Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Adjustable double-ended box wrench










Image Number 3 for United States Patent #4787275.

An adjustable double-ended box wrench (10,10') is disclosed as including a wrench body (12) defining large and small box wrenches (20,22), an adjustable jaw assembly (14,14') including an elongated adjusting member (54,54') and a rotatable adjuster (56) that moves jaw end surfaces (70,72) to adjust the sizes of the wrenches, and a cover plate (16) that is secured to the wrench body (12) to retain the adjustable jaw assembly (14,14'). Each of the large and small box wrenches (20,22) includes a pair of associated diverging portions (34,44) and a pair of converging portions (36,46) as well as an associated connecting portion (42,52) that connect the associated engagement portions. Each of the connecting portions (42,52) preferably has a connecting wall (76,78) with curved ends that are tangent to associated engagement surfaces (38,48) in order to prevent stress concentration during use. In one embodiment of the wrench (10), the rotatable adjuster (56) is comprised by an adjusting nut ( 97) that receives an externally threaded portion (62) of the associated adjusting member (54) to provide the adjustment. In another embodiment of the wrench (10'), the rotatable adjuster (56) is comprised by an adjusting screw (110) that receives an internally threaded portion (106) of the associated adjusting member (54') to provide the adjustment. In each embodiment, the spacing between jaw ends (70 and 72) provides ease in switching from one wrench end to the other.








 
 
  Recently Added Patents
Imaging apparatus, control method thereof, and program
Reception system including a mechanism countering pulsed interference
Mechanism for visible users and groups
Identifying a characteristic of an individual utilizing facial recognition and providing a display for the individual
Battery-operated massager and soap dispensing wand
Scalable pixel coverage function-map
Lubricant composition and antioxident composition
  Randomly Featured Patents
Current mode logic scheme and circuit for matchline sense amplifier design using constant current bias cascode current mirrors
Chemically cleaning drilling/completion/packer brines
Method for increasing the ultra-violet light transmittance of ethylene glycol
Sprinkler head
Composition and method for controlling plant diseases
Inflatable solar concentrator balloon method and apparatus
Method for generating soft decision signal from hard decision signal in a receiver system
Extreme ultra violet light source apparatus
Predistortion linearizer using even order intermodulation components
Method of compensating for inoperative elements in an ultrasound transducer