Back to results
US 2006/0213950 A1Published application
Spring energized desktop stapler
OwnerJoel Marksinventor
Life of this patent
Estimating the term…
Abstract
A desktop stapler includes an automatic opening staple track whereby when the stapler is opened by pivoting the body about the base, the track is de-latched by ribs of the base, and the track slides out from a chamber within the body. The stapler includes a track alignment system that holds the front of the body precisely over the anvil by use of forward and rear torque arm contact areas between the base and track. The stapler also features a striker bottom edge that is shaped to follow the curved shape of the anvil so that the striker may enter the anvil recess without impacting the anvil. A staple chamber in the stapler has staple exit ribs that allow only one staple at a time to be ejected from the staple chamber.
Claims21
A desktop stapler, comprising:
- an elongated base;
- a body pivotably attached to the base toward a rear end of the stapler having a closed stapler position wherein the base and the body extend forward from the pivotal attachment in a parallel and spaced relationship between the base and the body;
- the base includes a main component and a cover plate defining a top surface of the base, the cover plate being attached to the main component, and the cover plate being made from a sheet metal material;
- a spacer spring cut out from the cover plate, cantilevered from the cover plate and extending forward to a distal end above the cover plate, the spacer spring being rigidly attached to the cover plate at an attaching end with respect to a lateral direction, whereby the distal end is fixed laterally above the cover plate;
- a staple track at a bottom of the body having an elongated opening;
- a tab on the distal end of the spacer spring closely engaging the elongated opening in the staple track so that the spacer spring tab slides within the elongated opening as the body is forced toward the base and the spacer spring deflects toward the cover plate;
- a moment arm defined by a distance between the distal end of the spacer spring and the pivotal attachment, the moment arm positioning a front of the body laterally over a front of the cover plate;
- and
- the spacer spring tab pressing laterally against the track opening with a force that is directly proportional to a lateral force applied to the stapler body.
6 more elements
A desktop stapler, comprising:
- an elongated base;
- a body hinged to the base at a rear end of the stapler;
- a handle pivoted to the body;
- a lever disposed inside the body and biased in a direction by a spring that is energized by pivoting the handle;
- a striker selectively linked to the lever and spring biased to accelerate toward the base;
- a cover plate disposed on top of the base;
- a spacer spring having a distal tab, cantilevered from a back end of the cover plate at the rear end of the stapler and extending forward at an upward angle;
- a staple track for feeding staples to be dispensed by the striker, disposed at a bottom of the body, wherein the staple track includes an elongated opening for slidably receiving the distal tab of the spacer spring therein;
- and
- a moment arm defined by a distance between the distal tab of the spacer spring and the body hinge, wherein the moment arm locates a front end of the body over a front of the cover plate.
7 more elements
A desktop stapler, comprising:
- an elongated base;
- a body hinged to the base and containing staples;
- a handle pivoted to the body;
- a striker moving in the body to expel a staple therefrom by impact blow;
- a means for selectively accelerating the striker toward the staples above the base, actuated by the handle;
- a spacer spring cantilevered from a back end of the base at the rear end of the stapler and extending forward at an upward angle;
- a staple track for feeding staples to be expelled by the striker disposed at a bottom of the body, wherein the staple track includes an elongated opening for tight lateral fitment of a free distal end of the spacer spring therein;
- and
- a moment arm spanning a distance between the free distal end of the spacer spring and the body hinge, wherein the moment arm restricts lateral movement of a front end of the body.
6 more elements
A desktop stapler, comprising:
- an elongated base;
- a body hinged to the base and containing staples;
- a handle pivoted to the body;
- a striker moving in the body to expel a staple therefrom by impact blow;
- a means for selectively accelerating the striker toward the staples above the base, actuated by the handle;
- a staple track for feeding staples to be expelled by the striker disposed at a bottom of the body;
- a spacer spring cantilevered from a back end of the base at the rear end of the stapler, a segment of the spacer spring extending forward at an upward angle toward a free distal end of the spacer spring, the free distal end being proximate to the track;
- and
- a moment arm spanning a distance between the free distal end of the spacer spring and the rear end of the stapler, wherein the moment arm maintains a rigid lateral connection between the body and the base.
6 more elements
Dependencies are inferred from the claim text.