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Lawn mower

Details

Inventors: Pfeiffer, Rainer; Baasner, Udo; Hugendubel, Fritz;
Assignee: Fritz Roth KG (Stuttgart-Feuerbach, DE)
Primary Examiner: Kinsey; Russell R.
Assistant Examiner: Leach; Daniel J.
Attorney, Agent or Firm: Striker; Michael J.

A lawn mower has a plurality of wheels each having a shaft, and housing means carrying a cutting element and drive means for driving the latter. The housing means are connected to the shafts movably relative to the same so as to change the distance between the housing means and the shafts to thereby correspondingly change the cutting height of the cutting element. Energy storing means are provided between the housing means and at least one of the shafts and adapted to counteract the weight of the housing means, the drive means and the cutting element so as to aid a user in upwardly adjusting the cutting element. The energy storing means may be formed as a spring, one end portion of which is connected to the housing means and another end portion is connected to a bracket provided on at least one shaft. Brackets of all the shafts may be connected with one another by a connecting member, which connecting member serves at the same time as an adjusting member so that the simultaneous adjustment of the distance between the housing means and the shafts of all the wheels of the lawn mower can be performed.

DETAILED DESCRIPTION What is claimed as new and desired to be protected by Letters Patent is set forth in the appended claims: 1.
A lawn mower, comprising a plurality of wheels each having a shaft; housing means carrying a cutting element and drive means for driving the latter, said housing means being connected to said shafts movable relative to the same so as to change the distance between said housing means and said shafts to thereby correspondingly change the cutting height of said cutting element; an adjusting member movable between a plurality of positions and arranged to arrest said housing means in each of said positions to thereby adjust said distance between said housing means and said shafts; and one spring which connects said housing means with at least one of said shafts and is simultaneously engageable with said adjusting member so that said one spring simultaneously performs two functions one of which is to substantially counteract the weight of said housing means, said drive means and said cutting element so as to aid a user in upwardly adjusting said cutting height, and the other of which is to resiliently bias said adjusting member to said positions so as to retain said adjusting member in each of said positions.
2.
The lawn mower as defined in claim 1, wherein said one shaft is provided with one bracket; said spring being provided between said housing means and said one bracket.
3.
The lawn mower as defined in claim 2, wherein said spring has two end portions spaced from one another, a first one of said end portions being connected to said housing means and a second one of said end portions being connected to said one bracket.
4.
The lawn mower as defined in claim 3, wherein said one bracket is formed as an angle element having two wings, said wings being fixedly connected with one another in an apex and each having an end section spaced from said apex, an end section of a first one of said wings being connected with said shaft, an end section of a second one of said wings engaging said second end portion of said spring

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