Patent ID: 11889785
Assignee: METALCRAFT OF MAYVILLE, INC.
Field: Other special machines (Mechanical engineering)
Classification: CPC A | IPC A

Claim 10:
11. A walk-behind lawnmower comprising:
a cutting deck having front and rear portions and opposite sides;
a guide handle assembly extending rearwardly from the rear portion of the deck;
first and second front brackets pivotally mounted on opposite sides of the front portion of the deck;
first and second front wheels rotatably mounted on the first and second front brackets, respectively;
a front link connecting the first and second front brackets to one another so as to cause the first and second front brackets to pivot simultaneously relative to the deck;
first and second rear brackets pivotally mounted on opposite sides of the rear portion of the deck;
first and second rear wheels rotatably mounted on the first and second rear brackets, respectively;
a rear link connecting the first and second rear brackets to one another so as to cause the first and second rear brackets to pivot together relative to the deck;
a linkage operatively connected to the first front bracket and the first rear bracket so as to be capable of driving the first front bracket and the first rear bracket to pivot together relative to the deck;
an adjustment lever operatively connected to the linkage, wherein a movement of the adjustment lever causes the front and rear brackets to pivot co-directionally relative to the cutting deck to raise and lower the deck relative to all four wheels simultaneously; and
a locking mechanism configured to prevent lowering of the cutting deck beyond a designated height, the locking mechanism comprising
a locking pin;
a lug extending laterally inwardly from the linkage, and
an array of pin receptacles that are provided in an array of longitudinally extending rows, wherein the pin receptacles of each row are longitudinally staggered relative to the pin receptacles of the remaining rows, and wherein each pin receptacle defines a unique cutting depth of the cutting deck with the cutting depths being adjustable in increments of less than ½″.