Patent ID: 8336347

Claim:
A lock assembly ( 10 ) comprising: (a) an anterior portion sub-assembly, ( 20 ) including: (i) a push button ( 48 ); and (ii) an exterior drive handle ( 44 ), wherein said exterior drive handle ( 44 ) is adapted for rotational motion around said push button; (b) an intermediate portion sub-assembly ( 30 ) including: (i) a cylindrically shaped casing ( 54 ); and (ii) a sprocket wheel ( 66 ) adapted for rotational motion with relation to said cylindrically shaped casing ( 54 ), wherein said intermediate portion sub-assembly ( 30 ) is operatively connected to said anterior portion sub-assembly ( 20 ); and (c) a posterior portion sub-assembly ( 40 ) including: (i) a housing ( 58 ); (ii) a printed circuit board ( 80 ) mounted inside said housing ( 58 ); and (iii) an electric motor ( 86 ) mounted inside said housing ( 58 ), wherein said posterior portion sub-assembly ( 40 ) is operatively connected to said intermediate portion sub-assembly ( 30 ).