Power expander

Abstract

A power expander being adapted of counting times of breast expanding, it comprises a first and a second handle, a slide seat, a plurality of elastic members and a counter, wherein the slide seat is connected to the first handle to be movable relatively within a limited range; one end of each of the elastic members is connected to a second handle, the other end is connected to the slide seat; the counting member is connected to the slide seat to contact an actuating member of the first handle. Thereby, when a user exerts force on the first and the second handle to stretch the elastic members, elastic members move the slide seat; the slide seat is moved relatively to the first handle, the actuating member contacts to press the counting member to do a counting action.

1 . A power expander being adapted of counting times of breast expanding comprising:
 a slide seat connected to a first handle to be movable relatively within a limited range, said first handle having an actuating member;   a plurality of elastic members, one end of each of them being connected to a second handle, other end of each of them being connected to said slide seat; and   a counting member connected to said slide seat to contact said actuating member; thereby when a user exerting forces on said two handles to stretch said elastic members, said actuating member of said first handle moving relatively to said slide seat to press said counting member to do time counting.   
     
     
         2 . The power expander being adapted of counting times of breast expanding as claimed in  claim 1 , wherein said counting member includes a counter, an engaging member and an upper lid; said counter is connected to a top of said slide seat, and is provided with a push button; said engaging member is pivotally connected to said upper lid, one end of said engaging member contacts said actuating member, other end of said engaging member is kept a predetermined distance from said push button, in order when said elastic members and said slide seat are pulled, said actuating member abuts against said engaging member, thus said engaging member rotates to press said push button to do counting. 
     
     
         3 . The power expander being adapted of counting times of breast expanding as claimed in  claim 1 , wherein one end of said slide seat is provided with a plurality of positioning grooves for respectively positioning said elastic members; one end of each of said elastic members is abutted against an inner side on an end of said first handle. 
     
     
         4 . The power expander being adapted of counting times of breast expanding as claimed in  claim 3 , wherein said elastic members are springs. 
     
     
         5 . The power expander being adapted of counting times of breast expanding as claimed in  claim 1 , wherein two lateral sides of said slide seat are provided each with a first rail which has a limiting portion, while two lateral sides of said first handle are provided each with a second rail which has a guiding portion; said first and said second rails on each of said lateral sides cooperate with each other, and said guiding portions and said limiting portions on each of said lateral sides cooperate with each other too, so that said slide seat slides relatively to said first handle. 
     
     
         6 . The power expander being adapted of counting times of breast expanding as claimed in  claim 3 , wherein two lateral sides of said slide seat are provided each with a first rail which has a limiting portion, while two lateral sides of said first handle are provided each with a second rail which has a guiding portion; said first and said second rails on each of said lateral sides cooperate with each other, and said guiding portions and said limiting portions on each of said lateral sides cooperate with each other too, so that said slide seat slides relatively to said first handle. 
     
     
         7 . The power expander being adapted of counting times of breast expanding as claimed in  claim 5 , wherein said limiting portions are slide grooves, said guiding portions are protruding blocks adapted to sliding in said slide grooves. 
     
     
         8 . The power expander being adapted of counting times of breast expanding as claimed in  claim 1 , wherein said power expander has a cover covering a rear end of said slide seat. 
     
     
         9 . The power expander being adapted of counting times of breast expanding as claimed in  claim 1 , wherein said slide seat is provided with a through hole in order that said actuating member of said first handle contacts to press said counting member after extending through of said actuating member.