Mower deck height adjustment device

Abstract

An adjustment pin for making precision adjustments to the cutting deck height of a lawn mower having a cutting deck height adjustment mechanism that employs a lever, a lever support bracket having lever set holes. The adjustment pin has an elongated stem of a uniform diameter. Disposed along the stem of the pin is a plurality of pin adjustment portions. These adjustment portions each have a successively reduced diameter with respect to the pin stem diameter. Adjustments to the cutting deck height are accomplished by inserting the pin in a desired lever support bracket set hole and positioning the lever against a desired adjustment portion of the pin stem. The user may make precision adjustments of the deck height depending upon his selection of the lever set hole and the choice adjustment portion of the pin stem on which to set the lever.

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       17 . An apparatus for a lawn mower comprising: 
 a. A cutting deck height adjustment mechanism employing a lever;    b. A lever support bracket having a plurality of lever set holes;    c. An axially disposed stem, said stem having a uniform cross-section; and    d. At least one adjustment portion on said stem, said adjustment portion having a cross-sectional dimension less than that of said uniform stem cross-section.    
   
   
       18 . The apparatus of  claim 17 , further comprising a plurality of adjustment portions each having a cross-section dimension less than that of said uniform stem cross-section.  
   
   
       19 . The apparatus of  claim 18  further comprising detent means adjacent to each said adjustment portion.  
   
   
       20 . The apparatus of  claim 19 , wherein each said adjustment portion is arrayed along said stem of said pin so as to provide a stem having successively reduced cross-sectional dimensions.  
   
   
       21 . The apparatus of  claim 20 , wherein the pin is substantially straight.  
   
   
       22 . The apparatus of  claim 17 , wherein said stem of said pin has a bore for receiving a retaining means.  
   
   
       23 . An apparatus for a lawn mower comprising: 
 a. a cutting deck height adjustment mechanism employing a lever;    b. a lever support bracket having a plurality of lever set holes;    c. an elongated stem of a uniform diameter wherein said stem is configured to be inserted into said set holes.    d. a first adjustment portion, said first adjustment portion having a diameter reduced with respect to the uniform stem diameter;    e. a second adjustment portion, said second adjustment portion having a diameter reduced with respect to the diameter of said first adjustment portion;    f. a third adjustment portion, said third adjustment portion having a diameter reduced with respect to the diameter of said second adjustment portion; and    g. detent surfaces interposed between said adjustment portions.    
   
   
       24 . The apparatus of  claim 23  wherein said first, second, and third adjustment portions are axially disposed along said stem.  
   
   
       25 . The apparatus of  claim 24  further comprising a plurality of additional adjustment portions along said stem arrayed so as to provide additional adjustment portions of a successively reduced diameter.  
   
   
       26 . The apparatus of  claim 25  wherein, said stem of said pin has a bore for receiving a retaining means.  
   
   
       27 . The apparatus of  claim 26  wherein, said retaining means includes a cotter pin.  
   
   
       28 . An apparatus for a lawn mower, the apparatus comprising: 
 a. a cutting deck height adjustment lever to establish a desired cutting deck height;    b. a pin having a head and a stem, said stem being disposed along an axial centerline and having a uniform diameter;    c. a plurality of adjustment portions disposed along said stem, each said adjustment portion being successively reduced in diameter with respect to the uniform stem diameter;    d. a plurality of detent means interposed between each adjustment portion, so that a stop surface is provided to engage the deck height adjustment lever and when said adjustment lever of said mower is disposed upon one of said adjustment portions, said deck height is set at a desired position.    
   
   
       29 . The apparatus of  claim 28  wherein the adjustment portions and detent means are axially adjacent to each other.