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Class Information
Number: 81/60
Name: Tools > Wrench, screwdriver, or driver therefor > Handle clutched to head > One-way detent drive, e.g., ratchet
Description: Wrench or screwdriver wherein the clutching elements include a catch, dog, pawl or similar detent means, so arranged that movement of the handle in one direction will drive the head while movement in the opposite direction permits relative rotation of the head and handle.










Sub-classes under this class:

Class Number Class Name Patents
81/61 Pivoted pawl 101
81/63.1 Reversing 285


Patents under this class:
1 2 3 4 5 6 7 8 9

Patent Number Title Of Patent Date Issued
8701524 Complex wrench Apr. 22, 2014
8695459 Locking flex-head ratchet wrench Apr. 15, 2014
8683893 Ratchet wrench Apr. 1, 2014
8671808 Wrench with universal driving part Mar. 18, 2014
8661946 Ratchet wrench Mar. 4, 2014
8650991 Ratchet wrench Feb. 18, 2014
8646363 Ratchet with coated layer and the method for making the same Feb. 11, 2014
8621963 Dual purpose flip-out and T handle Jan. 7, 2014
8613239 Convertible driving tool Dec. 24, 2013
8596169 Ratchet wrench Dec. 3, 2013
8596170 Single direction mechanism of a ratchet wrench Dec. 3, 2013
8584555 Open-end ratchet wrench Nov. 19, 2013
8567287 Reversible open-ended ratchet wrench Oct. 29, 2013
8555750 Auto-Adjustable bearing wrench Oct. 15, 2013
8555752 Ratchet wrench Oct. 15, 2013
8555751 Adjustable ratchet wrench Oct. 15, 2013
8539864 Dual-handled drive wrench Sep. 24, 2013
8522651 Ratcheting driver mechanism Sep. 3, 2013
8522652 Spring for a ratchet wrench Sep. 3, 2013
8516928 Ratchet wrench preventing jam of pawls Aug. 27, 2013
8516926 Ratchet wrench Aug. 27, 2013
8511206 Ratchet wrench with rotatable driving head Aug. 20, 2013
8485069 Wrench with a ratchet device Jul. 16, 2013
8474350 Locking flex-head ratchet wrench Jul. 2, 2013
8468914 Variable gear ratio ratchet Jun. 25, 2013
8464616 Tools with driving rods Jun. 18, 2013
8434390 Flexible threading system May. 7, 2013
8424421 Jog-shuttle type ratchet wrench Apr. 23, 2013
8413549 Revolving screwdriver with ratchet structure Apr. 9, 2013
8413550 Dustproof device for ratchet wrench Apr. 9, 2013
8413553 Pivot head wrench Apr. 9, 2013
8397605 Ratchet wrench Mar. 19, 2013
8375830 Ratchet wrench Feb. 19, 2013
8371190 Fingertip tool holder Feb. 12, 2013
8347762 Glad hand wrench Jan. 8, 2013
8347759 Well coated wrench Jan. 8, 2013
8342059 Dustproof seal for ratchet wrench Jan. 1, 2013
8336428 Universal ratcheting tool Dec. 25, 2012
8291792 Rachet wrench Oct. 23, 2012
8272297 Easy to assemble ratchet wrench Sep. 25, 2012
8266987 Ratchet tool suitable for cooperating with thread forming taps Sep. 18, 2012
8261636 Quick-turn wrench Sep. 11, 2012
8261635 One-direction rachet wrench Sep. 11, 2012
8245602 Ratchet wrench Aug. 21, 2012
8231644 Torque wrench and ultrasonic surgical device Jul. 31, 2012
8230766 Wrench for different-sized nuts Jul. 31, 2012
8210072 Roller bearing ratchet tool Jul. 3, 2012
8205529 Hybrid low profile and standard ratchet system Jun. 26, 2012
8186247 Wrench May. 29, 2012
8166849 Combination ratcheting wrench with a box-end wrench having an opening May. 1, 2012

1 2 3 4 5 6 7 8 9










 
 
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