Conduit saw

Claim 1

A device for sawing conduit comprising in combination: jaw means including a first and a second jaw in apposition forming an elongated opening therebetween adapted to receive a conduit to be cut; a circular conduit saw blade; means comprising a saw blade holdEr upon which said saw blade is mounted for rotation about a predetermined axis of rotation, said holder being connected to said device for movement between a first position where said saw blade does not extend into said elongated opening and a second position where the saw blade extends into said elongated opening and into any conduit in said elongated opening; stop means on said device for selectively limiting the extent that said saw blade can move toward said second position, said stop means comprising: an elongated block mounted on said device for movement between a first position where the block is not engaged by said blade holder until said holder is in said second position and a second position where said saw blade holder engages the block before said saw blade holder reaches said second position of the blade holder in the travel of the holder from the first position to the second position.

Claim 2

A device for sawing conduit comprising in combination: jaw means including a first and a second jaw in apposition forming an elongated opening therebetween adapted to receive a conduit to be cut; a circular conduit saw blade; means comprising a saw blade holdEr upon which said saw blade is mounted for rotation about a predetermined axis of rotation, said holder being connected to said device for movement between a first position where said saw blade does not extend into said elongated opening and a second position where the saw blade extends into said elongated opening and into any conduit in said elongated opening; stop means on said device for selectively limiting the extent that said saw blade can move toward said second position, said stop means comprising: an elongated block mounted on said device for movement between a first position where the block is not engaged by said blade holder until said holder is in said second position and a second position where said saw blade holder engages the block before said saw blade holder reaches said second position of the blade holder in the travel of the holder from the first position to the second position.

Claim 3

A device for sawing electrical conduit comprising in combination: jaw means including a first and a second jaw in apposition forming an elongated opening therebetween adapted to receive a conduit to be cut; a circular conduit saw blade; means comprising a saw blade holder upon which said saw blade is mounted for rotation about a predetermined axis of rotation, said holder being hingedly connected to said first jaw for movement between a first position where said saw blade does not extend into said elongated opening and a second position where said saw blade extends into said elongated opening in any conduit in said elongated opening, said saw blade hold having a notch at a point spaced away from the point at which the holder is hinged to the first jaw; advancing means connected to said first jaw for resiliently urging saw blade holder and said saw blade from said first position toward said second position, said advancing means including: a post fixed to said first jaw and extending through said notch as said holder is moved between said first and said second positions, said notch having a cross dimension only slightly greater than said post in order that said post will stabilize said holder; a compression spring operatively connected to said post and engaging said holder at a first end of the spring and urging said holder toward said second position.

Claim 4

A device for sawing electrical conduit comprising in combination: jaw means including a first and a second jaw in apposition forming an elongated opening therebetween adapted to receive a conduit to be cut; a circular conduit saw blade; means comprising a saw blade holder upon which said saw blade is mounted for rotation about a predetermined axis of rotation, said holder being hingedly connected to said first jaw for movement between a first position where said saw blade does not extend into said elongated opening and a second position where said saw blade extends into said elongated opening in any conduit in said elongated opening, said saw blade hold having a notch at a point spaced away from the point at which the holder is hinged to the first jaw; advancing means connected to said first jaw for resiliently urging saw blade holder and said saw blade from said first position toward said second position, said advancing means including: a post fixed to said first jaw and extending through said notch as said holder is moved between said first and said second positions, said notch having a cross dimension only slightly greater than said post in order that said post will stabilize said holder; a compression spring operatively connected to said post and engaging said holder at a first end of the spring and urging said holder toward said second position.

Claim 6

a device for sawing electrical conduit comprising in combination: a first jaw and a second jaw disposed in a generally horizontal position; hinge means along a right edge of the jaws swingably connecting them together; said first and second jaws each having a centrally disposed recess extending parallel to said hinge means from a rear edge of each jaw to a front edge of each jaw to form an elongated opening having an axis extending generally parallel to said hinge means, said opening being adapted to receive therein a conduit to be clamped by said jaws when said jaws are clamped together; means for clamping said jaws together comprising: a hand heel section fixed to said first jaw and extending from the left side of said recess, said hand heel section has a longitudinal ridge projecting away from said finger section at a point to be received into the notch of a person''s hand formed at the joinder of the main muscle of the thumb and the palm of the hand; and a finger section fixed to said second jaw and extending from the left side of said recess; a circular conduit saw blade means comprising a saw blade holder hingedly connected to said first jaw for movement between a first position where said saw blade does not extend into said elongated opening and a second position where said saw blade extends well into said elongated opening and into any conduit held in said jaw; advancing means conNected to said first jaw for resiliently urging said saw blade holder and saw blade from said first position toward said second position; and means for rotating said saw blade.

Claim 7

a device for sawing electrical conduit comprising in combination: a first jaw and a second jaw disposed in a generally horizontal position; hinge means along a right edge of the jaws swingably connecting them together; said first and second jaws each having a centrally disposed recess extending parallel to said hinge means from a rear edge of each jaw to a front edge of each jaw to form an elongated opening having an axis extending generally parallel to said hinge means, said opening being adapted to receive therein a conduit to be clamped by said jaws when said jaws are clamped together; means for clamping said jaws together comprising: a hand heel section fixed to said first jaw and extending from the left side of said recess, said hand heel section has a longitudinal ridge projecting away from said finger section at a point to be received into the notch of a person''s hand formed at the joinder of the main muscle of the thumb and the palm of the hand; and a finger section fixed to said second jaw and extending from the left side of said recess; a circular conduit saw blade means comprising a saw blade holder hingedly connected to said first jaw for movement between a first position where said saw blade does not extend into said elongated opening and a second position where said saw blade extends well into said elongated opening and into any conduit held in said jaw; advancing means conNected to said first jaw for resiliently urging said saw blade holder and saw blade from said first position toward said second position; and means for rotating said saw blade.