US 4,175,352 A · Spring powered, portable, hand held suction and blower apparatus

Abstract

A portable, hand held, air suction and blower unit comprising an air inlet assembly with sequentially arranged nozzle, flexible inlet tube, and diffuser, all detachably connected to the front end of the unit body. The diffuser cooperates with the front end of the body to form a bayonet type joint therebetween. An air inlet passage extends rearwardly from the front end of the body to the tangential fan which is journaled at the rear of the body. The fan is powered by a manually wound flat spiral spring, which spring drives the fan through a gear train. An air outlet passage extends forwardly from the fan to an outlet opening also located at the front of the unit body. A removable, pervious receptacle, with an open forward end, is located in the front portion of the air inlet passage and serves to collect particles or objects which are drawn into the body by the flowing air. Furthermore, a flap valve, which is located in the diffuser, allows the particles or objects to pass by and enter into the receptacle when air is being drawn into the body by the fan. The flaps of the valve, however, relax to close off the receptacle from the nozzle when the fan is not operating.

Claims5

Dependent claims

A portable, hand held, air suction and blower apparatus, comprising:

(a) a body having front and rear end portions;
(b) said body front end portion including a transverse front face having an air inlet opening and a substantially smaller air outlet opening aligned with said air inlet opening;
(c) a tangential fan journaled in said body rear end portion for rotation about an axis generally parallel to said transverse front face, for drawing air into said body through said inlet opening and then forcing such same air forwardly out of said body through said outlet opening;
(d) a manually energized flat spiral spring motor mounted within said body, said motor being geared to said fan for rotating said fan;
and
(e) a diffuser detachably connectable to said body front end portion for directing air into said body through said inlet opening.

3 more elements

A portable, hand held, air suction and blower apparatus, comprising:

(a) a body having front and rear end portions;
(b) said body front end portions including an air inlet opening and a substantially smaller air outlet opening aligned with said air inlet opening;
(c) a tangential fan journaled in said body rear end portion for drawing air into said body through said inlet opening and then forcing such air forwardly out of said body through said outlet opening;
(d) manually energized flat spiral spring motor mounted within said body, said motor being geared to said fan for rotating said fan;
(e) a diffuser detachably connectable to said body front end portion for directing air into said body through said inlet opening;
and
(f) wherein said spring motor is aligned with and is disposed longitudinally beyond one end of said tangential fan, said spring motor being coaxially surrounded by a cylindrical, rotatable housing, said spring motor housing:
being connected to the exterior end of said spring for being rotated by said spring, and
having portions forming an integral internal gear located within the end portion of said spring motor housing adjacent to said fan and of a diameter larger than said spiral spring motor when in an unwound state.

6 more elements

Dependencies are inferred from the claim text.

Spring powered, portable, hand held suction and blower apparatus

Life of this patent

Spring powered, portable, hand held suction and blower apparatus

Life of this patent

Abstract

Claims5