A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PORTABLE MOTORISED BLOWER WITH ANTI-VIBRATION HANDLE SYSTEM AND REDUCED OPERATING WEIGHT
A handle (16) is disclosed having an elongate portion (21) and a outrigger portion (26). The elongate portion has a longitudinal axis (24) which extends between two ends (22, 23) and is shaped to be grasped by an operator in use. The outrigger portion extends away from one end of the elongate portion and has a free end (27). The three ends (22, 23, 27) are each connected to the blower or other appliance by a corresponding anti-vibration coil spring (32, 33, 37) through which a corresponding bolt (42, 43, 47) passes. The outrigger portion prevents the elongate portion rotating about its longitudinal axis. In addition, the elongate portion can be grasped by a hand of an operator in either one of two positions. A first position substantially above the blower's centre of gravity provides a balanced grip whilst the blower is not operating. When the blower is operating, air is expelled from a tube having an exit generally coplanar with, or aligned with, the handle. In those circumstances, the handle is grasped at a second location spaced from the first location in a direction extending away from the tube. The blower operates in a stable equilibrium condition and can be weighed by a spring balance having a hook located at the second handle location. A weight reduction of approximately 1 kg reduces operator fatigue. The handle (16) at the second location (66) is tilted relative to the tube (14) and its outlet (15) so that when the blower is used on level ground the air exit tube points downwardly at approximately 45° and the second location of the handle is substantially level. The blower has a two-part body one part (51) of which has a grille for an air intake, and the other (52) of which has the internal combustion engine mounted thereon. Fasteners (42, 43, 47) extend from the handle through the other part and into blind holes in the one part. Thus the fasteners are not visible when the blower is viewed from the air intake side.
PORTABLE MOTORISED BLOWER WITH ANTI-VIBRATION HANDLE SYSTEM AND REDUCED OPERATING WEIGHT
A handle (16) is disclosed having an elongate portion (21) and a outrigger portion (26). The elongate portion has a longitudinal axis (24) which extends between two ends (22, 23) and is shaped to be grasped by an operator in use. The outrigger portion extends away from one end of the elongate portion and has a free end (27). The three ends (22, 23, 27) are each connected to the blower or other appliance by a corresponding anti-vibration coil spring (32, 33, 37) through which a corresponding bolt (42, 43, 47) passes. The outrigger portion prevents the elongate portion rotating about its longitudinal axis. In addition, the elongate portion can be grasped by a hand of an operator in either one of two positions. A first position substantially above the blower's centre of gravity provides a balanced grip whilst the blower is not operating. When the blower is operating, air is expelled from a tube having an exit generally coplanar with, or aligned with, the handle. In those circumstances, the handle is grasped at a second location spaced from the first location in a direction extending away from the tube. The blower operates in a stable equilibrium condition and can be weighed by a spring balance having a hook located at the second handle location. A weight reduction of approximately 1 kg reduces operator fatigue. The handle (16) at the second location (66) is tilted relative to the tube (14) and its outlet (15) so that when the blower is used on level ground the air exit tube points downwardly at approximately 45° and the second location of the handle is substantially level. The blower has a two-part body one part (51) of which has a grille for an air intake, and the other (52) of which has the internal combustion engine mounted thereon. Fasteners (42, 43, 47) extend from the handle through the other part and into blind holes in the one part. Thus the fasteners are not visible when the blower is viewed from the air intake side.
PORTABLE MOTORISED BLOWER WITH ANTI-VIBRATION HANDLE SYSTEM AND REDUCED OPERATING WEIGHT
NOTARAS JOHN ARTHUR (author) / NOTARAS ANGELO LAMBRINOS (author)
2016-03-03
Patent
Electronic Resource
English
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