Glen Dilworth

Partner in Jet Dynamics, the Idaho maker of personal watercraft intake grates and ride plates, and named with his partner on four US patents granted from 1992 to 1996 for intake and plate designs.

At a glance

Role: Parts maker and inventor
On the record: 6 years, from 1991 to 1997
Titles on the record: none read off a held results document yet
Companies: Jet Dynamics (founded)
In the archive: 1 history chapter

The eras this page's records fall in are drawn solid; the others are hollow.

How we know: Each bar runs the years printed on that era's panel, and which eras a page falls in is the archive's grouping of its records, not the length of anyone's career.

Design and invention

1991 and 1992 · Confirmed

US patent 5,114,368, Shaft shielding top loader, filed on 1 April 1991 with a related application of 12 December 1989 and granted on 19 May 1992, names him as Glendon L. Dilworth, second of two inventors, the other being Don R. Moyle. It claims a plate in a jet pump's water inlet that divides the incoming water into upper and lower parts, with a partition that shields the impeller drive shaft. The co-inventor and the middle initial, both printed in the trademark record, tie the patent to the Jet Dynamics partner, and the company's own page sells a patented Shaft Shielding Toploader.

Sources: US patent 5114368; USPTO record serial 75174803; Jet Dynamics home page

1991, 1992, 1993, 1994 and 1996 · Confirmed

Three US design patents name him, as Glendon L. Dilworth, with the same co-inventor, Don R. Moyle: D325,917, Fluid flow directing element for watercraft, filed on 29 March 1991 and granted on 5 May 1992; D335,484, Watercraft skid plate, filed on 7 October 1991 and granted on 11 May 1993; and D366,444, Jet-pump watercraft intake grate, filed on 13 October 1994 and granted on 23 January 1996. Each claims an ornamental design as shown and described. The co-inventor, printed on patent 5,114,368 and in the trademark record, ties them to the Jet Dynamics partner.

Sources: US design patent D325917; US design patent D335484; US design patent D366444; USPTO record serial 75174803; US patent 5114368

Business

1996 and 1997 · Confirmed

USPTO's record of the JET DYNAMICS mark, for personal watercraft intake grates and ride plates, gives its owner as Jet Dynamics, an Idaho partnership composed of Glen L. Dilworth and Don R. Moyle. The application was filed on 1 October 1996 and the mark registered on 2 September 1997; the registration was cancelled in 2004.

Sources: USPTO record serial 75174803

Likely

The Times-News of Twin Falls, Idaho, reported on 8 March 1992, in a photo caption, that he and Don Moyle, both described as veteran jet boat racers, had formed Jet Dynamics to make and market their inventions. The company's own page, which names both men as its founders, gives 1990 as the year it was founded; that is the company's account, and the newspaper gives no year.

Sources: Times-News 8 March 1992; Jet Dynamics home page

Recognition

Likely

The IJSBA hall of fame roster lists Glen Dilworth among its three inductees of 2012. The roster prints names only, so reading the entry as the Jet Dynamics partner's is the archive's inference from the name.

Sources: IJSBA hall of fame page

Names as printed

Glen L. Dilworth (USPTO record serial 75174803); Glendon L. Dilworth (US patent 5114368)

Elsewhere in the archive

History chapter: The aftermarket: pumps, plates, mats and the registers
Organisation: International Jet Sports Boating Association
Era: The early years, in print
Era: The makers and their machines

What the archive has not read (2)

The company's own page says he acquired all rights to Jet Dynamics in 1998; no other document read records it, so it is not stated here as fact (searched the archive's mirror and research cache, 2026-10-05).
The registrant's own first-use claim is not printed here as a founding date (checked 2026-10-05).

Documents cited on this page

USPTO record serial 75174803 (tsdr.uspto.gov): Trademark Status and Document Retrieval record, serial 75174803, registration 2093209 (JET DYNAMICS), United States Patent and Trademark Office, 1997-09-02; government, high. JET DYNAMICS, filed 1 October 1996, registered 2 September 1997, cancelled 5 June 2004 under Section 8, for personal watercraft intake grates and ride plates. Owner Jet Dynamics, an Idaho partnership composed of Glen L. Dilworth and Don R. Moyle. The published date is the registration date.
US patent 5114368 (patents.google.com): US patent 5,114,368, Shaft shielding top loader (USPTO record), United States Patent and Trademark Office, 1992-05-19; government, high. Filed 1 April 1991 with a related application of 12 December 1989, granted 19 May 1992, inventors printed as Moyle; Don R. and Dilworth; Glendon L., no assignee. Two claims for a top loading plate in a jet pump's water inlet with a partition that shields the impeller drive shaft. Held as the USPTO Patent Public Search record; the link is the Google Patents page.
Jet Dynamics home page (jet-dynamics.com): Jet Dynamics home page (jet-dynamics.com, read 2026), Jet Dynamics; manufacturer primary, low. The company's own page, copyright 2023, giving its founding in 1990 by Glen Dilworth and Don Moyle and naming its products as patented. Low, as a company's account of its own history; used only beside an independent source. Contact details are removed from the held copy.
US design patent D325917 (patents.google.com): US design patent D325,917, Fluid flow directing element for watercraft (USPTO record), United States Patent and Trademark Office, 1992-05-05; government, high. Filed 29 March 1991 with a related application of 12 December 1989, granted 5 May 1992, inventors printed as Moyle; Don R. One claim, the ornamental design as shown and described; the drawings were not read. (as US patent 5114368 above)
US design patent D335484 (patents.google.com): US design patent D335,484, Watercraft skid plate (USPTO record), United States Patent and Trademark Office, 1993-05-11; government, high. Filed 7 October 1991, granted 11 May 1993, inventors printed as Moyle; Don R. Its one US reference is Klus's D317,431. (as US patent 5114368 above)
US design patent D366444 (patents.google.com): US design patent D366,444, Jet-pump watercraft intake grate (USPTO record), United States Patent and Trademark Office, 1996-01-23; government, high. Filed 13 October 1994, granted 23 January 1996, inventors printed as Dilworth; Glendon L. and Moyle; Don R., no assignee. (as US patent 5114368 above)
Times-News 8 March 1992 (archive.org): The Times-News (Twin Falls, Idaho), 8 March 1992, article on Jet Dynamics (archive.org OCR excerpt), The Times-News, issue held by the Internet Archive, 1992-03-08; editorial, medium. A local newspaper's report, in raw column-interleaved OCR, that Glen Dilworth and Don Moyle, veteran jet boat racers, formed Jet Dynamics to make and market their inventions. Only phrases the OCR prints whole are used. Passages not used are removed from the held copy.
IJSBA hall of fame page (ijsba.com): The Jacobsen-Stjernstrom IJSBA Hall of Fame (IJSBA page), International Jet Sports Boating Association; sanctioning body, high. The association's own roster, read on 22 September 2026, giving the hall's name, its creation and dedication in 2006, and inductees by year to 2014, names only. It publishes no selection criteria and no citation for anyone.

Changes to this page

2026-10-07: Names his partner, Don Moyle, where the documents print the name, now that Don Moyle has his own record. Claim 2 now says, as Don Moyle's record does, that the 1990 date is the company's account and that the Times-News item is a photo caption, and 1990 no longer shows on the record year by year, since it rests only on the company's page.

Cite this page

“Glen Dilworth”, BaddJet archive, https://baddjetarchive.com/key-figures/glen-dilworth/

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0 titles on the record · 5 sourced facts · 8 documents