Motor-operated fastener driving machine with movable anvil
AssigneeSwingline Inc.
InventorPaul Olesen
Life of this patent
Estimating the term…
Abstract
A low-electric-current-demand stapler is disclosed. The stapler has a frame upon which is mounted a fastener driver mechanism including a fastener driving blade and drive unit, a blade drive-control unit including spaced-apart frame pieces mounted on the frame, a rotary driven wheel mounted on the drive-control unit, and an electric motor powered transmission apparatus for transmitting the rotary motion of the motor to the driven wheel.
Claims10
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 improving comprising
- drive-control means also mounted on the base about pivot means for movement with respect to the base to cause the fastener driving mechanism to drive the fastener against the anvil;
- rotary drive means mounted on the drive-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 arm means including eyelet means for surrounding and engaging the eccentric means;
- transmission means (66,63) connected to the rotary drive means (68) for causing the drive-control means (50) carrying such shaft means (62) to move through a cycle of movement including a reciprocating path (A);
- and
- fastener mechanism means (55) on the drive-control means (50) slidably engageable with the fastener driving mechanism (17, 43) which engagement means (55) causes at times the fastener mechanism (I7, 43) to be driven downwardly and at other times causes the drive-control means to move the fastener mechanism upwardly.
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.
Dependencies are inferred from the claim text.