WO2014182273A1 - Appareil alternatif double - Google Patents

Appareil alternatif double Download PDF

Info

Publication number
WO2014182273A1
WO2014182273A1 PCT/US2013/039632 US2013039632W WO2014182273A1 WO 2014182273 A1 WO2014182273 A1 WO 2014182273A1 US 2013039632 W US2013039632 W US 2013039632W WO 2014182273 A1 WO2014182273 A1 WO 2014182273A1
Authority
WO
WIPO (PCT)
Prior art keywords
reciprocating
reciprocating saw
arm
wobble
blade
Prior art date
Application number
PCT/US2013/039632
Other languages
English (en)
Inventor
Trevor Jackson
Robert Soreo
Jason R. Ertel
Original Assignee
Infusion Brands International, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Infusion Brands International, Inc. filed Critical Infusion Brands International, Inc.
Priority to PCT/US2013/039632 priority Critical patent/WO2014182273A1/fr
Priority to ZA2014/07646A priority patent/ZA201407646B/en
Publication of WO2014182273A1 publication Critical patent/WO2014182273A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D49/00—Machines or devices for sawing with straight reciprocating saw blades, e.g. hacksaws
    • B23D49/003—Machines or devices for sawing with straight reciprocating saw blades, e.g. hacksaws having a plurality of saw blades or saw blades having plural cutting zones
    • B23D49/006—Machines or devices for sawing with straight reciprocating saw blades, e.g. hacksaws having a plurality of saw blades or saw blades having plural cutting zones with contiguous, oppositely reciprocating saw blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D51/00—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends
    • B23D51/16—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of drives or feed mechanisms for straight tools, e.g. saw blades, or bows

Definitions

  • the present invention is related to cutting devices, particularly directed to power saws, more particularly directed to a power saw that includes a plurality of saw blades that can be moved independently of one another, still more particularly to a power saw that includes two saw blades that can be simultaneously moved in opposite directions to one another during the cutting of material and, yet still more particularly, to blades that can be used with the power saw.
  • Reciprocating saws are known in the art and are used to cut many types of materials.
  • the serrated blade cuts materials as the blade reciprocates back and forth.
  • Most reciprocating tools are driven by an electric motor, such as reciprocating saws.
  • a rotating shaft or cam is generally used to cause the saw blade to reciprocate.
  • the reciprocating saw is driven by an electric motor that has a rotating output shaft. The rotating motion generated by the motor is then translated into reciprocating motion to move the saw blade.
  • 2007/0163415 2007/0151112; 2007/0131076; 2007/0101587; 2007/0068012; 2007/0000137;
  • the present invention is directed to a multi-blade reciprocating saw and blades for use with such saw that addresses the past deficiencies of prior art reciprocating saws.
  • the multi-blade reciprocating saw includes two reciprocating blades.
  • the size, shape, length, thickness and/or material of the reciprocating saw and saw blades used with the reciprocating saw are non-limiting.
  • the reciprocating saw blades used on the reciprocating saw generally have the same size, shape, length, thickness; however, this is not required.
  • the present invention is directed to reciprocating saws, more particularly directed to a reciprocating saw that includes a plurality of reciprocating saw blades that can be moved independently of one another and, still more particularly, to a reciprocating saw that includes two reciprocating saw blades that can be simultaneously moved in opposite directions to one another during the cutting of material.
  • the present invention pertains to the concept of including two reciprocating saw blades that can be reciprocated together in opposite directions from one another during the cutting of material.
  • the present invention contemplates a power tool that is dedicated for use with one or more reciprocating saw blades.
  • the ability to reciprocate two reciprocating saw blades in opposite directions from one another during the cutting of material can result in 1) improved cutting of material by the reciprocating saw blades, 2) reduction of the vibration caused by the cutting of material by the reciprocating saw blades and/or operation of the reciprocating saw and thereby reduce fatigue to the user when using the reciprocating saw and/or facilitate in the ease, quality and/or accuracy of a cut in a material during the use of the reciprocating saw, 3) improvements in the speed and/or accuracy of the cutting operation through a material, 4) reduction of the backward/forward forces on the user when using the reciprocating saw to cut through material and thereby reduce fatigue to the user when using the reciprocating saw and/or facilitate in the ease, quality and/or accuracy of a cut in a material during the use of the reciprocating saw, 5) reduction of the jerking actions caused by the reciprocating saw blade during the cutting operation and thereby reduce fatigue to the user when using the reciprocating saw and/or facilitate in the ease, quality and/or accuracy of a cut in a material during the use of
  • the reciprocating saw blades are caused to reciprocate in opposite directions to one another during the cutting of a material.
  • the speed or rate of reciprocation of the two reciprocating saw blades, when reciprocating in opposite directions, can be the same or different. In one non-limiting aspect of the invention, the speed or rate of reciprocation of the two reciprocating saw blades when reciprocating in opposite directions can be the same.
  • the two reciprocating saw blades can have the same or different length, tooth location and or shape.
  • the length of the two reciprocating saw blades is the same; however, this is not required.
  • the tooth location of the two reciprocating saw blades is the same; however, this is not required.
  • the tooth location is on the bottom edge of the reciprocating saw blade.
  • teeth can be positioned on both the top and bottom edge of the reciprocating saw blade; however, this is not required.
  • the shape of the two reciprocating saw blades is the same; however, this is not required.
  • the two reciprocating saw blades can be interchangeable with one another without affecting the operation of the reciprocating saw; however, this is not required.
  • the connection arrangement of the two reciprocating saw blades can be the same or different.
  • either reciprocating saw blade can be connected to the first or second blade carrying arm without affecting the operation of the reciprocating saw; however, this is not required.
  • one reciprocating saw blade can be designed to connect only to one of the blade-carrying arms and the other reciprocating saw blade can be designed to connect only to the other blade-carrying arm; however, this is not required.
  • the two reciprocating saw blades can include a tooth configuration that inhibits or prevents separation of the blades during the operation of the reciprocating saw.
  • the reciprocating saw can optionally include a quick connect/release arrangement for one or both reciprocating saw blades; however, this is not required.
  • the configuration of the quick connect/release arrangement, when included on the reciprocating saw, is non-limiting.
  • this is provided on one or more depressible buttons on the reciprocating saw to enable one or both reciprocating saw blades to be connected to and/or released from the blade-carrying arms on the reciprocating saw.
  • the location of the one or more buttons on the reciprocating saw is non-limiting.
  • one or more of the reciprocating saw blades can be connected to the blade-carrying arms on the reciprocating saw by use of a screw, a hex bolt, etc. instead of a blade-carrying arm on the reciprocating saw.
  • the configuration of the cutting teeth on the first and second reciprocating saw blades can be the same or different.
  • the teeth configuration on each of the reciprocating saw blades is the same.
  • the teeth configuration on each of the reciprocating saw blades is different.
  • the teeth configuration on one or both of the reciprocating saw blades enables the reciprocating saw blades to cut material when moving in both a forward and backward direction; however, this is not required.
  • the one or more teeth on one or both of the reciprocating saw blades angle outwardly from the central cutting axis of the reciprocating saw blades.
  • Such a reciprocating saw blade configuration can be used to 1) cause one or both reciprocating saw blades to move toward one another during the cutting of material, 2) facilitate in the movement of cut material away from one or both reciprocating saw blades, and/or 3) increase the ease of cutting through a material; however, this is not required.
  • the depth between the teeth can be the same or different along the longitudinal length of the reciprocating saw blade.
  • the height of the teeth along the longitudinal length of the reciprocating saw blade can be the same or different.
  • the configuration of the teeth of the inner and/or outer reciprocating saw blades is non-limiting.
  • the reciprocating saw is a dedicated tool for use with one or more reciprocating saw blades.
  • the reciprocating saw can be battery powered and/or powered by an AC current power cord.
  • the reciprocating saw when two reciprocating saw blades are connected to the reciprocating saw, the reciprocating saw includes gearing that enables the two reciprocating saw blades to reciprocate in opposite directions; however, this is not required.
  • the reciprocating saw can include gearing that enables the two reciprocating saw blades to be reciprocated in opposite directions at the same or different speeds.
  • the reciprocating saw can include one or more optional features such as, but not limited to, a "continuous on” button, a button to activate a light or laser, a level indicator, a speed controller, a "lock off button, battery powered motor, rechargeable battery, removable battery, vibration reducing hand grip, reducing vibration nose grip, reduced slip hand grip, tiltable handle, rotatable handle, etc.; however, this is not required.
  • the reciprocating saw can optionally include a laser or light switch to activate and/or deactivate one or more lights or lasers on the reciprocating saw.
  • the location of the switch and one or more lasers and/or lights on the reciprocating saw is non-limiting.
  • at least one laser and/or light is generally located at the front or front portion of the reciprocating saw to 1) illuminate a region about the reciprocating saw blades to facilitate in the illumination of the region to be cut by the reciprocating saw blades, and/or 2) create a guide line or cut line to facilitate in guiding the one or more reciprocating saw blades along the material to be cut; however, this is not required.
  • the laser or light switch is located on a region of the reciprocating saw that is grasped by the user (e.g., handle, etc.) when using the reciprocating saw; however, this is not required.
  • the laser or light switch can be designed to be a depressible or contact switch that automatically causes one or more laser and/or lights to illuminate when the reciprocating saw is grasped by the user during use of the reciprocating saw; however, this is not required.
  • the switch can be located on top of or hidden beneath an outer surface (e.g., soft outer surface grip, etc.) of the reciprocating saw.
  • the two reciprocating saw blades can optionally include a connector arrangement that connects the two reciprocating saw blades together and enables the two reciprocating saw blades to reciprocate in opposite directions.
  • the configuration of the connection arrangement is non- limiting.
  • the connection arrangement includes a pin and slot arrangement wherein one of the reciprocating saw blades includes a slot and the other reciprocating saw blade includes a pin that is designed to be moveable in the slot of the other reciprocating saw blade.
  • the pin may have a larger head (e.g., cone-shaped head, etc.) to retain the pin to the slot in the reciprocating blade during the operation of the two reciprocating saw blades; however, this is not required.
  • the connection arrangement when used, can be designed to facilitate in maintaining the spacing of the two reciprocating saw blades from each other during the operation of the reciprocating saw and/or the cutting of material by the two reciprocating saw blades.
  • the reciprocating saw optionally includes a gearing arrangement that enables the user to select a plurality of stroke options for the one or more reciprocating saw blades.
  • stroke is the difference between the maximum forward and rearward or backward position of the reciprocating saw blade during the operation of the reciprocating saw.
  • the gearing arrangement can be designed to enable two or more different stroke values to be used when cutting the material.
  • the one or more reciprocating saw blades can have a different stroke value by merely selecting the rotation direction of the motor of the reciprocating saw.
  • the stroke value of the one or more reciprocating saw blades can be a stoke value A (e.g., 0.75 inches, 1 inch, etc.), and when the motor is selected to operate in the counterclockwise direction, the stroke value of the one or more reciprocating saw blades can be a stroke value B (e.g., 0.5 inches, 0.25 inches, etc.).
  • the gear arrangement can be designed to change the stroke value or length without having to change the direction of the motor.
  • the reciprocating saw optionally includes a gearing arrangement that includes a dual wobble shaft and arm arrangement to enable two reciprocating saw blades to reciprocate in opposite directions during the operation of the reciprocating saw.
  • the gearing arrangement can include other arrangements that are absent a dual wobble shaft and arm arrangement to enable two reciprocating saw blades to reciprocate in opposite directions during the operation of the reciprocating saw.
  • the reciprocating saw can include a shoe that is used to facilitate in the use of the reciprocating saw.
  • the configuration of the shoe is non-limiting.
  • the shoe is generally positioned on the front end of the reciprocating saw.
  • the shoe, when used can be designed to be detachable from the body of the reciprocating saw; however, this is not required.
  • the shoe, when used can be tiltable/pivotable to allow for angled cutting of the material by the one or more reciprocating saw blades; however, this is not required.
  • the reciprocating saw can include one or more of the following features and/or advantages:
  • the reciprocating saw can be used with two reciprocating saw blades
  • the reciprocating saw blades can include teeth that allow the cutting action to be performed on both the forward and return stroke; however, this is not required;
  • the reciprocating saw blades can include custom blade and/or tooth designs for use on or with a variety of materials;
  • the reciprocating saw blades can be designed to move in an opposed reciprocating motion, and/or move in an orbiting or elliptical motion;
  • the reciprocating saw blades can result in an opposed cutting force to thereby balance the cutting action of the reciprocating saw
  • the reciprocating saw can be designed to improve accuracy, provide smoother cuts on work surfaces, and/or reduce fatigue on user;
  • the reciprocating saw can be designed to enable a user to attach or remove the reciprocating saw blades from the blade holders;
  • the reciprocating saw can be made from a variety of materials, including but not limited to metal, plastic, aluminum or recyclable material;
  • the reciprocating saw can be designed to enable the forwarding and reversing the motor to thereby change the stroke length of the reciprocating saw blades;
  • the reciprocating saw can be designed to include a rotating handle
  • the reciprocating saw can be designed to include a pivoting handle;
  • the reciprocating saw can be designed to be a handheld tool;
  • the reciprocating saw can be designed to include one or more electric motors; and,
  • the reciprocating saw can be designed to include reciprocating saw blades that have blade teeth on one or both sides of one or both reciprocating saw blades.
  • connection arrangement of the two reciprocating saw blades can be the same or different.
  • FIGURE 1 is a side elevation view of one non-limiting reciprocating saw in accordance with the present invention.
  • FIGURE 2 is an opposite side elevation view of the reciprocating saw of FIGURE 1;
  • FIGURE 3 is a top plan view of the reciprocating saw of FIGURE 1 ;
  • FIGURE 4 is a side view of the reciprocating saw of FIGURE 1;
  • FIGURES 5 and 6 are front elevation views of the non-limiting gear arrangement without the gear housing;
  • FIGURE 7 is a top plan view of the gear arrangement of FIGURE 5;
  • FIGURE 8 is a front view of the gear arrangement of FIGURE 5;
  • FIGURE 9 is an exploded view of the gear arrangement
  • FIGURE 10 is a front elevation view of two reciprocating blades connected to the quick blade disconnect on the ends of the reciprocating arms;
  • FIGURE 11 is an exploded view of the quick blade disconnect
  • FIGURE 12 is front elevation view of a motor assembly that is connected to another non-limiting gear arrangement in accordance with the present invention.
  • FIGURE 13 is front elevation view of the gear arrangement of FIGURE 12;
  • FIGURE 14 is an exploded view of the gear arrangement of FIGURE 13;
  • FIGURE 15 is a cross-sectional view of the guide block of the gear arrangement of FIGURE 13;
  • FIGURE 16 is front elevation view of another non-limiting gear arrangement in accordance with the present invention that can be connected to the gear arrangement of FIGURE 12;
  • FIGURE 17 is an exploded view of the gear arrangement of FIGURE 16;
  • FIGURE 18 is a cross-sectional view of the guide block of the gear arrangement of FIGURE 16;
  • FIGURE 19 is front elevation view of another non-limiting gear arrangement in accordance with the present invention that can be connected to the gear arrangement of FIGURE 12;
  • FIGURE 20 is an exploded view of the gear arrangement of FIGURE 19; and, FIGURE 21 is a cross-sectional view of the guide block of the gear arrangement of
  • FIGURE 19
  • FIGURES 1-22 illustrate non-limiting embodiments of the reciprocating saw in accordance with the present invention.
  • FIGURES 1-4 illustrate one non-limiting body 110 of a reciprocating saw 100 in accordance with the present invention.
  • the non-limiting body of the reciprocating saw includes a handle 130 that can optionally pivot and/or rotate relative to the main body portion 120 of the body of the reciprocating saw.
  • the handle 130 of the body of the reciprocating saw can be fixed or can only rotate relative to the main body portion 120 of the body 110 of the reciprocating saw 100.
  • the shape of the body of the reciprocating saw 100 is non-limiting.
  • the main body portion and/or the handle can be formed of one or more parts.
  • the parts can be connected together by a variety of means (e.g., adhesive, solder bond, melt bond, weld bead, rivet, screw, nut and bolt, snap lock arrangement, clamp arrangement, etc.).
  • reciprocating saw 100 is designed to be a handheld power tool; however, it can be appreciated that reciprocating saw 100 can be designed to be secured to a robotic or fixed to some type of machine.
  • the handle 130 is designed to enable a user to grasp the reciprocating saw at one end during use.
  • the configuration of the handle is non-limiting.
  • Handle 130 can optionally include a rotate button that enables the handle to be rotated relative to the main body portion of the reciprocating saw.
  • the size, shape, operation, and location of the rotate button are non-limiting.
  • the rotate button can be positioned on the main body portion 120 instead of handle 130.
  • the handle can be designed to be rotated between two different positions or a plurality of different positions. Generally, when the handle is in a non-rotated position, the degree of rotation is considered to be a ff position.
  • the handle When the handle is designed to be rotated in four positions, such positions are generally the Cf, 90°, 180° and 270° positions. As can be appreciated, the handle can be designed to be positioned in other or additional positions (e.g., 3 ⁇ , 6 ⁇ , 12 ⁇ , 15 ⁇ , 2 ⁇ , 24 ⁇ , 30 ⁇ , 33 ⁇ , etc.).
  • the rotate button is designed to be depressed to release a handle locking mechanism to thereby allow the handle to be rotated to a desired position. The release or movement of the rotate button to its original position can be designed to result in the locking of the handle in position.
  • a pivot button can be located in the handle or on the main body portion.
  • the handle can optionally include a slot that facilitates in the pivoting movement of the handle; however, other or additional arrangements can be used to facilitate in the pivoting of the handle.
  • the handle when pivotable, can be designed to be moved at certain set pivoting angles; however, this is not required.
  • the handle can optionally include a gripping surface 150 to facilitate in the gripping of the reciprocating saw by the user.
  • the type of material, location of the grip on the handle, the style of the grip, and the configuration of the grip are non-limiting.
  • the main body portion can also optionally include a gripping surface 126; however, this is not required.
  • all or a portion of the front of the main body portion of the body of the reciprocating saw can be covered with, or include a soft gripping material and/or other type of gripping material.
  • Such gripping material can be used to facilitate in grasping and/or guiding the reciprocating saw during use and/or to reduce vibration to the user during the use of the reciprocating saw.
  • the gripping material on the main body portion and the handle can be made of the same or different material and/or have the same or different surface gripping features.
  • the reciprocating saw can be powered by a battery, a power cord, etc.
  • the battery can be a rechargeable battery, a removable battery, etc.; however, this is not required.
  • the one or more batteries, when used, can be located in the handle and/or main body portion.
  • the power cord is generally connected to the handle; however, this is not required.
  • the size, shape and location of the one or more batteries, when used, are non-limiting.
  • the handle generally includes a power button 160 that is used to activate the one or more electric motors that are located partially or fully within the body of the reciprocating saw.
  • the size, location and orientation of the one or more motors in the body of the reciprocating saw is non-limiting.
  • the speed at which the one or more motors operate is also non-limiting.
  • the power button is generally a depressible button.
  • other or additional types of activation arrangements e.g., slide switch, etc.
  • the size, shape, operation, and location of the power button are non- limiting.
  • the power button can be designed to vary the speed of the one or more electric motors based on the amount the power button is depressed by the user; however, this is not required.
  • the reciprocating saw can be a multi-speed reciprocating saw or a single speed reciprocating saw.
  • a lock button 172 can optionally be positioned on the handle and/or main body portion of the reciprocating saw to prevent the depression of the power button and/or to lock the power button in an "on" position.
  • the size, shape, operation, and location of the lock button are non-limiting.
  • the handle or main body portion of the reciprocating saw can optionally include a stroke adjustment button.
  • the reciprocating saw can be designed to be a single stroke reciprocating saw or a multi-stroke reciprocating saw.
  • a button, knob, switch or the like can be used to select the available stroke options of the reciprocating saw.
  • the size, shape, operation and location of the button, knob, switch, etc. on the handle or main body portion of the reciprocating saw is non- limiting.
  • the stroke adjustment button when used, can be located on the handle of the reciprocating saw; however, this is not required.
  • the main body portion can optionally include one or more vent openings 180 to allow for air flow into and/or out of the interior of the main body to enable cooling of one or more components (e.g., motor, etc.) in the main body.
  • the number, shape and/or location of the one or more vent openings on the main body portion of the reciprocating saw are non- limiting.
  • a shoe 190 can be connected to the front end 122 of the main body portion; however, this is not required.
  • the shoe when used, can function as a position guide during the cutting of material.
  • the shoe can also or alternatively be used to protect the front end 122 from damage during the cutting of material and/or to limit the amount of material that enters a cavity 124 in the front end 122 of the main body portion of the reciprocating saw portion; however, this is not required.
  • the shoe when used, can function as a space limiter to ensure proper spacing of the front end 122 from the material to be cut and/or to ensure the desired blade portion of the reciprocating saw blades is used to cut material; however, this is not required.
  • the shoe can have other or additional functions.
  • the shape of the shoe is non-limiting.
  • the shoe generally includes an opening 192 or slot to enable the reciprocating saw blades to pass through the shoe.
  • the shoe can be movably connected to front end 122 or be non-mo vably connected to front end 122.
  • the opening or slot in the shoe can be shaped and/or markers can be positioned about the opening or slot to function as a guide or a positioning feature to enable the user to cut a material in a desired location; however, this is not required.
  • a light and/or laser is used on the reciprocating saw, the light and/or laser can be directed to shine light into and/or about an opening or slot; however, this is not required.
  • the reciprocating saw can include a quick blade release button; however, this is not required.
  • the quick blade release button when used, can be positioned near the front end of the main body portion; however, this is not required.
  • the size, shape, operation, and location of the quick blade release button are non-limiting.
  • the quick blade release button can be designed that when depressed, the release button causes the reciprocating saw blades to become unlocked and removable from the main body portion of the reciprocating saw; however, this is not required.
  • the quick blade release button can also be designed to be depressed so as to allow the reciprocating saw blades to be connected to the main body portion of the reciprocating saw; however, this is not required.
  • the type of quick disconnect arrangement used for the blades is non-limiting.
  • One non-limiting quick disconnect arrangement can be a tool-less blade removal system.
  • each front opening is designed to receive a rear portion of a reciprocating saw blade.
  • the rear portion of the saw blades can include a connection notch that is designed to engage a lock finger on pivot arms of the quick disconnect arrangement.
  • the pivot arms can be biased by a spring or other means in a locked position.
  • the pivot arms can be designed to pivot on a pivot pin or on some other means.
  • the pivot arms can optionally include a raised back portion that can be caused to be pushed downwardly when the quick blade release button is depressed by a user.
  • the lock fingers on pivot arms can be caused to lift from the connection notches of the two reciprocating saw blades, thereby enabling the reciprocatmg saw blades to be removed from the reciprocating saw.
  • the lifting of the lock fingers of pivot arms can also be used to enable the two reciprocating saw blades to be connected to the reciprocating saw.
  • the quick blade release button can be released and a spring causes the lock fingers of pivot arms to lower into the connection notches of the two reciprocating saw blades to thereby lock the two reciprocating saw blades in the housing of the quick disconnect arrangement.
  • other arrangements can be used to quickly connect and/or disconnect one or both reciprocating saw blades from the main body portion of the reciprocating saw.
  • a quick disconnect arrangement is not required for use on the reciprocating saw.
  • the one or more reciprocating saw blades can be connected/disconnected from the main body of the reciprocating saw by use of washers, hex screws, etc. which require tools (e.g., screw driver, pliers, wrench, etc.) to remove and/or attach one or both reciprocating saw blades to the main body of the reciprocating saw.
  • the reciprocating saw can optionally include a light or laser that can be used to guide the reciprocating saw blades during the cutting of material and/or illuminate the material during the cutting of the material.
  • the light or laser can be activated by a switch that is located on the handle and/or main body portion of the reciprocatmg saw.
  • the switch is positioned beneath the surface of the handle and is designed to be activated and cause the light or laser to illuminate when a user grasps the handle and to turn off when the user releases the handle; however, this is not required.
  • a switch can be positioned on the handle or main body portion to enable a user to manually activate/deactivate the light or laser.
  • the size, shape, operation, and location of switch are non-limiting.
  • the light or laser can be positioned so as to direct light at or through the opening 192 in shoe 190; however, this is not required. As can be appreciated, the light or laser can be positioned above or below the shoe, or on the top, bottom or one or both side surfaces of the main body portion. As can be appreciated, the dual reciprocating saw can include a light and laser, multiple lights, and/or multiple lasers.
  • reciprocating saw blades can be used with the reciprocating saw. Different types of reciprocating saw blades can be configured to facilitate in the cutting of different types of material.
  • the blades generally include teeth on one side of the reciprocating saw blades; it will be appreciated that teeth can be positioned on both sides of the reciprocating saw blades.
  • the tooth configuration on the reciprocating saw blades can also be customized for use in cutting different types of materials.
  • the reciprocating saw of the present invention can be use with one or two reciprocating saw blades.
  • the reciprocating saw blades may or may not be connected together.
  • Many different arrangements can be used to connect the reciprocating saw blades together.
  • One non-limiting arrangement is a pin and slot arrangement.
  • One or both blades can include a spacer arrangement that maintains the distance of the reciprocating saw blades from one another during the operation of the reciprocating saw; however, this is not required.
  • Many arrangements can be used for the spaces arrangement (e.g., rib, pin, roller bearing, etc.), when used on one or both reciprocating saw blades.
  • the configuration of the teeth on the reciprocating saw blades is non-limiting.
  • the reciprocating saw blades may or may not include cutting teeth.
  • the teeth on the reciprocating saw blades can be located on one side or both sides of the reciprocating saw blades.
  • One or more teeth on the reciprocating saw blades can angle outwardly from the body of the reciprocating saw blades so as to extend beyond the body of the reciprocating saw blades; however, this is not required.
  • every tooth angles outwardly so as to extend beyond the body of the reciprocating saw blades In another non-limiting reciprocating saw blade, every other tooth angles outwardly so as to extend beyond the body of the reciprocating saw blades.
  • every third or fourth tooth angles outwardly so as to extend beyond the body of the reciprocating saw blades can be configured on one or both reciprocating saw blade so that the teeth angle outwardly so as to extend beyond the body of the reciprocating saw blades such that a wave or snake-like pattern is formed by the teeth along all or a portion of the longitudinal length of the reciprocating saw blade; however, this is not required.
  • the degree that the one or more teeth angle outwardly is non-limiting.
  • the degree that different teeth angle outwardly can be the same or different on each reciprocating saw blade.
  • the teeth configuration and teeth angle on each of the two reciprocating saw blades can be the same or different along the longitudinal length of the reciprocating saw blades.
  • the tip of the tooth is off center of the longitudinal axis of the reciprocating saw blade by about 0.001-0.1 inches, typically about 0.005-0.05 inches and, more typically, about 0.005-0.03 inches; however, it can be appreciated that different values can be used on the reciprocating saw blades.
  • One or more teeth on the reciprocating saw blades can optionally be configured to include a forward and rearward facing cutting edge for cutting in both forward and backward movements of the reciprocating saw blades.
  • the teeth have a general V-shaped profile; however other profiles can be used (e.g., W profile, inverted V-shape, inverted W-shape, M- shape, etc.).
  • the tips of the teeth can be rounded; however, it can be appreciated that the tips of one or more of the teeth can be pointed.
  • the side edges of the teeth are tapered; however, this is not required.
  • the taper on the front and/or rear side edge of one or more teeth on one or both reciprocating saw blades can be used to 1) improve the cutting of material by one or both reciprocating saw blades, and/or 2) create an inward force that causes one or both reciprocating saw blades to move toward one another during the cutting of material; however, this is not required.
  • tooth tapering can also be included on the blade teeth; however, this is not required.
  • the taper, when used, can be on the front portion of the tooth, the back portion of the tooth, or on both the front and back portion.
  • the taper, when used is generally located on the outer side of the tooth; however, it can be appreciated that the taper can be located on the inner side of the tooth or on both the inner and outer side of the tooth.
  • the top edge of one or more teeth can also include tapered surfaces.
  • the top of the teeth can be generally flat; however, it can be appreciated that the profile of the top of the teeth can have other profiles (e.g., V shaped, W shaped, inverted V-shape, inverted W-shape, M-shape, etc.).
  • the height of the teeth on the reciprocating saw blades can be the same of different.
  • the reciprocating saw blades can include a rear end portion that is designed to be connected and disconnected from the reciprocating saw.
  • the end portion can include a connection opening that enables a pin or other type of structure on the reciprocating saw to engage and secure the reciprocating saw blades to the reciprocating saw; however, this is not required.
  • the size and shape of the connection opening is non-limiting.
  • the location of the connection opening on the end portion is non-limiting.
  • the opening is spaced from the end of the reciprocating saw blade; however, that is not required.
  • the connection arrangement used on reciprocating blades can be the same for both reciprocating blades; however, this is not required.
  • the end portion can optionally include a leg that can be used as a guide and/or securing/positioning structure for securing the reciprocating saw blades to the reciprocating saw.
  • the shape and/or size of the leg is non- limiting.
  • the teeth of the reciprocating blade can have a special configuration that is designed to cut through various types of materials with little or no blade separation.
  • the spacing of the tips of adjacently positioned teeth is generally about 0.1-0.3 inches, typically 0.15-0.25 inches and, more typically, about 0.196 inches; however, other spacings can be used.
  • the ratio of the spacing of tips of adjacently positioned teeth to the total length of the blade that includes teeth is about 0.01-0.1:1, typically about 0.01-0.05:1, more typically about 0.015-0.035:1 and, still more typically, about 0.02-0.03:1; however, other ratios can be used.
  • the space of tips of adjacently positioned teeth can be uniformly or non-uniformly spaced from one another along the longitudinal length of the one or both reciprocating saw blades.
  • the spacing and teeth pattern of reciprocating saw blades are generally the same; however, this is not required.
  • the tooth depth of the teeth on reciprocating saw blades can be uniform or non-uniform. When the tooth depth is not uniform, the ratio of the shallow depth to the deeper depth is about 0.1-0.95:1, typically about 0.2-0.8:1, more typically about 0.3- 0.7:1, still more typically about 0.4-0.6:1 and, yet still more typically, about 0.45-0.55:1; however, other ratios can be used. Two or more different tooth depths can exist on the reciprocating saw blade.
  • the radius of curvature between adjacently positioned teeth can be the same or different along the longitudinal length of the one or both of the reciprocating saw blades.
  • the radius of curvature between the teeth having a deeper tooth depth can be less than the radius of curvature between the teeth having the shallower tooth depth; however, this is not required.
  • the ratio of the radius of curvature of the teeth having a deeper tooth depth to the radius of curvature between the teeth having the shallower tooth depth is about 0.5-1.5:1, typically about 0.6-1 :1, more typically about 0.65-0.99:1, yet more typically about 0.7-0.9:1 and, still more typically, about 0.72-0.8:1; however, other ratios can be used.
  • the radius of curvature is generally uniform between adjacently positioned teeth; however, this is not required.
  • the reciprocating saw blade can include more teeth having the shallower tooth depth than teeth having the greater tooth depth; however, this is not required.
  • the teeth having the shallower tooth depth can be positioned at the front end of the reciprocating saw blades; however, this is not required.
  • the teeth can include a sloped face; however this is not required.
  • the angle of slope for the teeth can be the same or different.
  • the angle of slope can be on one or both sides of the teeth.
  • the angle can be uniform or non-uniform along the length of each side of the tooth.
  • the surface area of the sloped portion can be constant or vary along the length of each side of the tooth.
  • the slope angle on the teeth having a deeper tooth depth is less than the slope angle on the teeth having the shallower tooth depth; however, this is not required.
  • the slope angle on the teeth having a deeper tooth depth is about 2-30°, typically about 5-25, more typically about 10-20° and, even more typically, about 12-18"; however, other angles can be used.
  • the slope angle on the teeth having a shallower tooth depth is about 2-50°, typically about 5-40°, more typically about 10-35°, even more typically about 15-35, still even more typically about 20-3Zand, yet still even more typically about 25-30°; however, other angles can be used.
  • the ratio of the slope angle on the teeth having a deeper tooth depth to the slope angle on the teeth having the shallower tooth depth is about 0.2-1.3:1, typically about 0.3-1 :1, more typically about 0.30-0.95:1, still more typically about 0.35-0.9:1, yet still more typically about 0.4-0.75:1 and, still yet more typically, about 0.45-0.6:1; however, other ratios can be used.
  • the teeth can be oriented to be parallel to the longitudinal axis of the reciprocating saw blade or be at some angle to the longitudinal axis of the reciprocating saw blade.
  • the angle of each of the teeth can be the same or different along the longitudinal axis of the reciprocating saw blade.
  • the teeth can be positioned at an angle to the longitudinal axis of the reciprocating saw blade.
  • Two or more teeth can be angled the same direction or opposite direction.
  • the teeth when angled, can be optionally angled at the same or similar angle.
  • the angle is generally about 2-40°, typically about 5-30° and, more typically, about 15- 30°; however, other angles can be used.
  • the tip of the teeth on the reciprocating saw blades can generally lie in the same plane; however, this is not required.
  • the tip of the reciprocating saw blades can have a generally pointed shape.
  • the slope angle on both sides of the tip can be the same or different. In one non-limiting embodiment, the slope angle on the top surface of the tip is greater than the slope angle on bottom surface of the tip; however, this is not required.
  • the slope angle on the top surface of the tip for the reciprocating saw blades is about 30-60°, typically 35-55, more typically about 40-50°; however, other angles can be used.
  • the slope angle on the bottom surface of the tip for the reciprocating saw blades is about 20-50", typically 25-40°, more typically about 30-35°; however, other angles can be used.
  • the top surface of the tips on the reciprocating saw blades that are located on the opposite side of the tips can be parallel or non-parallel to the plane of the tooth teeth. Generally, a majority of the top surface of the reciprocating saw blades is parallel to the plane of the tooth teeth.
  • a portion of the top surface of the reciprocating saw blades is parallel to the plane of the tooth teeth and another portion of the top surface of the reciprocating saw blades is non-parallel to the plane of the tooth teeth.
  • the length ratio of the portion of the top surface of the reciprocating saw blades that is parallel to the plane of the tooth teeth to the other portion of the top surface of the reciprocating saw blades that is non-parallel to the plane of the tooth teeth is about 0.9-100:1, typically 1-10:1, more typically about 1.01-10:1, still more typically about 1.05-4:1, yet more typically about 1.05-2:1 and, still yet more typically, about 1.1-1.5:1; however, other ratios can be used.
  • the top portion of the reciprocating saw blades that is non-parallel to the plane of the tooth teeth is generally located at the front portion of the reciprocating saw blade; however, this is not required.
  • the angle of the slope of the top portion of the reciprocating saw blades that is non-parallel to the plane of the tooth teeth is generally about 1-25, typically about 2-20°, more typically about 2-10° and, still more typically, about 3-7; however, other angles can be used.
  • the back end of the reciprocating saw blades can optionally include a thicker reinforcement section used to provide rigidity to the saw blades and/or facilitate in connecting the saw blades to the reciprocating saw; however, this is not required.
  • the gear arrangement used to cause one or both reciprocating saw blades to reciprocate is non-limiting.
  • the gear arrangement can be designed to cause one or both reciprocating saw blades to reciprocate in a single plane, or cause one or both reciprocating saw blades to travel an elliptical or orbital path during the reciprocation of one or both reciprocating saw blades.
  • When two reciprocating saw blades are reciprocated by the reciprocating saw generally both reciprocating saw blades move in the same path or plane; however, this is not required.
  • FIGURES 5-9 illustrate one non-limiting gear arrangement 300 that is for a single- stroke operation of the reciprocating saw.
  • this gear arrangement can be modified for create a multi-stroke operation for the reciprocating saw.
  • Motor 200 is used to drive the novel gearing in gear arrangement 300 to cause one or two reciprocating saw blades (not shown) to reciprocate when the motor is operating.
  • the gear arrangement is designed to cause the two reciprocating saw blades to reciprocate in opposite directions.
  • Many different gear arrangements can be used to cause the two reciprocating saw blades to reciprocate in opposite directions.
  • Motor 200 can be a brush or brushless motor.
  • the size, shape and power output of the motor is non-limiting.
  • the motor 200 generally includes a stator 202 that is designed to receive an armature 204.
  • a motor shaft 206 is designed to be partially inserted through the armature.
  • Positioned near the back end of the motor shaft is the commutator 208.
  • the front end of the motor shaft includes teeth 210.
  • a pair of brush holders 212, 214, when used, are positioned on the sides of the commutator.
  • Attached to the back end of the motor shaft is a pair of optional bearings 220, 222.
  • An optional dust guard 230 can be positioned at the front of the stator.
  • An optional cooling fan 240 can be connected to the motor shaft and positioned in front of the dust guard.
  • the motor can have other or additional components. The operation of an electric motor is well known in the art, thus will not be described herein.
  • the gear arrangement 300 includes a front and rear gear housing 310, 320.
  • the size, shape and materials of the front and rear gear housing are non-limiting.
  • the front and rear gear housing are connected together by screws 328; however, other means can be used.
  • the rear gear housing includes an opening 322 to enable the end of the motor shaft 206 to pass through the rear gear housing.
  • the rear gear housing can include two top cavities 324 and two bottom cavities 326; however, this is not required.
  • the two top cavities can be designed to receive bushings and the two bottom cavities can be designed to receive bearings; however, this is not required.
  • a front bushing 330 can be designed to connect to the motor shaft that extends through the rear gear housing; however, this is not required.
  • Bearings 340 can be designed to be inserted into bottom cavities 326; however, this is not required.
  • main drive gears 350 Positioned on the face of bearings 340 are main drive gears 350. As illustrated in FIGURE 8, both of the main drive gears contact the teeth 210 on the motor shaft. When the motor shaft rotates, such rotation causes the two main drive gears to rotate in opposite directions; however, this is not required.
  • Each of the main drive gears includes an opening 352 and a key slot 354; however, this is not required. The opening is designed to receive the rear end 362 of wobble shaft 360.
  • the rear end 362 of wobble shaft 360 can include a key nub 364 that is received by key slot 354 so as to lock the wobble shaft to the main drive gear and to cause the wobble shaft to rotate with the main drive gear; however, this is not required.
  • the front end 366 of the wobble shaft can be designed to receive a rear wobble bearing 370; however, this is not required.
  • the rear wobble bearing 370 is designed to fit in a cavity 382 of wobble arm 380; however, this is not required. Cavity 382 of the wobble arm 380 is also designed to receive a front wobble bearing 390.
  • the front end 366 of the wobble shaft is also designed to receive front wobble bearing 390 when both the rear and front wobble bearings are positioned in cavity 382 of wobble arm 380.
  • Snap ring 400 is designed to maintain front wobble bearing 390 in cavity 382; however, this is not required.
  • Snap ring 410 is designed to be connected to a front portion of the wobble shaft; however, this is not required.
  • a bushing 420 is positioned on the front end of wobble shaft 360; however, this is not required.
  • a bearing 430 is positioned on bushing 420 and a shoulder bolt 440 is used to secure the bearing 430 on bushing 420; however, this is not required.
  • the front end of the shoulder bolt is designed to be connected on opening 388 in the front end of the wobble shaft 360; however, this is not required.
  • Bearings 450 are designed to be inserted into top cavities 324; however, this is not required.
  • the front and gear housing 310 includes openings 312 that are designed to allow the body of the reciprocating arms 460 to pass through the openings 312.
  • the rear end of the reciprocating arm includes a slot 462 that is designed to connect to a tip 386 on the leg 384 of wobble arm 380; however, other arrangements can be used to connect the wobble arm to the reciprocating arm.
  • a rod guide 470 is positioned about the body of the two reciprocating arms 460 and is located between the front and rear gear housing 310, 320; however, this is not required.
  • the rod guide includes a slot 472 that allows tip 386 on the leg 384 of wobble arm 380 to pass into the interior of the rod guide and to engage the reciprocating arm 460.
  • the length of slot provides a limit to the distance the each reciprocating arms can reciprocate.
  • Two sets of bushings 480, 490 and a rod guide 500 are designed to be inserted about the body of each reciprocating arm 460 so as to facilitate in the movement of each reciprocating arm in the rod guide; however, this is not required.
  • O-rings 510 and an o-ring cap via a connector 530 are used to maintain bushing 490 in the rod guide; however, this is not required.
  • FIGURES 10 and 11 provide a detailed illustration of one non- limiting quick blade disconnect in accordance with the present invention.
  • blades 700 are designed to be able to be connected and disconnected from the quick blade disconnect.
  • the blades illustrated in FIGURES 10 and 11 are merely representative blades for purposes of describing the quick blade disconnect.
  • the blades are illustrated as not including teeth; however, it can be appreciated that the blades typically include teeth in a configuration that was described above.
  • the profile of the blades is also non-limiting.
  • the material in which the blades are made e.g., stainless steel, etc. is not limiting.
  • the blades can optionally include a pin 702 and slot arrangement 704 to maintain blade spacing and/or to facilitate in maintaining the blades together during a cutting process; however, this is not required.
  • the blades could optionally include a pin 703 and slot arrangement 705 that do not lock together, but still can be used for blade spacing purposes and/or to facilitate in maintaining the blades together during a cutting process; however, this is not required.
  • the rear of each of the blades includes an attachment leg 706.
  • Each attachment leg includes a rear extension 708, a placement notch 710, and a lock opening 712.
  • the attachment leg can have other or additional configurations.
  • the rear extension 708, when used, is generally used to guide the attachment leg into the quick blade disconnect; however, the rear extension can have other or additional functions.
  • the notch, when used, is generally used to indicate that the blade has been fully inserted into the quick blade disconnect; however, the notch can have other or additional functions.
  • the lock opening, when used, is generally used to secure the blade in the quick blade disconnect; however, the lock opening can have other or additional functions.
  • the quick blade disconnect includes a release arm 610, a return spring, 612, a quick change head 614, a pin, 616, and a blade retainer 618.
  • the quick change head 614 is designed to be connected to the front end 664 of the reciprocating arms. Connectors (e.g., screw, rivet, bolt, etc.) can be used to connect the quick change head 614 to the front end 664 via openings 666 and 615; however, other or additional arrangements can be used to connect the quick change head 614 to the front end 664.
  • the release arm 610 is designed to be connected to the quick change head and biased in a lock position via spring 612. As can be appreciated, the release arm 610 is not required to be biasly connected to the quick change head.
  • the blade retainer is also designed to be connected to the quick change head; however, this not required.
  • the quick change head 614 can include guide flanges 613 that can be used to maintain the position of the attachment leg 706 of the blade relative to the quick change head; however, this is not required.
  • the movement of the release arm 610 from the lock position to the unlocked position is designed to cause the end 617 of pin 616 to move from engagement with opening 712 of blade 700 when in the lock position to a position that is not in engagement with opening 712 of blade 700 when in the unlock position.
  • the end 617 of the pin is designed to be partially or fully inserted into opening 712 of blade 700 when in the lock position to thereby secure the blade in the quick change head and blade retainer.
  • the blade retainer can include top and bottom flanges 620, 622 that are designed to connect the blade retainer to the body of the quick change head 614; however, this is not required.
  • the blade retainer can optionally include a guide flange 624 that can be used to guide the attachment leg 706 of the blade onto the quick change head 614.
  • the guide flange 624 can optionally include an angled or beveled end portion to further facilitate in the guiding of the attachment leg 706 of the blade onto the quick change head 614.
  • the rotation or the pulling of the release arm to the unlock position causes the end of the pin to move toward the quick change head and to thereby first release from opening 619 of blade retainer 618, and then subsequently release from opening 712 in the blade 700.
  • the blade can be removed from the quick change head 614.
  • the end of the attachment leg 706 of the blade is moved partially into quick change head 614.
  • the guide flanges 613 can be used to properly guide in the attachment leg 706 onto the quick change head.
  • the release arm is rotated or pulled to the unlock position to cause the end of the pin to move toward the quick change head.
  • the attachment leg 706 of the blade can be fully moved into quick change head 614.
  • the release arm is released or rotated to the lock position to cause the end of the pin to move away from the quick change head and to engage the opening 712 in the blade 700 and then to engage opening 619 of blade retainer 618 to thereby secure the blade in the quick blade disconnect.
  • the spring 612 can be used to bias the release arm in the locked position.
  • the wobble shaft connected to each of the main drive gears is caused to rotate. Due to the angular orientation of front end 366 of the wobble shaft relative to the axis of rotation of the main drive gears, in combination with the shape of cavity 382 of wobble arm 380, the leg 384 of wobble arm is caused to move back and forth as the front end portion of the wobble shaft rotates in the interior of cavity 382.
  • the central axis of cavity 382 of the wobble arm is at some non-perpendicular angle relative to the longitudinal axis of the leg of the wobble arm.
  • the angle is about lff-80 0 , and typically about 2CF-70'.
  • the two wobble arms have generally the same configuration but one wobble arm is rotated 180° relative to the other wobble arm; however, this is not required.
  • Slot 472 of rod guide 470 ensures that the end of leg 384 of wobble arm 380 moves in the desired plane as the leg moves back and forth.
  • the both wobble shafts and the wobble arms are oriented such that the two reciprocating arms are moving in the desired direction to one another.
  • the two reciprocating arms are designed to move in opposite directions to one another during a full stroke of the arms; however, this is not required.
  • FIGURES 12-15 illustrate another non-limiting gear arrangement 900 that is for a single-stroke operation of the reciprocating saw.
  • this gear arrangement can be modified for create a multi-stroke operation for the reciprocating saw.
  • Motor 800 is used to drive the novel gearing in gear arrangement 800 to cause one or two reciprocating saw blades 802, 804 to reciprocate when the motor is operating.
  • the gear arrangement is designed to cause the two reciprocating saw blades to reciprocate in opposite directions.
  • Motor 800 can be a brush or brushless motor.
  • the size, shape and power output of the motor is non-limiting.
  • the motor generally includes a stator that is designed to receive an armature.
  • a motor shaft is designed to be partially inserted through the armature.
  • Positioned near the back end of the motor shaft is generally commutator.
  • the front end of the motor shaft generally includes teeth; however, this is not required.
  • a pair of brush holders, when used, can be positioned on the sides of the commutator. Attached to the back end of the motor shaft can be a pair of optional bearings.
  • An optional dust guard can be positioned at the front of the stator.
  • An optional cooling fan 806 can be connected to the motor shaft and positioned in front of the dust guard.
  • the motor can have other or additional components. The operation of an electric motor is well known in the art, thus will not be described herein.
  • the gear arrangement 900 is connected to a gear platform 810.
  • the size and configuration of the gear platform is non-limiting.
  • the gear arrangement 900 includes a main cam 910 that is caused to be rotated by motor 800.
  • the arrangements to cause main cam 910 to be rotated by motor 800 when the motor is activated is non-limiting.
  • Positioned about the main cam is a main cam bearing 920.
  • the main can includes an opening 912 that is designed to receive a crank bearing 930.
  • the main cam also includes an opening 914 that is designed to receive a cam pin 940.
  • the cam pin is used to connect a right stroke cam 950 to the bottom side of the main cam.
  • a cam pin 942 is used to connect a left strike cam 960 within the bottom portion of opening 912 of the main cam.
  • Right stroke cam 950 is designed to connect to crank bearing 970 which is in turn positioned in opening 982 of right crank arm 980.
  • Right stroke cam 950 is designed to swivel in opening 912 and move to one side or another side of opening 912 depending on the rotational direction of the motor shaft of motor 800. For instance, when the motor shaft rotates in a clockwise direction, the right stroke cam is caused to move to a first rotational position in opening 912. When the motor shaft rotates in a counterclockwise direction, the right stroke cam is caused to move to a second rotational position in opening 912.
  • the stroke length of the blades can be long than when the right stroke cam is located on the other side of the opening 912.
  • the stroke length can of the blades 802, 804 can be changed by changing the rotational direction of the motor shaft.
  • the movement of the right stroke cam to a first rotational position in opening 912 will cause the crank bearing 930 be positioned differently on opening 912 as compared to be the movement of the right stroke cam to a second rotational position in opening 912.
  • Left stroke cam 960 is designed to connect to crank bearing 930 which is in turn positioned in opening 992 of right crank arm 990.
  • a crank arm cap 994 can optionally insert onto the top of crank bearing 930 and/or right crank arm 990.
  • the right crank arm 980 includes an opening 984 that is designed to connect to a leg, not shown, on right reciprocating arm 1000.
  • the left crank arm 990 includes an opening 994 that is designed to connect to a leg 1012 on left reciprocating arm 1010. The rotation of the main cam thus causes the left and right reciprocating arms to move back and forth, thereby causing blades 802 and 804 to reciprocate when the motor is activated.
  • a guide block 1100 is used to ensure that the left and right reciprocating arms move parallel to one another while being driven by main cam 910; however, this is not required.
  • the design for the guide block, when used, is non-limiting.
  • the guide block includes an upper slide block 1110 that is connected to a lower slide block 1120. Screws 1130 or other types of connectors are used to connect together the upper and lower slide block.
  • An upper plate 1140 can be connected to the upper slide block; however, this is not required.
  • a lubricant can be position under the upper plate; however, this is not required.
  • Screws 1132 or other types of connectors are used to connect together the upper plate to the upper slide block.
  • a lower plate 1150 can be connected to the lower slide block; however, this is not required.
  • Slide pins 1160, arm guides 1170 and the like can be optionally used to facilitate in the guiding and/or movement of the reciprocating arms in the guide block.
  • a guide bracket 1200 can optionally be connected by screws 1134 ad nuts 1136 or by some other connector about the crank arms.
  • FIGURE 15 illustrates a non-limiting arrangement of the reciprocating arms in the guide block.
  • the cross-section of the opening through the guide block has a square or rectangular shape.
  • the two reciprocating arm are illustrated as having a connection groove arrangement to facilitate in the two reciprocating arms being connected together and to also allow the two reciprocating arms to reciprocate relative to one another.
  • Reciprocating arm 1000 includes a groove 1002 and leg 1004.
  • reciprocating arm 1010 includes a groove 1012 and leg 1014.
  • FIGURES 16-18 an alternative configuration for the reciprocating arms 1000, 1010 and guide block 1100 is illustrated.
  • the cross-section of the opening through the guide block has a non-square or non-rectangular shape.
  • the cross-sectional shape illustrated in FIGURE 18 is trapezoidal-shaped; however, other shapes can be used.
  • the two reciprocating arm are illustrated as having sloped outer surfaces 1001, 1011 so as to match or closely match the sloped wall profile of the opening through the guide block.
  • the guide block includes two separate opening 1180, 1182.
  • the openings having a circular cross-sectional shape; however, other cross-sectional shapes can be used (e.g., square, oval, rectangular, polygonal, etc.).
  • the guide block can be formed of a single piece of material; however, this is not required.
  • the front end of the guide block can include a guide lip 1190 used to guide and/or support the reciprocating arms as the reciprocating arms move into and out of openings 1180, 1182; however, this is not required.
  • the two reciprocating arm are illustrated as having a circular cross-sectional shape so as to match or closely match the cross-sectional shape of openings 1180, 1180 in the guide blade 1100.
  • the main cam bearing 920 is illustrated has being positioned in a bearing mount 924 that is designed to be secured to gear platform 810 by screws 926 and washers 928 or by some other type of connector.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sawing (AREA)

Abstract

L'invention porte sur une scie alternative et sur une ou plusieurs lames servant à couper une matière. La scie alternative comprend un système d'entraînement et une structure d'engrenage qui est conçue pour animer les première et seconde lames de scie d'un mouvement alternatif partiel ou complet dans les deux directions opposées. Les deux lames de scie alternatives peuvent comprendre une structure des dents qui facilite le maintien des lames l'une contre l'autre pendant le découpage d'une matière.
PCT/US2013/039632 2012-05-04 2013-05-06 Appareil alternatif double WO2014182273A1 (fr)

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PCT/US2013/039632 WO2014182273A1 (fr) 2013-05-06 2013-05-06 Appareil alternatif double
ZA2014/07646A ZA201407646B (en) 2012-05-04 2014-10-21 Biomarkers for iap inhibitor therapy

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JP2019022939A (ja) * 2018-11-12 2019-02-14 株式会社マキタ 充電式レシプロソー
US10511208B2 (en) 2015-04-01 2019-12-17 Makita Corporation Reciprocating tool
CN112547448A (zh) * 2020-12-22 2021-03-26 卢黎明 一种手持式管道刷漆装置
US11033973B2 (en) 2018-06-12 2021-06-15 Milwaukee Electric Tool Corporation Spindle for a reciprocating saw

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US4798001A (en) * 1986-11-11 1989-01-17 Black & Decker Inc. Saw blade for a saw having reciprocating blades
US5689887A (en) * 1995-06-28 1997-11-25 Robert Bosch Gmbh Hedge shear
WO2013033543A1 (fr) * 2011-08-31 2013-03-07 Infusion Brands International, Inc. Appareil alternatif double et lames de scie destinées à être utilisées avec cet appareil

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US4798001A (en) * 1986-11-11 1989-01-17 Black & Decker Inc. Saw blade for a saw having reciprocating blades
US5689887A (en) * 1995-06-28 1997-11-25 Robert Bosch Gmbh Hedge shear
WO2013033543A1 (fr) * 2011-08-31 2013-03-07 Infusion Brands International, Inc. Appareil alternatif double et lames de scie destinées à être utilisées avec cet appareil

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US11075567B2 (en) 2015-04-01 2021-07-27 Makita Corporation Reciprocating tool
US11581783B2 (en) 2015-04-01 2023-02-14 Makita Corporation Reciprocating tool
US11831224B2 (en) 2015-04-01 2023-11-28 Makita Corporation Reciprocating tool
US11033973B2 (en) 2018-06-12 2021-06-15 Milwaukee Electric Tool Corporation Spindle for a reciprocating saw
US11969811B2 (en) 2018-06-12 2024-04-30 Milwaukee Electric Tool Corporation Spindle for a reciprocating saw
JP2019022939A (ja) * 2018-11-12 2019-02-14 株式会社マキタ 充電式レシプロソー
CN112547448A (zh) * 2020-12-22 2021-03-26 卢黎明 一种手持式管道刷漆装置

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