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US 6,742,271 B1Granted
Retractable straightedge framing square integrable to a level
OwnerDonald Jeffrey Rushinginventor
Life of this patent
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Abstract
The invention is a masonry tool that is a framing square with a retractable straightedge, where the framing square can be fitted to a level. The major components of the invention are a foldable flat straightedge, a mounting bar and housing which seats a notched disk that rotates on an axial shaft that is joined to the straightedge, a finger activated switch that moves a spring loaded slideable pin that clicks into a notch on the disk corresponding to an angle, and fastening components and elements for longitudinally affixing the mounting bar and housing to the end of the level. The retractable straightedge, when unlocked, can be rotated from a retracted position to a reversibly locked right angle position, and vice versa.
Claims42
A framing square integral to a level comprising:
- a) an articulatable retractable straightedge that, when unlocked, can be rotated from a reversibly locked retracted position to a reversibly locked right angle position, and where, in the retracted position, a top surface of the articulatable retractable straightedge is substantially flush with an edge of a level and where, in the right angle position, a bottom surface of the articulatable retractable straightedge is orthogonal to the edge of the level;
- b) a housing for a rotatable lockable mechanism which enables rotation and locking of the articulatable retractable straightedge, where said rotatable lockable mechanism is joined to the articulatable retractable straightedge, wherein said housing has an oblique corner, and said oblique corner is fitted with a faux cover which is reversibly removable;
- c) a finger activated switch;
- and
- d) a level with a partially cutaway portion of the distal end of the level forming the side of the housing and an opposing side of the housing having at least one fastening component for affixing the opposing side of the housing to the level.
2 more elements
An integrable framing square for attachment to a level, comprising:
- a) an articulatable retractable straightedge that is reversibly rotatable from a retracted position to a pre-selected angled position;
- b) a mounting bar and integral housing having at least one fastening element for longitudinally affixing the housing to the end of a level, wherein the mounting bar has a facial surface that is undercut sufficient to accommodate the thickness of the retracted straightedge, so that so that a surface on the retractable straightedge is flush with the facial surface of the mounting bar;
- c) a rotatable lockable mechanism engaging the articulatable retractable straightedge that enables rotation and locking of the articulatable retractable straightedge in a desired orientation;
- d) locking means for locking and unlocking of the rotatable lockable mechanism, such that the articulatable retractable straightedge can, reversibly, be rotated from the locked retracted position to the locked angled position;
- e) fastening components for attaching the mounting bar to an edge side of the level;
- and
- whereby, when the articulatable retractable straightedge is attached to a level in the retracted position, a top surface of the articulatable retractable straightedge is substantially flush with or below an edge of the level.
4 more elements
An integrable framing square for attachment to a level, comprising:
- a) an articulatable retractable straightedge that is reversibly rotatable from a retracted position to a pre-selected angled position;
- b) a mounting bar and an integral housing having at least one fastening element for longitudinally affixing the housing to the end of a level, wherein said integral housing has an oblique corner, and said oblique corner is fitted with a faux cover which is reversibly removable;
- c) a rotatable lockable mechanism engaging the articulatable retractable straightedge that enables rotation and locking of the articulatable retractable straightedge in a desired orientation;
- d) locking means for locking and unlocking of the rotatable lockable mechanism, such that the articulatable retractable straightedge can, reversibly, be rotated from the locked retracted position to the locked angled position;
- e) fastening components for attaching the mounting bar to an edge side of the level;
- and
- whereby, when the articulatable retractable straightedge is attached to a level in the retracted position, a top surface of the articulatable retractable straightedge is substantially flush with or below an edge of the level.
4 more elements
An integrable framing square for attachment to a level, comprising:
- a) an articulatable retractable straightedge that is reversibly rotatable from a retracted position to a pre-selected angled position;
- b) a mounting bar and integral housing having at least one fastening element for longitudinally affixing the housing to the end of a level, wherein the mounting bar has a channel for accommodating the retractable straightedge and includes a means for forming a finger lift for initiating rotation of the retractable straightedge;
- c) a rotatable lockable mechanism engaging the articulatable retractable straightedge that enables rotation and locking of the articulatable retractable straightedge in a desired orientation;
- d) locking means for locking and unlocking of the rotatable lockable mechanism, such that the articulatable retractable straightedge can, reversibly, be rotated from the locked retracted position to the locked angled position;
- e) fastening components for attaching the mounting bar to an edge side of the level;
- and
- whereby, when the articulatable retractable straightedge is attached to a level in the retracted position, a top surface of the articulatable retractable straightedge is substantially flush with or below an edge of the level.
4 more elements
Dependencies are inferred from the claim text.