engagement means on the driving and control means slidably engageable with the fastener driving mechanism which engagement means causes at times the fastener mechanism to drive the fastener mechanism downwardly and at other times causes the driving and control means to move the fastener mechanism upwardly.
Claim 2
Dependent Claim
87 words
The fastener machine of claim 1 in which the rotary drive means includes a driven wheel and in which the dumbbell means comprises in turn (1) shaft means secured to the driven wheel and (2) two spaced apart cylindrical elements secured in an offset manner to the shaft means and in which the follower arm dumbbell engaging means is a circular recessed opening for receiving one of the cylindrical elements whereby rotation of the driven wheel carries the circular elements around such shaft in an eccentric pattern.
Claim 3
Dependent Claim
38 words
The fastener machine of claim 1 in which the fastener driving mechanism includes a head workpiece compensation means which includes spring means which is compressible between the workpiece and the engagement means on the driving and control means.
Claim 4
Dependent Claim
30 words
The stapler machine of claim 1 in which the transmission means comprises a motor-driven shaft and spur gear which spur gear is engageable with the driven wheel and shaft means.
Claim 5
Dependent Claim
58 words
The motor-driven fastener machine of claim 1 in which the anvil is in turn mounted on an anvil plate means which plate means is pivotally mounted on the base and is caused to pivot from open to close position by cam means on the anvil plate means which cooperate with cam means on the driving and control means.
Claim 6
Dependent Claim
192 words
In a motor-driven staple machine having a base, an anvil on the base, a staple forming and driving mechanism pivotal on the base, the improvement comprising drive-control unit means mounted on the base about a first pivot means for causing the stapler forming and driving mechanism to form and drive the stapler against the anvil; rotary drive means mounted on the drive-control unit means such rotary drive means including dumbbell means carrying shaft means mounted on the drive-control unit means; follower arm means mounted between (1) the base about a second pivot means spaced from the first pivot means, and (2) the rotary drive means, such arm means including dumbbell engaging means; transmission means connected to the rotary drive means for causing the drive-control unit means to carry such shaft means to move pivotally through a cycle of movement including a reciprocating arcuate path; and slot channel means on the drive-control unit means slidably engageable with the staple mechanism which slot channel means causes at times the staple mechanism to drive the stapler mechanism downwardly and further at other times causes the driving and control means to move the staple mechanism upwardly.
Claim 7
Dependent Claim
84 words
The staple mechanism of claim 6 in which the rotary drive means includes a driven wheel and the dumbbell unit comprises in turn (1) shaft means secured to the wheel and (2) two spaced apart cylindrical elements secured in an offset manner to the shaft means and in which the follower arm dumbbell carrying means is a circular recessed opening for receiving one of the circular elements whereby rotation of the driven wheel carries the cylindrical elements around such shaft in an eccentric pattern.
Claim 8
Dependent Claim
36 words
The stapler machine of claim 6 in which the stapler driving mechanism includes a head workpiece compensation means which includes spring means which is compressible between the workpiece and the slot means on the drive-control unit.
Claim 9
Dependent Claim
15 words
The stapler machine of claim 6 having battery means for powering the motor driven shaft.
Claim 10
Dependent Claim
25 words
The stapler machine of claim 6 in which slot channel means is substantially horizontal in its upper position and below horizontal in its down position.
References Cited (Backward Citations)
No citation records indexed.
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