Don Moyle

Named with Glen Dilworth as co-inventor on four US patents granted from 1992 to 1996 for intake and plate designs, and as one of the two partners in Jet Dynamics.

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 Don R. Moyle, first of two inventors, the other being Glendon L. Dilworth. 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 name Don R. Moyle 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 Don R. Moyle, with the same co-inventor: 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, which prints the two names in the other order. 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

Confirmed

Four of the later US patents by other inventors list his top loader patent among their references, printed there as Moyle or Moyle et al.: 5,234,361 and 5,281,177, granted in 1993 and 1994, then 5,540,605, granted in 1996, and 8,905,800, granted in 2014, which prints it as cited by the applicant. The first two also discuss it, in their accounts of earlier designs, as an attempt to bring a vane inside the intake channel.

Sources: US patent 5234361; US patent 5281177; US patent 5540605; US patent 8905800; 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 for want of an acceptable Section 8 declaration.

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 Glen Dilworth, 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

Names as printed

Don R. Moyle (USPTO record serial 75174803); Moyle; Don R. (US patent 5114368)

Elsewhere in the archive

History chapter: The aftermarket: pumps, plates, mats and the registers
Era: The early years, in print
Era: The makers and their machines

What the archive has not read (3)

The company's own page says it was founded in 1990 by Glen Dilworth and Don Moyle and that Glen acquired all rights to Jet Dynamics in 1998; both are the company's own account and no other document read records either, so neither is stated here as fact, and no document other than that page says when his part in the company began or ended (searched the archive's mirror and research cache, 2026-10-07).
No personal watercraft result sheet held names him, and the jet boat racing the newspaper mentions is outside this archive (searched the archive's mirror and research cache, 2026-10-07).
The drawings of the three design patents were not read, so no shape is described (checked 2026-10-07).

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)
US patent 5234361 (patents.google.com): US patent 5,234,361, Foiled grating for jet watercraft (USPTO record), United States Patent and Trademark Office, 1993-08-10; government, high. Filed 10 November 1992, granted 10 August 1993, inventors printed as Dickinson; Glenn and Chapin; William D., no assignee. Seven claims for an intake grating whose foil, carried on two lengthwise bars, divides the intake channel. The held text is the USPTO Patent Public Search record read on the accessed date (street addresses removed from the held copy); the link is the public Google Patents page for the same patent. It names no company, so tying it to R&D is an inference.
US patent 5281177 (patents.google.com): US patent 5,281,177, Foiled grating for jet watercraft (USPTO record), United States Patent and Trademark Office, 1994-01-25; government, high. Filed 5 August 1993 with a related application of 10 November 1992 (the filing date of 5,234,361), granted 25 January 1994, inventors printed as Dickinson; Glenn and Chapin; William, no assignee, five claims. (as US patent 5114368 above)
US patent 5540605 (patents.google.com): US patent 5,540,605, Water inlet foil grating of motorboat (USPTO record), United States Patent and Trademark Office, read in Patent Public Search, 1996-07-30; government, high. Filed 15 July 1994, granted 30 July 1996, inventor printed Solas Y. J. Lin, no assignee. Its references include US 5,114,368 and US 5,234,361, and its description sets it against the grating of the latter. The held text is USPTO's Patent Public Search record; the link goes to Google Patents. The printed patent was not read.
US patent 8905800 (patents.google.com): US patent 8,905,800, Inlet grate for a water jet propulsion system (USPTO record), United States Patent and Trademark Office, read in Patent Public Search, 2014-12-09; government, high. Assigned to BRP US Inc., filed 18 July 2013 with a related application of 31 August 2009, granted 9 December 2014. Cited here for what its applicant listed as references: US 5,114,368 and US 5,540,605, and web pages the applicant dates, among them an Aquavien Pro shoe and grate of 2002, an R&D grate of 2004 and a Riva Yamaha GPR race grate and pump shoe of 11 May 2001. The record does not hold the pages.
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.

Cite this page

“Don Moyle”, BaddJet archive, https://baddjetarchive.com/key-figures/don-moyle/

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