Back to results
US 4,110,907 AGranted
Glass cutter
AssigneeCoats & Clark, Inc.
InventorsRuediger Einhorn, Lee Richard Chasen, Joseph Walter Blake, III
Life of this patent
Estimating the term…
Abstract
A glass cutter having a cutting wheel rotatably mounted at one end thereof. A cutting fluid reservoir is situated within the tool housing at the end remote from the cutting wheel. The cutting wheel is mounted on a support member which is spring biased to provide a constant cutting pressure. A part of the wheel supporting member cooperates with the interior of the housing to form a valve which allows cutting fluid to flow through the wheel when the wheel is displaced against the action of the spring toward the housing during a cutting operation. A wheel cover pivotably mounted to the housing adjacent the cutting wheel has a closed position in which it protects the cutting wheel, and an open position in which the cover acts as a cutting guide.
Claims23
A glass cutter, comprising:
- an elongated housing;
- a longitudinally movable cutting wheel supporting member mounted within said housing adjacent one end thereof;
- a cutting wheel rotatably mounted on said member;
- a fluid reservoir disposed within said housing;
- spring means for biasing said supporting member toward said one end of said housing;
- valve means disposed within said housing between said reservoir and said wheel for causing fluid within said reservoir to flow to said wheel in response to longitudinal movement of said member toward the other end of said housing;
- and
- a cutting wheel cover pivotally mounted to said housing adjacent said one end thereof, said cover having (i) an open position in which a surface of said cover is essentially perpendicular to the plane of said wheel, and (ii) a closed position in which a protective portion of said cover is longitudinally aligned with said housing to protect said wheel.
5 more elements
A glass cutter, comprising:
- an elongated housing;
- a longitudinally movable cutting wheel supporting member mounted within said housing adjacent one end thereof;
- a cutting wheel rotatably mounted on said member;
- a fluid reservoir disposed in said housing, said reservoir comprising a translucent tubular element and said housing having at least one elongated slot therein adjacent said element, so that at least a portion of said reservoir is visible from the exterior of said housing to indicate the amount of fluid remaining in said reservoir;
- spring means for biasing said supporting member toward said one end of said housing;
- and
- valve means disposed within said housing between said reservoir and said wheel for causing fluid within said reservoir to flow to said wheel in response to longitudinal movement of said member toward the other end of said housing.
4 more elements
A glass cutter, comprising:
- an elongated housing;
- a longitudinally movable cutting wheel supporting member mounted within said housing adjacent one end thereof;
- a cutting wheel rotatably mounted on said member;
- a fluid reservoir disposed in said housing;
- spring means for biasing said supporting member toward said one end of said housing;
- valve means disposed within said housing between said reservoir and said wheel for causing fluid within said reservoir to flow to said wheel in response to longitudinal movement of said member toward the other end of said housing;
- and
- a cutting wheel cover pivotally mounted to said housing adjacent said one end thereof, said cover having a hole therein adjacent the pivot axis, said cover having an open position in which said cutting wheel extends through said hole and a surface of said cover adjacent said wheel is essentially perpendicular to the plane of the wheel.
5 more elements
A glass cutter, comprising:
- an elongated housing;
- a longitudinally movable cutting wheel supporting member mounted within said housing adjacent one end thereof;
- a cutting wheel rotatably mounted on said member;
- spring means for biasing said supporting member toward said one end of said housing;
- and
- a cutting wheel cover pivotally mounted to said housing adjacent said one end thereof, said cover having (i) an open position is which a glass-engaging surface of said cover is essentially perpendicular to the longitudinal axis of said housing and to the plane of said wheel and a guide surface of said cover is perpendicular to the plane of said glass-engaging surface and parallel to the plane of said cutting wheel, and (ii) a closed positioned in which a protective portion of said cover is longitudinally aligned with said housing to protect said wheel, so that said cover acts as a cutting guide in said open position.
3 more elements
A glass cutter, comprising:
- an elongated housing;
- a longitudinally movable cutting wheel supporting member mounted within said housing adjacent one end thereof;
- a cutting wheel rotatably mounted on said member;
- a fluid reservoir disposed in said housing;
- spring means for biasing said supporting member toward said one end of said housing;
- and
- valve means disposed within said housing between said reservoir and said wheel for causing fluid within said reservoir to flow to said wheel in response to longitudinal movement of said member toward the other end of said housing, said valve means comprising a valve seat consisting of an interior shoulder portion of said housing and a valve piston integral with said cutting wheel supporting member.
4 more elements
A glass cutter, comprising:
- an elongated housing,
- a longitudinally movable cutting wheel supporting member mounted within said housing adjacent one end thereof;
- a cutting wheel rotatably mounted on said member;
- spring means for biasing said supporting member toward said one end of said housing;
- and
- a cutting wheel cover pivotally mounted to said housing adjacent said one end thereof, said cover having (i) an open position in which a surface of said cover is essentially perpendicular to the plane of said wheel, (ii) a closed position in which a protective portion of said cover is longitudinally aligned with said housing to protect said wheel, and (iii) a part thereof which coacts with the adjacent end of said wheel supporting member to provide a detent action for retaining said cover in said closed position, said wheel supporting member being urged toward said cover by said spring means.
3 more elements
Dependencies are inferred from the claim text.