# US 9,039,043 B2 · Ice skate blade guard with safety feature > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,039,043 B2 - Document ID: US9039043B2 - Status: Granted - Kind: B2 - Application number: 14/214,874 - Filed: 2014-03-15 - Published: 2014-11-20 - Granted: 2015-05-26 - Earliest claimed: 2013-03-15 - Applicants: Larry Schoenike - Inventors: Larry Schoenike - Web page: https://patentgrep.com/patent/US9039043B2 ## CPC - A63C 3/12: Guards for skate blades - A63C: SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE (water skis B63B32/00, B63B34/00) ## Abstract An ice skate blade guard comprises a device for limiting/preventing falls and injury on the ice when skate blade guards are inadvertently left on when the skater enters the ice. At least one longitudinally-extending bar, blade, or other member provided on the bottom of the guard is sufficiently narrow, sharp, and/or with sharp or biting side edge(s) to bite-into the ice, upon incipient sideways movement, due to the member(s) being biased against the ice and/or due to weight of the wearer. The member(s) prevent sideways slipping, but allow forward movement. The slip-prevention member(s) may be movable in/on the guard and biased downward relative to the main body. In some versions, the slip-prevention blade(s) are fixed to the guard, rigidly and non-movably protruding from the bottom of the guard. ## Claims ### Claim 1 An ice skate blade guard for limiting or preventing sideways slipping when the guard remains on a skate when a wearer moves onto ice, the guard comprising: an elongated main body having a length, a bottom surface, and an interior longitudinal space with a top opening for receiving at least a portion of a skate blade for protecting the skate blade; and a slip-prevention system connected to the main body and comprising at least one elongated element parallel to the length of the main body and extending below said bottom surface, for biting into ice at or near beginning of movement of the guard on ice transverse to the length of the main body; wherein said at least one elongated element is a dual-blade unit having a main plate generally parallel to the bottom surface and two parallel slip-prevention blades extending down from the main plate. ### Claim 2 (depends on 1) An ice skate blade guard as in claim 1, wherein said two parallel slip-prevention blades extend down from the main plate at or near opposite edges of said bottom surface. ### Claim 3 (depends on 1) An ice skate blade guard as in claim 1, wherein the dual-blade unit is slidably mounted in a recess in the bottom surface and is biased to slide downward relative to the main body. ### Claim 4 (depends on 3) An ice skate blade guard as in claim 3, wherein the dual-blade unit is biased by a spring between the main plate and a top surface of said recess that pushes the dual-blade unit away from said top surface. ### Claim 5 (depends on 4) An ice skate blade guard as in claim 4, further comprising a cushion between the top surface and the main plate. ### Claim 6 (depends on 1) An ice skate blade guard as in claim 1, wherein the dual-blade unit main plate is fastened to the main body in a recess in the bottom surface, and the dual-blade unit is not moveable relative to the main body. ### Claim 7 (depends on 1) An ice skate blade guard as in claim 1, wherein said at least one element is longitudinally smooth for gliding on ice in a forward direction parallel to the length of the main body of the guard. ### Claim 8 An ice skate blade guard for limiting or preventing sideways slipping when the guard remains on a skate when a wearer moves onto ice, the guard comprising: an elongated main body having a length, a bottom surface, and an interior longitudinal space with a top opening for receiving at least a portion of a skate blade for protecting the skate blade; and a slip-prevention system connected to the main body and comprising at least one elongated element parallel to the length of the main body and extending below said bottom surface, for biting into ice at or near beginning of movement of the guard on ice transverse to the length of the main body; wherein said at least one elongated element comprises multiple dual-blade units spaced along the length of the main body, each dual-blade unit comprising a main plate generally parallel to the bottom surface and two parallel slip-prevention blades extending down from the main plate. ### Claim 9 (depends on 8) An ice skate blade guard as in claim 8, wherein each dual-blade unit is slidably mounted in a recess in the bottom surface and is biased to slide downward relative to the main body. ### Claim 10 (depends on 8) An ice skate blade guard as in claim 8, wherein the dual-blade unit main plate is fastened to the main body in a recess in the bottom surface, and the dual-blade unit is not moveable relative to the main body. ### Claim 11 (depends on 9) An ice skate blade guard as in claim 9, wherein each dual-blade unit is biased by a spring between the main plate and a top surface of said recess that pushes the dual-blade unit away from the top surface. ### Claim 12 (depends on 11) An ice skate blade guard as in claim 11, further comprising a cushion between the top surface and the main plate of each dual-blade unit. ### Claim 13 (depends on 8) An ice skate blade guard as in claim 8, wherein said two parallel slip-prevention for gliding on ice in a forward direction parallel to the length of the main body of the guard. ### Claim 14 An ice skate blade guard adapted for limiting or preventing falls when a wearer fails to remove the guard before moving onto ice, the guard comprising: an elongated main body having a broad bottom surface with a length and a transverse width, and an interior longitudinal space with a top opening for receiving at least a portion of a skate blade for protecting the skate blade; and a slip-prevention system connected to the main body and comprising multiple, rigid, depending blades having lengths parallel to the length of the main body and each having a lowermost extremity that extends below said bottom surface of the main body, for biting into ice at or near beginning of transverse movement of the guard and skate relative to ice to prevent a wearer from falling; wherein each depending blade has a thickness, transverse to the length of the blade, that is less than 1/20 of the width of said bottom surface; and wherein the depending blades are slidably connected to the main body and biased to slide downward relative to the main body so that the lowermost extremities of the blades extend 1/16-1 inch below the bottom surface. ### Claim 15 (depends on 14) An ice skate blade guard as in claim 14, wherein the broad bottom surface of the main body has a total surface area that is 7 to 20 times the total surface area of the lowermost extremity of the blades. ### Claim 16 (depends on 14) An ice skate blade guard as in claim 14, wherein the broad bottom surface of the main body has a total surface area that is more than 20 times the total surface area of the lowermost extremity of the blades. ### Claim 17 An ice skate blade guard adapted for limiting or preventing falls when a wearer fails to remove the guard before moving onto ice, the guard comprising an elongated main body having a broad bottom surface with a length and a transverse width, and an interior longitudinal space with a top opening for receiving at least a portion of a skate blade for protecting the skate blade; and a slip-prevention system connected to the main body and comprising multiple, rigid, depending blades having lengths parallel to the length of the main body and each having a lowermost extremity that extends below said bottom surface of the main body, for biting into ice at or near beginning of transverse movement of the guard and skate relative to ice to prevent a wearer from falling; wherein each depending blade has a thickness, transverse to the length of the blade, that is less than 1/20 of the width of said bottom surface; and wherein the multiple depending blades are fastened to the main body in a recess in the bottom surface, the multiple depending blades are not moveable relative to the main body, and wherein the lowermost extremities of the blades extend 1/16-1 inch below the bottom surface. ### Claim 18 (depends on 17) An ice skate blade guard as in claim 17, wherein the broad bottom surface of the main body has a total surface area that is 7 to 20 times the total surface area of the lowermost extremity of the blades. ### Claim 19 (depends on 17) An ice skate blade guard as in claim 17, wherein the broad bottom surface of the main body has a total surface area that is more than 20 times the total surface area of the lowermost extremity of the blades.