US 5,020,973 AGranted

Air compressor shroud

AssigneeThe Scott Fetzer Company

InventorJames B. Lammers

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Abstract

A V-twin, two-stage compressor has valve plates disposed between the head and cylinder of each stage and mounting free-floating flexible read intake and exhaust valves therein. The flexible reeds are movably captured between the floors of respective reed recesses, and separate, non-fixed keeper bars are disposed over, but slightly spaced from, the reeds. Keeper bars over the exhaust reed extend above the valve plate for engagement by the head. A restrictor plate lies within a valve plate recess on keeper bars over the intake valve. A cored crankshaft providing motor drive shaft lubrication, and a removable counterweight providing crankshaft use with one-piece connecting rods is disclosed. A cooling fan is driven by the removable counterweight and V-shaped fan shroud projections direct cooling air over the cylinders and heads while another cooling air port directs air over an intercooler. An intake manifold having a plurality of intake tubes and rib and wall structure for an air filter dividing the chamber both filters air and muffles compressor noise.

Claims1

Dependent claims

An air compressor having two cylinders in V-shaped configuration mounted on a crankcase, an intercooler disposed between said cylinders for conducting air from one cylinder to the other, a fan mounted at an end of said crankcase and a fan shroud operably disposed about said fan, and said shroud further including:

a scroll-shaped vane disposed around said fan for directing air from said fan;
two projections extending upwardly in V-shaped configuration from said shroud;
cooling air discharge passageways extending from said fan and vane into said shroud projections;
a shroud back plate having two projections in V-shaped configuration corresponding to said shroud projections, said plate closing off said shroud and forming with said shroud a cooling air chamber for receiving cooling air from said fan and vane;
transverse exhaust ports in ends of the backplate projections for exhausting cooling air from said chamber;
deflector means disposed in operable alignment with said exhaust ports for directing cooling air over said respective cylinders;
and
a further exhaust port disposed in said back plate in general register with said intercooler means for directing cooling air from within said shroud over said intercooler.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/462,779Filed 10 Jan 1990 · division
Priority: 25 Apr 1986
Granted: 4 Jun 1991
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

F04B 39/104
Adaptations or arrangements of distribution members: the members being parallel flexible strips
F04B 39/066
Cooling; Heating; Prevention of freezing: cooling by ventilation
F04B 39/1073
Adaptations or arrangements of distribution members: the members being reed valves
F04B
Positive-displacement machines for liquids

Family

Serial856,645Parent of this division · filed 25 Apr 1986
Serial252,695Parent of this division · filed 3 Oct 1988
US 4,915,594 AParent of this division
US 4,801,250 AParent of this division
US 5,020,973 AThis patent

From the US filing history. Foreign family members aren’t listed.