|Publication number||USRE41320 E1|
|Application number||US 11/084,871|
|Publication date||May 11, 2010|
|Filing date||Mar 18, 2005|
|Priority date||Apr 12, 2001|
|Also published as||US6595095, US20020148336|
|Publication number||084871, 11084871, US RE41320 E1, US RE41320E1, US-E1-RE41320, USRE41320 E1, USRE41320E1|
|Inventors||Cheng-Chou Lo, Yung-Chiang Ku|
|Original Assignee||Rexon Industrial Corp., Ltd.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (45), Referenced by (2), Classifications (16), Legal Events (2)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Co-pending application Ser. No. 11/522,505 is a continuation of the present application.
The present invention relates to a miter saw wherein the angle of the handle connected to the circular saw assembly is adjustable and the bench of the miter saw can be pivoted and positioned at desired angle.
A conventional miter saw is shown in FIG. 8 and generally includes a base 60 with a disk 65 connected thereon and scale marks are marked on the disk 65. A circular bench 62 is pivotally supported on the disk 65 and a handle 631 extends from the bench 62. A position device 63 is connected to the handle 631 and has a position member 632 which is engaged with one of notches 651 defined in an underside of the disk 65 so that the bench 62 can be pivoted and positioned at desired angle. A connection member 64 is connected to the bench 62 so that the circular saw assembly 70 is pivotally connected to the connection member 64. The circular saw assembly 70 has a blade 74 which is driven by a motor 71 and an arm 72 is connected to a shaft of the blade 74. A handle 73 is connected to the arm 72. A fence 61 is located on the bench 62 so that an object to be cut is guided on the fence 61. The bench 62 can only be positioned at certain angles where notches 651 are available and it is difficult to set the bench 62 at an angle where no notch 651 is available. The user has to hold the handle 631 firmly to maintain the position of the bench 62 and lower the blade 74 to check the object will be cut at desired position. Besides, the handle 73 is fixed so that it cannot be satisfied by different users.
The primary object of the present invention is to provide a miter saw which has a handle that is rotated and positioned at a desired angle so as to meet different users' needs.
Another object of the present invention is to provide a miter saw which has a position member connected to the angle position device, wherein the position member is pushed by operating a lever to contact against a periphery of the scale disk to position the scale disk.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.
A connection member 13 is connected to the bench 11 and a circular saw assembly 20 is pivotally connected to the connection member 13 by an arm 21 connected therebetween. The circular saw assembly 20 includes a motor 22 and a circular blade 23 which is driven by the motor 22. A block 50 is fixedly connected to the arm 21 and a first connection port 53 is located on an end of the block 50. A recessed area 532 is defined in a surface of the first connection ports 53. A first central hole 531 is defined through an inside of the recessed area 532 and a plurality of concavities 533 are defined in the inside of the recessed area 532.
A rectangular handle 40 composed of two halves 41, 42 has a second connection port 43 which has a protrusion 433 extending from a first surface thereof. The protrusion 433 is removably engaged with the recessed area 532 and a second central hole 431 is defined through the protrusion 433 and the second connection port 43. A plurality of rods 435 extend from the protrusion 433 and are engaged with the concavities 533. The number of the concavities 533 is more than the number of the rods 435. A groove 534 is defined in the surface of the connection port 53 and a position tube 434 extends from the first surface of the second connection port 43. The position tube 434 is movably received in the groove 534 so that the second connection port 43 is restricted to be rotated a limited angle relative to the first connection port 53 because the groove 534 limits the range of movement of the position tube 434.
An engaging recess 44 is defined in a second surface of the second connection port 43 and a seat member 45 is received in the engaging recess 44. A passage 451 is defined through the seat member 45 and communicates with the second central hole 431. A flange 452 extends from a periphery defining the passage 451. A pin 47 extends through the passage 451, the second central hole 431 and the first central hole 531. A clamp 474 is engaged with a groove 472 defined in a distal end of the pin 47 so as to prevent the pin 47 from dropping from the first central hole 531. A spring 46 is mounted to the pin 47 and biased between the flange 452 and a head 471 of the pin 47. A thread hole 473 is defined in the head 471 of the pin 47 and the head 471 of the pin 47 is sized to be movably received in the passage 451. A locking member 48 has a section 482 and an eccentric hole 480 is defined through the locking member 48 and the section 482. A bolt 481 extends through the eccentric hole 480 and is engaged with the thread hole 473. The locking member 48 is freely rotated about the bolt 481 and the section 482 is sized to be inserted in the passage 451. An eccentric convex surface 483 extends from a distal end of the section 482 and the eccentric convex surface 483 contacts the head 471 of the bolt 47.
When rotating a handlebar on the locking member 48 to a locking position, because the eccentric hole 480 is located eccentrically in the section 482 so that a central axis of the section 482 is shifted away from a central axis of the passage 451 and the pin 47. The highest point of the eccentric convex surface 483 firmly urges the head 471 of the pin 47 so that the handle 40 cannot be pulled away from the block 50 because the seat member 45 is stopped by the section 482. On the contrary, when rotating the locking member 48 to an unlock position, the central axis of the section 482 is shifted to coincide with the central axis of the passage 451 and the pin 47. The peak point of the eccentric convex surface 483 is then removed from the head 471 of the pin 47 so that the handle 40 can be pulled away from the block 50 and the head 471 of the pin 47 and the section 482 are both received in the passage 451 as the seat member 45 is moved with the handle 40. The handle 40 is then able to be rotated an angle to let the rods 435 remove from the concavities 533 wherein the rods 435 were engaged to other concavities 533. By this way, the angle of the handle 40 can be adjustable.
When the lever 151 is not lifted, and rubber end of the position rod 154 does not contact the scale disk 16 as shown in FIG. 6. As shown in
While we have shown and described the embodiments in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US135628 *||Feb 11, 1873||Improvement in handles for saws|
|US264017||Dec 19, 1881||Sep 5, 1882||Tool-clamp|
|US848459||Aug 20, 1906||Mar 26, 1907||Charles E Grant||Chipping-machine.|
|US1151078 *||Apr 6, 1915||Aug 24, 1915||George D Young||Handsaw.|
|US1531131||Nov 19, 1923||Mar 24, 1925||Price William G||Saw handle|
|US2575296 *||Sep 9, 1948||Nov 13, 1951||Stanley Rogers||Saw blade holder|
|US2630844||Jun 29, 1950||Mar 10, 1953||Homclite Corp||Chain saw|
|US4428266||Jan 18, 1982||Jan 31, 1984||Hempe Manufacturing Co.||Miter saw having a swivel handle|
|US4785540||Oct 29, 1987||Nov 22, 1988||Ab Electrolux||Device in power-driven hand tools|
|US4934233||Jun 29, 1988||Jun 19, 1990||Emerson Electric Co.||Compound miter saw|
|US5016510 *||Aug 18, 1989||May 21, 1991||Gardner Frederick P||Power saw arrangement|
|US5065476||Aug 23, 1990||Nov 19, 1991||Andreas Stihl||Handle arrangement for a handheld portable tool|
|US5129300 *||Jun 12, 1991||Jul 14, 1992||Ryobi Limited||Desk-top type cutter|
|US5154435 *||Dec 4, 1991||Oct 13, 1992||Sunshon Molding Co., Ltd.||Grip with an angle adjustable structure for a golf cart|
|US5168601 *||Jul 21, 1992||Dec 8, 1992||Liu Kun Hei||Adjustable baby cart handrail positioning device|
|US5201146||Dec 13, 1991||Apr 13, 1993||Makita Corporation||Portable rotary tool|
|US5297463||Oct 9, 1991||Mar 29, 1994||Black & Decker Inc.||Adjustable fence for compound miter saw|
|US5339572||Dec 14, 1991||Aug 23, 1994||Robert Bosch Gmbh||Hand tool|
|US5347902||Apr 7, 1993||Sep 20, 1994||Delta International Machinery Corp.||Motorized miter box|
|US5357834||May 18, 1993||Oct 25, 1994||Makita Corporation||Miter saw|
|US5555627||Sep 5, 1995||Sep 17, 1996||Hartzell; Mark||D-shaped handle for coping saws|
|US5564323||Mar 6, 1995||Oct 15, 1996||Makita Corporation||Circular saw unit|
|US5595124 *||Jun 8, 1994||Jan 21, 1997||Delta International Machinery Corp.||Restraining mechanism|
|US5678315||Jul 2, 1996||Oct 21, 1997||Hartzell; Mark D.||Saw handle having a grip member perpendicular to and symmetrical about a saw blade|
|US5681214||Nov 5, 1996||Oct 28, 1997||Robert Bosch Gmbh||Hand power tool|
|US5778747 *||Nov 21, 1996||Jul 14, 1998||Rexon Industrial Corp., Ltd.||Power saw having an ergonomically-designed handle and safety switch|
|US5937720 *||Jul 30, 1996||Aug 17, 1999||Milwaukee Electric Tool Corporation||Lower blade guard actuating mechanism for a slide compound miter saw|
|US5957021||Feb 13, 1998||Sep 28, 1999||Black & Decker, Inc.||Guard and control apparatuses for sliding compound miter saw|
|US5969312||Jun 24, 1998||Oct 19, 1999||S-B Power Tool Company||Ambidextrous powers-switch lock-out mechanism|
|US6108867||May 7, 1998||Aug 29, 2000||Kioritz Corporation||Handling device for power working machine|
|US6266850||Apr 16, 1999||Jul 31, 2001||Interdynamics, Inc.||Hand-held tool and adjustable handle for same|
|US6293859||Dec 15, 1999||Sep 25, 2001||C. & E. Fein Gmbh & Co.||Electric power tool with rotatable handle|
|US6314853 *||Apr 15, 1999||Nov 13, 2001||Omi Kogyo Co., Ltd.||Portable cutting apparatus|
|US6658976||Jan 29, 2001||Dec 9, 2003||One World Technologiess, Inc.||Ergonomic miter saw handle|
|USD346173||Jan 4, 1993||Apr 19, 1994||Black & Decker Inc.||Miter saw|
|USD352509||May 6, 1993||Nov 15, 1994||Porter-Cable Corporation||Miter saw|
|USD366491||Mar 13, 1995||Jan 23, 1996||P & F Brother Indutrial Corporation||Electric saw|
|USD388442||Dec 17, 1996||Dec 30, 1997||Makita Corporation||Miter saw|
|USD389494||Nov 4, 1996||Jan 20, 1998||Rexon Industrial Corp., Ltd.||Miter saw|
|USD390766||Apr 17, 1997||Feb 17, 1998||Black & Decker Inc.||Handle for a sliding compound miter saw|
|USD391973||Dec 2, 1996||Mar 10, 1998||Black & Decker Inc.||Sliding compound miter saw|
|USD400215||Sep 10, 1997||Oct 27, 1998||Black & Decker Inc.||Sliding compound miter saw|
|USD409066||Jun 3, 1998||May 4, 1999||Black & Decker Inc.||Chop saw|
|USD415001||Feb 1, 1999||Oct 12, 1999||Black & Decker Inc.||Chop saw|
|JPS60176701A||Title not available|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US20080264224 *||Apr 21, 2008||Oct 30, 2008||Rexon Industrial Corp., Ltd.||Circular saw mechanism|
|US20080295663 *||May 27, 2008||Dec 4, 2008||Rexon Industrial Corp., Ltd.||Cutting mechanism with adjustable position operating handle|
|U.S. Classification||83/473, 83/490, 83/581|
|International Classification||B23D45/04, B23D47/02, B23D47/00, B23D19/00|
|Cooperative Classification||Y10T83/7788, Y10T83/7705, B23D47/025, B23D47/00, Y10T83/8773, B23D45/044|
|European Classification||B23D47/00, B23D47/02B, B23D45/04A1|
|Jan 20, 2011||FPAY||Fee payment|
Year of fee payment: 8
|Jan 9, 2015||FPAY||Fee payment|
Year of fee payment: 12