Reversible Ratchet
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 GearWrench 85227 Quad Box Reversible Ratcheting Metric Wrench Set $29.99 Time Remaining: 24d 14h 27m Buy It Now for only: $29.99 |
 New Titan Tools Reversible 1 4 Dr Finger Ratchet 12090 $12.99 Time Remaining: 59m |
 GearWrench 85900 Quad Box Reversible Ratcheting SAE Wrench Set $29.99 Time Remaining: 24d 14h 21m Buy It Now for only: $29.99 |
 EZ 5 Pc Metric Flex Reversible Ratcheting Wrench EZRRM6 $133.99 Time Remaining: 21d 15h 4m Buy It Now for only: $133.99 |
 New Titan Tools Reversible 3 8 Dr Finger Ratchet 12091 $13.50 Time Remaining: 59m |
 Cresent 11mm Reversible Ratcheting Combination Wrench FRRM11 $10.00 Time Remaining: 3d 22h 54m Buy It Now for only: $10.00 |
 3 8 Drive Professional Reversible Ratchet 103 Inch $61.53 Time Remaining: 16d 20h 35m Buy It Now for only: $61.53 |
 Craftsman Reversible Ratcheting Chain Wrench No 55712 Estate Sale $13.00 (13 Bids) Time Remaining: 1d 8h 34m |
 EZ Red 5 Pc Metric Flex Reversible Ratcheting Wrench set EZRRM6 $136.87 Time Remaining: 2d 10h 33m Buy It Now for only: $136.87 |
 Gearwrench 17mm Reversible Ratchet Wrench 12 Point New $19.99 Time Remaining: 23d 22h 17m Buy It Now for only: $19.99 |
 Blue Point Ratcheting Combination Wrench Set 12pc 8mm 19mm BOERM712 Reversible $86.50 (15 Bids) Time Remaining: 23h 12m |
 ARMSTRONG Reversible Ratcheting Combination Wrench 7 16 28 814 NEW $11.15 Time Remaining: 17d 11h 30m Buy It Now for only: $11.15 |
 Gearwrench 13mm Reversible Ratchet Wrench 12 point New $14.99 Time Remaining: 19d 23h 59m Buy It Now for only: $14.99 |
 Blackhawk Ratcheting SAE Combination Wrench Set 8 pc 5 16 3 4 Reversible NICE $34.05 (6 Bids) Time Remaining: 23h 29m |
 Gearwrench 8mm Reversible Ratchet Wrench 12 Point New $10.99 Time Remaining: 21d 1h 17m Buy It Now for only: $10.99 |
 Crescent 8mm Reversible Ratcheting Combination Wrench FRRM08 $5.95 Time Remaining: 3d 22h 59m Buy It Now for only: $5.95 |
 REVERSIBLE RATCHET HANDLE $1.99 Time Remaining: 21d 17h 46m Buy It Now for only: $1.99 |
 NEW Craftsman 8pc SAE Combination Flip Reverse Ratchet Wrench Set Standard 12pt $28.00 (19 Bids) Time Remaining: 2d 21h 45m |
 1 4 Drive Professional Reversible Ratchet 65 SKT40971 BRAND NEW $46.24 Time Remaining: 27d 1h 19m Buy It Now for only: $46.24 |
 Napa USA 3 8 Reversible Ratchet Brand New $17.00 Time Remaining: 21d 18h 21m Buy It Now for only: $17.00 |
 SNAP ON 11MM OFFSET REVERSIBLE RATCHETING COMBINATION WRENCH SOEXRM11 EXCELLENT $17.51 (9 Bids) Time Remaining: 21h 10m |
 1 4 Drive Ratchet with One Hand Reverse Astro Pneumatic 9724 Wrench NEW $13.99 Time Remaining: 18d 16h 9m Buy It Now for only: $13.99 |
 PROTO RATCHET HANDLE 3 8 INCH FORWARD AND REVERSE CHROME PROFESSIONAL $5.00 Time Remaining: 28d 20h 16m Buy It Now for only: $5.00 |
 1 2 Air Ratchet Reversible Wrench Compressor Tools Auto Shop Home New HD $34.25 Time Remaining: 13h 55m |
 Blue point BOERF10 5 16 12 point box FLEX end reversible Ratchet Wrench EXC $13.99 Time Remaining: 1d 16h 13m Buy It Now for only: $13.99 |
 HUSKY USA 3 8 Reversible Ratchet $13.00 Time Remaining: 8d 16h 15m Buy It Now for only: $13.00 |
 2pcs Mini Handle Palm Ratchet Reversible Wrench Tool $18.00 Time Remaining: 22h 34m |
 K Tool 45613 Reversible Ratcheting Combination Wrench 13mm $10.29 Time Remaining: 28d 19h 1m Buy It Now for only: $10.29 |
 K Tool 45610 Reversible Ratcheting Combination Wrench 10mm $8.99 Time Remaining: 28d 19h 1m Buy It Now for only: $8.99 |
 STANLEY12PT REVERSIBLE POL CHROME COMBINATION RATCHET WRENCH 13MM $8.99 Time Remaining: 4d 19h 1m Buy It Now for only: $8.99 |
 13 pc SAE Reversible Combo Ratcheting Gear Wrench 9509 $159.99 Time Remaining: 1d 13m |
 K Tool 45616 Reversible Ratcheting Combination Wrench 16mm $11.99 Time Remaining: 28d 19h 1m Buy It Now for only: $11.99 |
 1 2DR15Long Reversible Ratchet Quick Release $32.00 Time Remaining: 23d 22h 27m Buy It Now for only: $32.00 |
 1 2 Air Ratchet Reversible Wrench Compressor Tools Automotive Shop Tool NR $28.95 Time Remaining: 2d 14h 44m |
 STANLEY12PT REVERSIBLE POL CHROME COMBINATION RATCHET WRENCH 15MM $8.99 Time Remaining: 4d 18h 57m Buy It Now for only: $8.99 |
 Side Terminal Battery Wrench New 5 16 Ratcheting Reversible Rubber Handle $4.99 Time Remaining: 3d 14h 8m Buy It Now for only: $4.99 |
 MAC TOOLS AR777A 3 8 AIR RATCHET MADE in USA Forward Reverse Control $69.99 Time Remaining: 2d 15h 28m |
 Gearwrench 5 16 Reversible Ratchet Wrench 12 Point New $9.99 Time Remaining: 8d 18h 29m Buy It Now for only: $9.99 |
 Gearwrench 1 2 Inch Reversible Ratchet Wrench 12 point New $13.99 Time Remaining: 17d 2h 10m Buy It Now for only: $13.99 |
 1 2 Air Ratchet Reversible Wrench Compressor Tools Auto Shop Home New HD $34.25 Time Remaining: 1d 20h 53m |
 K Tool 45609 Reversible Ratcheting Combination Wrench 9mm $8.99 Time Remaining: 28d 19h 1m Buy It Now for only: $8.99 |
 Ratch Cut Die Nut DIENUT Reversible Ratcheting Tap Die wrench handle kit NEW $29.99 Time Remaining: 9d 9h 58m Buy It Now for only: $29.99 |
 3 8DR 11long FLEXIBLE REVERSIBLE RATCHET $28.00 Time Remaining: 3d 22h 38m |
 GearWrench 11MM RATCHETING REVERSIBLE WRENCH 81406 $19.99 Time Remaining: 26d 12h 51m Buy It Now for only: $19.99 |
 K Tool 45618 Reversible Ratcheting Combination Wrench 18mm $14.99 Time Remaining: 28d 19h 1m Buy It Now for only: $14.99 |
 GearWrench 8 pc Metric Full Polish Reversible Ratcheting Combination Wrench Set $65.00 Time Remaining: 1d 20h 32m Buy It Now for only: $65.00 |
 Gearwrench 14mm Reversible Ratchet Wrench 12 Point New $10.99 Time Remaining: 1d 22h 32m |
 ARMSTRONG Reversible Ratcheting Combination Wrench 10MM $11.30 Time Remaining: 1d 19h 28m Buy It Now for only: $11.30 |
 AutoCraft 3 8 Reversible Ratchet $12.00 Time Remaining: 10d 10h 25m Buy It Now for only: $12.00 |
 1 4 Dr Reversible Air Ratchet Wrench Tools $17.99 Time Remaining: 3d 19h 37m |
 3 8DR 11long FLEXIBLE REVERSIBLE RATCHET $29.99 Time Remaining: 22d 19h 59m Buy It Now for only: $29.99 |
 Gear Wrench 18 MM Reversible Ratcheting Wrench Gearwrench $11.99 Time Remaining: 17d 12h 18m Buy It Now for only: $11.99 |
 Reversible Ratchet Screwdriver Set Bits And Socket Tool $8.99 Time Remaining: 3d 13h 18m |
 3 8 Drive Professional Reversible Ratchet 76 SKT45170 $45.00 Time Remaining: 4d 23h 2m Buy It Now for only: $45.00 |
 GearWrench 9509 13 Piece Reversible Combination Ratchet Wrench Set SAE $205.94 Time Remaining: 2d 1h 4m Buy It Now for only: $205.94 |
 1930s CRAFTSMAN 1 2 DRIVE REVERSIBLE RATCHET 1ST MODEL WITH EXTERNAL LEVER $20.00 Time Remaining: 5d 9h 15m |
 HAZET 916 1 Fine Tooth Reversible Ratchet $84.55 Time Remaining: 22d 10h 52m Buy It Now for only: $84.55 |
 ARMSTRONG Reversible Ratcheting Combination Wrench 9 16 28 818 NEW $13.65 Time Remaining: 17d 11h 32m Buy It Now for only: $13.65 |
 Performance Tool 1 4 and 3 8 Reversible Ratchet $7.99 Time Remaining: 15d 16h 50m Buy It Now for only: $7.99 |
 Proto 5249BL Ratchet Reversible 3 8Dr 7 In Black Industrial Finish $1.00 (1 Bid) Time Remaining: 16h 23m |
 Proto Professional 3 8 drive ratchet wrench 5250 Reversible 11 Inch Chrome $30.00 Time Remaining: 12d 23h 3m Buy It Now for only: $30.00 |
 ARMSTRONG Reversible Ratcheting Combination Wrench 1 2 28 816 NEW $12.40 Time Remaining: 17d 11h 34m Buy It Now for only: $12.40 |
 3 8DR 11long FLEXIBLE REVERSIBLE RATCHET $28.00 Time Remaining: 5d 22h 38m |
 GearWrench Metric Reversible Ratcheting Wrench Set $64.95 Time Remaining: 19d 14h 5m Buy It Now for only: $64.95 |
 PROMATE 02230C 1 4Dr 5 1 2 Reversible Ratchet PM02230C $7.98 Time Remaining: 29d 18h 59m Buy It Now for only: $7.98 |
 Husky 7 Piece SAE Reverse Ratcheting Wrench Set $0.01 Time Remaining: 5d 12h 7m Buy It Now for only: $40.00 |
 STANLEY12PT REVERSIBLE POL CHROME COMBINATION RATCHET WRENCH 8MM $7.99 Time Remaining: 4d 19h 8m Buy It Now for only: $7.99 |
 LOT GEARWRENCH 1 2 7 16 REVERSIBLE RATCHET WRENCH 12 POINT FREE SHIPPING $20.00 Time Remaining: 27d 23h 44m Buy It Now for only: $20.00 |
 Matco tools 3 4 x 7 8 Combination off set flat ratchet wrench reversible Used $14.95 Time Remaining: 3d 12h 11m Buy It Now for only: $16.50 |
 GearWrench 9610 10mm Reversible Combination 12 Point Ratcheting Wrench $11.99 Time Remaining: 24d 18h 25m Buy It Now for only: $11.99 |
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 NEW SNAP ON INDUSTRIAL BRAND FLEX HEAD REVERSIBLE RATCHETING WRENCH 8PC SAE $149.11 Time Remaining: 2d 22h 28m |
 SK TOOLS 1 2 1 4 DRIVE REVERSIBLE RATCHET BREAKER BAR EXTENSION 4p MADE IN USA $80.00 Time Remaining: 6d 14h 44m Buy It Now for only: $80.00 |
 K Tool 45622 Reversible Ratcheting Combination Wrench 22mm $21.39 Time Remaining: 28d 19h Buy It Now for only: $21.39 |
 EZ Red 4pc XXL Reversible Ratcheting Spline Wrenches $109.19 Time Remaining: 2d 1h 4m Buy It Now for only: $109.19 |
 NEW SNAP ON INDUSTRIAL BRAND FLEX HEAD REVERSIBLE RATCHETING WRENCH 8PC SAE $149.11 Time Remaining: 2d 22h 34m |
 Crescent 22mm Reversible Ratcheting Combination Wrench FRRM22 $22.85 Time Remaining: 3d 22h 4m Buy It Now for only: $22.85 |
 SNAP ON FAR25A COMPACT AIR 1 4 REVERSIBLE RATCHET 5 25FT LB $135.00 Time Remaining: 22d 8h 20m Buy It Now for only: $135.00 |
 Reversible Air Ratchet Wrench 1 2 Dr Car Trucks Tools $22.99 Time Remaining: 3d 13h 18m |
 K Tool 45908 Reversible Ratcheting Combination Wrench 1 4 $8.99 Time Remaining: 21d 19h 23m Buy It Now for only: $8.99 |
 1 4 RATCHET ASTRO PNEUMATIC ONE HAND REVERSIBLE QUICK RELEASE 20 OFF 2 DAYS $13.56 Time Remaining: 4d 15h 52m Buy It Now for only: $13.56 |
 2pcs Mini Handle Palm Ratchet Reversible Wrench Tool $18.00 Time Remaining: 6d 22h 40m |
 TITAN 12 PC METRIC REVERSIBLE RATCHET WRENCH SET 17365 $82.09 Time Remaining: 21d 19h 10m Buy It Now for only: $82.09 |
 ARMSTRONG Reversible Ratcheting Combination Wrench 5 16 $10.20 Time Remaining: 2d 21h 28m Buy It Now for only: $10.20 |
 BLUE POINT TOOLS 16MM REVERSE RATCHETING COMBINATION WRENCH $9.99 (1 Bid) Time Remaining: 2d 19h 23m |
 K Tool 45914 Reversible Ratcheting Combination Wrench 7 16 $9.59 Time Remaining: 21d 19h 22m Buy It Now for only: $9.59 |
 STANLEY12PT REVERSIBLE POL CHROME COMBINATION RATCHET WRENCH 12MM $6.99 Time Remaining: 4d 19h 4m Buy It Now for only: $6.99 |
 3 Piece Chrome Stubby Reversible Ratchet Handle Set Forged Ratchet Set Tools $22.99 Time Remaining: 21d 12h 15m Buy It Now for only: $22.99 |
 BLUE POINT TOOLS 9MM REVERSE RATCHETING COMBINATION WRENCH FREE SHIP USA ONLY $12.50 (3 Bids) Time Remaining: 2d 19h 20m |
 1 4 Drive Reversible Ratchet and Bit Driver MTN1060R BRAND NEW $36.64 Time Remaining: 15d 21h 4m Buy It Now for only: $36.64 |
 Florida 1 4 Quick Reverse Flat Head Ratchet 733M $79.99 Time Remaining: 24d 13h 45m Buy It Now for only: $79.99 |
 BLUE POINT TOOLS 11MM REVERSE RATCHETING COMBINATION WRENCH FREE SHIP USA ONLY $9.99 (1 Bid) Time Remaining: 2d 19h 21m |
 KTC 10mm Box End Combination 10mm Flex Reversible Ratcheting Head $17.95 Time Remaining: 28d 14h 40m Buy It Now for only: $17.95 |
 Crescent 17mm Reversible Ratcheting Combination Wrench FRRM17 $15.00 Time Remaining: 3d 22h 19m Buy It Now for only: $15.00 |
 GearWrench 17mm Full Polish Reversible Ratcheting Combination Wrench $7.99 Time Remaining: 6d 20h 56m |
 ARMSTRONG Reversible Ratcheting Combination Wrench 5 8 $14.45 Time Remaining: 19d 21h 39m Buy It Now for only: $14.45 |
 ARMSTRONG Reversible Ratcheting Combination Wrench 3 8 $10.60 Time Remaining: 2d 21h 3m Buy It Now for only: $10.60 |
 GearWrench 15mm Full Polish Reversible Ratcheting Combination Wrench $9.99 Time Remaining: 6d 21h 29m |
 KOKEN 3 8 Z SERIES Reversible Ratchet $55.00 Time Remaining: 16d 3h 7m Buy It Now for only: $55.00 |
 ARMSTRONG Reversible Ratcheting Combination Wrench 8MM $10.25 Time Remaining: 1d 21h 24m Buy It Now for only: $10.25 |
Reversible Ratchet
RV Maintenance Tips - Arnold Donszelmann of Leisure RV in Millet Recommends
Article Source: RV Sales USA www.rvsalesusa.com
RV Values:
For those who would like to get a good idea of the current market value of an RV we recommend the National Automobile Dealers Association web site as an excellent Internet source. Just click on RV Values link and plug in the options the RV is equipped with and they will calculate with a current market value for your recreational vehicle.
Awning Wind Protection:
Augment your awning's security from wind damage by adding additional ratcheting straps available from local hardware stores. Canvas securing clamps help in keeping the awning from flapping in heaver winds.
Engine and Drivetrain:
Always check the engine oil, coolant, transmission fluid levels, and tire pressures before you head out for a trip. Following the manufacturer's guidelines for oil changes greatly extends the line of your equipment.
Moisture Buildup:
Moisture can be a real problem in an RV, particularly during the cold weather when temperatures drop below freezing and moisture inside the RV condenses on surfaces, particularly non-insulated surfaces. This can cause staining and mildew growth. The biggest producer of moisture is the shower in the bathroom and cooking in the kitchen. Our experience has provided the following advice:
Isolate the bathroom by closing pocket doors and opening the roof vent and turning on the vent fan when showering. This consumes a certain amount of heat from of the RV, but seems well worth the added fuel expense in order to lessen the amount of moisture generated by the shower.
Do as little water boiling ( i.e. soup, rice, noodles, vegetables, etc.) in the kitchen as possible. This is the time that the usefulness of the microwave really shines. In cold weather we use the microwave almost exclusively, lessening the use of the stove top for heating water. If you need to boil fluids on the stove top open up the roof vent and a window across the room and suck some fresh dry air through the RV. Again this also removes some interior heat but it is worth getting the moisture out, especially if that moisture starts to freeze and build up on the interior side of your windows and walls! For our second year of full-timing we purchased a small dehumidifier to help keep the condensation down. It does a good job of pulling moisture out of the air and helps combat the moisture buildup.
Norcold Refrigerator:
Replace the hex-head screws (10-24) in the freezer compartment of the NORCOLD refrigerator with high-tempered steel screws. We've had problems with ice getting in behind the fender washers and snapping off the heads of the original screws making the removal of the studs very difficult.
Bathroom Sink Maintenance:
I've found that the bathroom sink trap needs to be cleaned on a by-monthly basis. When water drainage from the sink starts to slow I know it's time to clean out the trap. It is a straight forward job. Put a catch container under the trap, loosen the threaded pipe nuts and sink stopper connecting rod located on the rear of the down pipe. Clean any buildup from the trap and reinstall in the reverse order making sure that the actuating rod gets put back into the slot in the sink stopper. Re-tighten the plumbing nuts - hand tight is good enough. Unlike the bathroom sink, the shower drain has no stopper, so I use high pressure water spray from the garden hose to blast it clean.
Toilet Seat Adjustment:
How to get that toilet seat tight: Reach behind and underneath to loosen up the plastic wing nuts securing the seat to the bowel. When it is loose, slide the securing brackets toward each other. The seat has separate seat and securing brackets that are joined by opposing pins on the securing brackets and holes in the seat and seat-back. The pins fit into the rear of the seat. After you've loosened the brackets, you can then slide them towards each other and, in the process, slide the pins out of the seat/seatback pieces. Once the pins are free of the seat lift off the seat and seat-back. These separate pieces join at the rear. The brackets have hinged plastic covers which hide the securing screws. Flip open these flaps (hinged at the back) to get access to the screw heads. Loosen the screws just to the point of being able to freely move the rear brackets on the bowel, insert the bracket pins into the seat/seatback as a unit by first pushing the brackets toward the center (together) and then apart into the seat/seatback holes. Center the seat on the bowel and hold the plastic wing nuts as you use a screwdriver to tighten down on the screws from the top. You can get some good leverage on the screws to really secure the seat to the bowel. Snap close the screw cover flaps.
Toilet Bowl Seal:
If your toilet bowl does not hold water for an extended period of time it means that the seal is not working properly. If you have been using your RV for some time (i.e. two plus years full time), there is probably a build-up of hardened waste deposits on the rubber seal. The repair is surprisingly simple and easy to do. All you need is Phillips and flat blade screwdrivers.
The toilet is comprised of three primary pieces: the bowl and seat, the pedestal with water flush valve, and two wide rubber/synthetic gaskets mounted between them. If the seal has been damaged it will need to be replaced. This is unlikely however. All that is needed is a good gasket cleaning to remove the crusted waste deposits on the seals. Though not a pleasant job, it can be easily taken care of:
• Turn OFF the toilet water supply.
• Remove the plastic skirt around the pedestal accessible from the rear using the flat blade screwdriver.
• Loosen the wide stainless steel clamp that captures the "C" rings which secure the bowl to the pedestal
• Lift off the toilet bowl and put it off to the side. Depending on the length of water hose that runs between the water valve at the foot pedal, you may need to loosed the hose clamp securing the water supply to the bowl.
• Separate the two wide gaskets that located between the bowl and pedestal and clean. Be careful not to damage the gaskets when cleaning. I found the edge of the screwdriver blade was sufficiently sharp to break and remove the crusted residue which has been causing water seepage past the seal. Clean the gaskets thoroughly.
• Clean the throw valve which the pedal operates during the "flush" cycle.
• Clean the water intake ports on the pedestal if there is any hard water build-up.
• Clean the pedestal top and bottom of the bowl mating surfaces.
• Reinstall all items in the reverse order aligning seals and bowl with the post "key" on the pedestal, making sure that the hole in the gaskets align with the water supply port in the pedestal. Do not overtighten the stainless steel clamp as it will hinder the proper return of the closing foot valve.
Time to completion: about half an hour.
Water Filters:
Water is very important to each and every one of us. We've found that some parks have less than acceptable water standards, particularly if you are planning to use it for drinking or food preparation. We recommends for those applications you use a reputable water filter for all shore connections. You can purchase these filters at RV parts stores, mail order catalogues, and most hardware stores.
Winter Storage:
When storing your RV for the winter,
• Unplug ALL appliances and disconnect all batteries. Some appliances draw electricity even when turned "off".
• Disconnect the ice maker water feed lines and drain.
• Drain the hot water heater and flush (see separate item below).
• After draining all water out of the fresh water system it's best to feed nontoxic RV antifreeze through the entire water system. I've found this can be accomplished with the use of a 'pressure pot' connected to the fresh water hookup, opening every tap until the antifreeze starts to flow. A cup of antifreeze in the sink and shower traps should finish the job. Remove any canned goods which might burst if frozen. Don't forget to check the antifreeze in the engine cooling system.
To protect your RV from ice or water damage many people use a tarp as a cover. You can use protective caps of cut up tennis balls, Styrofoam balls or similar material to prevent tarp damage from abrasion on sharp edges of the RV.
Cleaning the Hot Water Heater:
To extend the life of the hot water heater it's a good practice to flush out the heater tank every season. It's a simple process. Shut off the hot water heater and allow water in the tank to cool or run the hot water tap until it cools. Turn off the water supply to the coach and release the water pressure by opening up the "hot" faucets. Remove the access panel from the exterior of the RV and remove the hex headed plastic drain plug. Water will flow out the drain. If necessary, use a coat hanger to break up any sediment which may be blocking the opening. Direct high water pressure from a garden hose into the drain hole, swiveling from side to side to stir up the sediment in the tank. Remove the hose and let the tank drain. Repeat this filling and draining process with the garden hose until the water flushing from the tank is clean. Reinstall the drain plug, turn on the water supply and close the "hot" water taps when water has filled the tank and begins to flow from the taps.
A Must Read - Recommended by Arnold Donszelmann of Leisure RV in Millet Alberta
About the Author
How do reversible ratchets work exactly?
How do reversible ratchets work exactly, I am working on a design project and I am curious if anyone is willing to explain how a reversible ratchet works. I understand the concept of how a normal ratchet works, but I just don't see how it is possible that the reversible ratchet would work without pivoting the pawl in a different direction. From the diagrams I have seen, there seems to be an alternate mechanism do reverse the direction.
Any extra diagrams would be greatly appreciated. Thank you for you time~
Reversible ratchet mechanism
Abstract: A reversible ratchet mechanism includes a pair of roller clutches set to operate in opposite directions when engaged by a belt. During the forward motion of the ratchet assembly in either direction of propulsion of the belt, one roller clutch is disengaged while the other is engaged and locked, thereby propelling the belt. During the backward stroke, the engaged roller clutch is free to rotate. The result is that the reciprocating motion of the assembly is converted into the linear motion of the belt. The ratchet assembly includes a shift mechanism to reverse the engagement of the roller clutches and change the direction of propulsion of the belt produced by the push/pull action of the operator. The invention is advantageously used in conjunction with a wheelchair. (end of abstract)
http://www.freshpatents.com/Reversible-ratchet-mechanism-dt20061228ptan20060288810.php
http://www.freepatentsonline.com/5687820.html
Ratchet Driver, 4 to 1 Ratio. Tip Spins 4 times for every turn of the handle!