[Code of Federal Regulations]
[Title 16, Volume 2]
[Revised as of January 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 16CFR1205.3]

[Page 254-255]
 
                     TITLE 16--COMMERCIAL PRACTICES
 
             CHAPTER II--CONSUMER PRODUCT SAFETY COMMISSION
 
PART 1205_SAFETY STANDARD FOR WALK-BEHIND POWER LAWN MOWERS--Table 
of Contents
 
                         Subpart A_The Standard
 
Sec.  1205.3  Definitions.

    (a) As used in this part 1205:
    (1) Blade means any rigid or semi-rigid device or means that is 
intended to cut grass during mowing operations and includes all blades 
of a multi-bladed mower.
    (2) Blade tip circle means the path described by the outermost point 
of the blade as it moves about its axis.
    (3) Crack means a visible external fissure in a solid body caused by 
tensile, compressive, or shear forces.
    (4) Cutting width means the blade tip circle diameter or, for a 
multi-bladed mower, the width, measured perpendicular to the forward 
direction, of a composite of all blade tip circles.
    (5) Deform means any visible alteration of shape or dimension of a 
body caused by stresses induced by external forces.
    (6) Engine means a power producing device which converts thermal 
energy from a fuel into mechanical energy.
    (7) Manual starting means starting the mower engine with power 
obtained from the physical efforts of the operator.
    (8) Maximum operating speed means the maximum revolutions per minute 
(rpm) obtainable by the engine or motor under the conditions of the 
particular test where the term is used. For an electrically powered 
mower, it is the speed attained when the mower is energized from a 60 Hz 
alternating current source that delivers a voltage no greater than 120 V 
and no less than 115 V at the power input to the mower, with the mower 
running. For a battery-powered mower, it is the speed attained after the 
battery has been fully charged in accordance with the mower 
manufacturer's instructions.
    (9) Motor means a power producing device that converts electrical 
energy into mechanical energy.
    (10) Normal starting means is the primary mechanism intended to be 
actuated by the operator to start a mower's engine or motor (e.g., the 
cord mechanism of a manual start engine, the switch of an electric 
motor, or a power start mechanism).
    (11) Operating control zone means the space enclosed by a cylinder 
with a radius of 15 in (381 mm) having a horizontal axis that is (1) 
perpendicular to the fore-aft centerline of the mower and (2) tangent to 
the rearmost part of the mower handle, extending 4 in (102 mm) beyond 
the outermost portion of each side of the handle (See Fig. 1).

[[Page 255]]

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    (12) Power source means an engine or motor.
    (13) Reel-type mower means a lawn mower which cuts grass by rotating 
one or more helically formed blades about a horizontal axis to provide a 
shearing action with a stationary cutter bar or bed knife.
    (14) Rotary mower means a power lawn mower in which one or more 
cutting blades rotate in essentially a horizontal plane about at least 
one vertical axis.
    (15) Separate means to cause to have any apparent relative 
displacement induced by external forces.
    (16) Shield means a part or an assembly which restricts access to a 
hazardous area. For the purposes of this part 1205, the blade housing is 
considered a shield.
    (17) Stress means a force acting across a unit area in a solid 
material in resisting separation, compacting, or sliding that tends to 
be induced by external forces.
    (18) Top of the mower's handles means the uppermost portion(s) of 
the handle that would be gripped by an operator in the normal operating 
position.
    (19) Walk-behind power lawn mower means a grass cutting machine 
either pushed or self-propelled, with a minimum cutting width of 12 in 
(305 mm) that employs an engine or a motor as a power source and is 
normally controlled by an operator walking behind the mower.
    (b) Where applicable, the definitions in section 3 of the Consumer 
Product Safety Act (15 U.S.C. 2052) apply to this part 1205.

[44 FR 10024, Feb. 15, 1979, as amended at 46 FR 54934, Nov. 5, 1981]