The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 31, 1993
Filed:
Apr. 07, 1992
Dwight C Janisse, Troy, MI (US);
Jay R Janisse, Troy, MI (US);
Dwight C. Janisse & Associates, Inc., Troy, MI (US);
Abstract
A fan comprises a pair of guard halves which surround an impeller. One of the guard halves is smaller than the other guard half, such that the smaller of the two may be stacked within the larger to reduce the required space for packaging. Due to the inventive construction, the required space for packaging the guard is substantially reduced over prior art structures which have guard halves of approximately equal dimensions. Further, an inventive packing structure is disclosed wherein the individual components of a guard/impeller subassembly are securely packaged relative to each other. In particular, an impeller is positioned within the stacked guard halves, and secured at a relatively fixed positioned by resilient packing materials. The guard halves are preferably formed by a number of radially and circularly extending wires. A plurality of foam blocks are spaced in the stacked guard halves, at positions spaced from the impeller. When a second subassembly including a pair of guard halves is stacked within the first pair of guard halves, the wires forming the first and second pair of guard halves dig into these foam blocks, locking the two guard/impeller subassemblies relative to each other.