US 4,658,778 AGranted

Piggyback type blower unit

AssigneeKomatsu Zenoah Co.

InventorsAkira Gamoh, Takashi Miura, Toshiharu Sawada, Katsumi Kiyooka

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Abstract

There is provided a piggyback type blower unit. The blower unit comprises a piggyback frame, a fan case incorporating a fan, a powder tank arranged on top of the fan case, a fuel tank arranged behind said fan case, and an engine fixed behind the fan case and on top of the fuel tank. The piggyback frame comprises hollow frame members and is connected to the suction side of the engine to form a suction path for sucking and supplying air for the engine through the suction path, or connected to the suction side of the fan to form a suction path for sucking and supplying air for the fan through the suction path. An air cleaner is inserted within the hollow piggyback frame on the suction path communicating with the suction side of the engine.

Claims5

Dependent claims

A piggyback type blower unit comprising:

a frame having a vertical frame portion adapted to be removably supported on a user's back and a horizontal frame portion integrally joined to and extending rearwardly from said vertical frame portion, said frame being hollow and having mutually spaced air inlet and outlet openings communicating with and interconnected by the interior thereof;
a fan case incorporating a fan, said fan case being attached to said frame at a location disposed rearwardly of said vertical frame portion;
a powder tank arranged above and in communication with said fan case;
a fuel tank arranged rearwardly of said fan case on said horizontal frame portion;
an internal combustion engine arranged behind said fan case and above said fuel tank, said engine having an air suction port;
and
means for connecting said suction port to said air outlet opening, thereby establishing a flow path for engine combustion air through the interior of said frame via said inlet and outlet openings and externally of said frame from said outlet opening to said suction port via said connecting means.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/786,238Filed 10 Oct 1985
Priority: JP 59-155035[U]16 Oct 1984
Granted: 21 Apr 1987
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

B05B 7/1413
Arrangements for supplying particulate material: apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising a container fixed…
B05B 7/1427
Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising a container fixed to the discharge device: apparatus to be carried…
B05B 7/2416
Using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle:…
B05B 7/2475
Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device: comprising a container…