Asymmetric coil spring
DeFranks May 14, 2
U.S. patent number D681,980 [Application Number D/383,932] was granted by the patent office on 2013-05-14 for asymmetric coil spring. This patent grant is currently assigned to Dreamwell, Ltd.. The grantee listed for this patent is Michael S. DeFranks. Invention is credited to Michael S. DeFranks.
| United States Patent | D681,980 |
| DeFranks | May 14, 2013 |
| **Please see images for: ( Certificate of Correction ) ** |
Asymmetric coil spring
Claims
CLAIM The ornamental design for an asymmetric coil spring, as shown and described.
| Inventors: | DeFranks; Michael S. (Decatur, GA) | ||||||||||
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| Applicant: |
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| Assignee: | Dreamwell, Ltd. (Las Vegas,
NV) |
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| Family ID: | 45541119 | ||||||||||
| Appl. No.: | D/383,932 | ||||||||||
| Filed: | January 24, 2011 |
Related U.S. Patent Documents
| Application Number | Filing Date | Patent Number | Issue Date | ||
|---|---|---|---|---|---|
| 13008720 | Jan 18, 2011 | ||||
| 11978869 | Oct 29, 2007 | ||||
| Current U.S. Class: | D6/718.31 |
| Current CPC Class: | A47C23/0438 20130101; A47C27/065 20130101; A47C27/064 20130101 |
| Current International Class: | 0606 |
| Field of Search: | ;D6/503,504 ;5/716,246,248,256 ;267/91 |
References Cited [Referenced By]
U.S. Patent Documents
| 804352 | November 1905 | Van Cise |
| 1963053 | June 1934 | Powers |
| 7178187 | February 2007 | Barman et al. |
| 7921561 | April 2011 | Eigenmann et al. |
| 2006/0042016 | March 2006 | Barman et al. |
Attorney, Agent or Firm: Cantor Colburn LLP
Description
FIG. 1 shows a perspective view of an uncompressed asymmetric coil spring showing my new design. The coil spring includes an upper section and a lower section. The upper section has a generally conical shape whereby the diameter of the coil spring in the upper section increases from top to bottom of the upper section. The upper section includes four active convolutions. The lower section is generally cylindrical such that the diameter stays substantially the same along the length of the coil spring in the lower section. The full coil includes nine active convolutions.
FIG. 2 shows a top down view of the asymmetric coil spring shown in FIG. 1; and,
FIG. 3 shows a bottom down view of the asymmetric coil spring shown in FIG. 1.
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