US 11,092,011 B2
Pneumatic motor for pneumatic tools
Shih-Kwang Huang, Taichung (TW)
Assigned to KAI JIE PNEUMATIC INDUSTRY CO., LTD., Taichung (TW)
Filed by KAI JIE PNEUMATIC INDUSTRY CO., LTD., Taichung (TW)
Filed on Sep. 20, 2019, as Appl. No. 16/577,869.
Claims priority of application No. 107143218 (TW), filed on Dec. 3, 2018.
Prior Publication US 2020/0173283 A1, Jun. 4, 2020
Int. Cl. F01D 5/00 (2006.01); F01D 5/02 (2006.01); F01D 15/06 (2006.01); F01D 1/06 (2006.01); F01D 5/04 (2006.01); B25F 5/02 (2006.01); B24B 47/08 (2006.01)
CPC F01D 5/026 (2013.01) [B25F 5/02 (2013.01); F01D 1/06 (2013.01); F01D 5/021 (2013.01); F01D 5/043 (2013.01); F01D 15/06 (2013.01); B24B 47/08 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A pneumatic motor for pneumatic tools comprising a cylinder, said cylinder provided with an air chamber, said air chamber installed therein with a vane wheel, said vane wheel formed with a shaft hole for receiving a rotating shaft therein, said vane wheel having a circumferential side provided with a plurality of blades spaced apart, said cylinder having two sealing covers respectively covered at opposite openings of said air chamber, said sealing covers respectively provided with a pivot joint portion to be respectively and pivotally connected with two ends of said rotating shaft to enable said rotating shaft to rotate relative to said cylinder, and characterized by
said rotating shaft having one end bored with a tightening hole and said rotating shaft having one side radially bored with a withstanding hole communicating with said tightening hole at a location corresponding to said shaft hole of said vane wheel;
a withstanding member slidaby received in said withstanding hole, said withstanding member formed with a driven portion at one side facing said tightening hole, said withstanding member provided with a withstanding portion at one side facing said vane wheel; and
a tightening member inserted in said tightening hole, said tightening member provided with an operating portion at one end facing outside of said tightening hole, said tightening member formed with a driving portion at another end, a user able to operate said operating portion to actuate said tightening member to move toward said withstanding member, said driven portion pushed by said driving portion to have said withstanding member moved toward said vane wheel and pushed out of said withstanding hole, letting said withstanding portion withstand an inner wall of said shaft hole.