Jack Cover, (John Higson Cover, Jr.), American physicist and inventor (born April 6, 1920, New York, N.Y.—died Feb. 7, 2009, Mission Viejo, Calif.), spent most of his career in aerospace but became famous in the mid-1970s for inventing the TASER, a handheld weapon that fires darts attached to insulated wires to deliver debilitating electric shocks at ranges of up to several metres. Cover’s goal was to devise a nonlethal means of stopping violent acts, such as riots and hijackings. Though the TASER was initially classified as a firearm because the darts were propelled by gunpowder, in 1993 Cover used compressed nitrogen to activate the darts; the modification allowed the public to purchase his invention. The TASER name (a registered trademark) was a modified acronym from the title of one of Cover’s favourite childhood books: Tom Swift and His Electric Rifle.
10-1/2" x 13-3/4" Weatherproof cover slips easily over your electric tongue jack and secures with drawstring. Helps to protect jack motor from the elements. Fits most brands and styles Features: Weatherproof cover protects your electric jack from dirt, grime, and inclement weather when not in use Slips over top of jack to cover motor assembly, switch and/or light Drawstring runs
Mildew Prevention and Treatment No matter how carefully maintained, every RV cover can be a target for a case of mildew. What causes mildew and what are the most sensible ways to prevent and treat it? Mildew is a form of fungus present everywhere in the world. It is a primitive plant form that feeds on other plants and produces microscopic, seed-like spores that float freely. It takes dark, damp conditions to encourage their growth. Synthetic cover fabrics do not support the growth of mildew. Natural cover fabrics (those containing cotton) can support the growth of mildew, but such fabrics are treated with mildew inhibitors that will, with proper care, typically outlast the warranty period of the cover. However, dirt, pollen and other environmental particles that embed between the fbers of any cover fabric are gourmet fare for mildew and therefore, no RV cover fabric can prevent mildew from growing. Most remedies rely on sodium hypochlorite (household bleach) to remove mildew. A good, strong, all-around solution is ½ cup household bleach per gallon of water. Do not use liquid detergents in combination with bleaches. Scrub the affected surfaces with a soft brush, using rubber gloves and eye protection. Rinse thoroughly. For cleaning our covers, we highly recommend 303 Marine & Recreation Multi-Surface Cleaner which is safe and effective. Be aware that repeated cleanings can diminish the water repellency of the canvas. To restore water repellency to factory-new levels, we highly recommend 303 Marine & Recreation Fabric Guard. Remember that anything used to kill or remove mildew will wash or wear away over time, so be prepared for repeated treatments as part of your maintenance routine.
If you've got a larger tongue jack, we've got you covered. (Literally) This cover is a slightly bigger version of our best-selling standard cover, and it's perfect for covering larger tongue jacks. Just like our original it protects your electric tongue jack with heavy-duty vinyl. It's perfect for daily use or long term storage. It is simple, effective, and critical for proper jack storage and protection. Measures 14.5 in. wide X 17.5 in. tall, works with most manufacturers' electric tongue jacks.
Ever wonder what to do with your trailer safety chains, trailer emergency brake cable, and electrical connector when your trailer isn't hooked up to your tow vehicle? Hate to see these items just lying on the ground? Well if you are anything like Camp Addict co-founder Marshall, trying to find a good place to store these items drives you insane! (Camp Addict co-founder Kelly could care less about these details. 😂)
* The delivery date is not guaranteed until you have checked out using an instant payment method. If your Guaranteed Delivery item isn’t on time, you can (1) return the item, for a refund of the full price and return shipping costs; or (2) keep the item and get a refund of your shipping costs (if shipping was free, get a $5 eBay voucher). Attempted delivery on or before the guaranteed date will be considered a timely delivery.See Details - opens in a new window or tab
For a cover to use on the Bulldog Powered Drive Trailer Jack # BD500199 referenced in your question, I recommend the Ultra-Fab Protective Cover for Electric A-Frame Jacks # UF38-944020. This will easily slip over the jack and can be secured using the drawstring. This cover measures 12 inches x 14-1/2 inches. I have attached a video demonstration of the cover for you to check out.
The efficient ball screw on this powered jack ensures smooth, quiet operation. Easy-to-access toggle switch and bright, side-mounted LEDs make setup a cinch. Durable, corrosion-resistant jack offers Features: Electric jack with 12V motor lets you lift and lower your A-frame trailer quickly and easily Efficient ball screw makes it fast and easy to position your trailer Ball bearings roll along
From the center of the shaft to the front outside edge of the motor housing is 3-1/2 inches. I included some of the mounting plate when I measured for height, which is 8-1/4 inches, since that sticks out over the shaft as well. I also measured from the bracket that fixes to your trailer's A-frame to the bottom of the mounting plate for the motor and that measured 13 inches. See included picture for a visual. To make sure that you have a secure power connection to the jack motor I recommend...

This fits nicely on our travel trailer power jack. We purchased it to stop the sun fading the black jack. Although we purchased and started using this a couple months ago, after days of heavy rain here recently we thought it would be prudent to check under it today. Yes, it is not waterproof BUT it was only damp under there and all the electronics still worked so we were happy. Let's face it, the manufacturers make the jacks to be weatherproof so a bit of water/damp should not hurt them. I do like another reviewer's idea of putting a plastic bag on first and then putting this cover on top though. A great idea!

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