发明名称 Universal spot bowling aid
摘要 A bowling aid comprises a first and second planar member, each member having a channel extending thereacross, means for positioning said planar members one above the other with said channels positioned in congruency and facing each other to form a relatively lateral opening, a slidable member positioned in said opening and adapted to slide therein, first and second lever members pivotally secured to said slideable member and extending transverse to the same, wherein said first and second levers can pivot either integrally or independent of each other with respect to said slideable member, and one of said surfaces of said planar members including indicia at a top end thereof indicative of the formation of ten bowling pins, each of which can be accessed by the pivoting of said first lever, and a series of second indicia located above said slideable member indicative of conventional alley markers, and a series of third indicia relatively at said other end of said surface indicative of conventional starting markers used by a bowler to commence his approach to the foul line, said second lever adapted when pivoted to access any one of said third indicia, to cause said first lever when pivoted, to access a desired bowling pin location, with said second lever accessing a desired starting location, whereby when said slideable member is moved, said first and second lever members move accordingly to indicate any desired starting position in relation to any desired pin which may be a target for said bowler.
申请公布号 US3995377(A) 申请公布日期 1976.12.07
申请号 US19760658337 申请日期 1976.02.13
申请人 GROLLMUSZ, JOHN 发明人 GROLLMUSZ, JOHN
分类号 A63B69/00;A63D1/06;A63D5/00;(IPC1-7):G09B9/00 主分类号 A63B69/00
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