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

Claim 0:
1. 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; and
a locking mechanism configured to prevent lowering of the cutting deck beyond a designated height, the locking mechanism comprising:
a locking pin;
a pin engagement mechanism provided on and configured to move in unison with the linkage; and
an array of pin receptacles spaced longitudinally along the cutting deck, the pin engagement mechanism selectively engaging the pin when the pin engages a designated pin receptacle on the cutting deck,

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.