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US 10,329,782 B1Granted
Isolator overtravel protection for walk-behind floor scraper
AssigneeNational Flooring Equipment, Inc.
InventorMatthew C. Burk
Life of this patent
Estimating the term…
Abstract
An improved walk-behind floor scraper incorporates a plurality of isolators between a main plate and cutting head to reduce vibration and a plurality of stops to prevent damage to the isolators.
Claims12
A walk-behind floor stripping machine comprising:
- (a) a main body plate;
- (b) a cutting head holding a cutting blade, said cutting head adapted for oscillatory movement relative to the main body plate and affixed to the bottom surface of the main body plate via a plurality of isolators, each isolator comprising a top plate and a bottom plate held in spaced apart relation by an elastomeric member;
- (c) a motor coupled to the main body plate and adapted to impart oscillatory movement of the cutting head relative to the main body plate;
- and
- (d) a plurality of stops arranged and adapted to permit oscillatory movement of the cutting head relative to the main body plate and limit flex and shear movement of the cutting head when the cutting blade encounters an obstacle to protect the isolators from damage, each of said stops having a body portion comprising a base, a neck extending from the base, and a removable flange adapted to be attached to the end of the neck opposite the body portion, wherein the body portion is affixed to one of said main body plate and cutting head and said neck is adapted to extend through an opening in the other of said main body plate and cutting head, and wherein the base and the flange are each broader than the opening such that the base, neck and flange cooperate with surfaces surrounding the opening to permit oscillatory motion of the cutting head assembly, and limit flex and shear movement of the cutting head assembly damaging to the isolators.
2 more elements
A walk-behind floor stripping machine comprising:
- (a) a main body plate;
- (b) a cutting head holding a cutting blade, said cutting head adapted for oscillatory movement relative to the main body plate and affixed to the bottom surface of the main body plate via a plurality of isolators, each isolator comprising a top plate and a bottom plate held in spaced apart relation by an elastomeric member;
- (c) a motor coupled to the main body plate and adapted to impart oscillatory movement of the cutting head relative to the main body plate;
- and
- (d) a plurality of stops arranged and adapted to permit oscillatory movement of the cutting head relative to the main body plate and limit flex and shear movement of the cutting head when the cutting blade encounters an obstacle to protect the isolators from damage, each of said stops having a body portion affixed to the bottom surface of the main body plate, said body portion having base, and a neck extending from the base through an opening in the cutting head, each of said stops further comprising a removable flange adapted to be attached to the end of the neck opposite the body portion, wherein the body portion is affixed to said main body plate and said neck is adapted to extend through an opening in the cutting head, and wherein the base and the flange are each broader than the opening such that the base, neck and flange cooperate with surfaces of the cutting head surrounding the opening to permit oscillatory motion of the cutting head, and limit flex and shear movement of the cutting head when the cutting blade encounters an obstacle to protect the isolators from damage.
2 more elements
Dependencies are inferred from the claim text.