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Oil-less pneumatic motor

An air motor, air drill technology for use in machines/engines, rotary piston engines, rotary or oscillating piston engines, etc., to solve problems such as cost and complexity

Pending Publication Date: 2020-08-21
MEDTRONIC PS MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Metering of lubricants often incurs cost and complexity related to drill life and condition and facilitates drill system management

Method used

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  • Oil-less pneumatic motor
  • Oil-less pneumatic motor
  • Oil-less pneumatic motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Example embodiments will now be described more fully with reference to the accompanying drawings. refer to Figures 1 to 7D , shows a pneumatic drill 10 according to the present teachings. figure 1 A pneumatic drill 10 is disclosed having an air motor 12 , a tool engaging chuck 14 , and a member or hose 16 carrying a high pressure air supply 18 and an air exhaust 20 . As is well known, the tool engaging chuck 14 is configured to be coupled to a rotating tool such as a drill bit or a cutting file.

[0020] figure 2 , Figure 3A and Figure 3B A cross-sectional view of the air motor 12 is shown. The air motor 12 has a housing 22 defining a high pressure air input 18 and an air output or exhaust 20, and defines an inner cylindrical chamber 23 having a bearing surface 24 defining a The through hole 25 of the longitudinal axis 27 . The motor 12 has a driven shaft 26 that is coupled to the tool engaging chuck 14 . A driven shaft 26 defining a plurality of longitudina...

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PUM

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Abstract

The pneumatic drill has member defining an air input and an air output and a housing defining an internal cylindrical chamber having bearing surfaces having a through axis. A driven shaft is coupled to the tool engaging chuck that defines a plurality of longitudinal slots. The driven shaft is disposed within the chamber and has a longitudinal axis offset from the through axis. A plurality of vaneseach being partially formed of graphite that are individually disposed within one of the plurality's of longitudinal slots. Two of the vanes, the housing, and the driven shaft define a moving compression chamber.

Description

technical field [0001] The present disclosure relates to a pneumatic drill, and more particularly to an oil-free pneumatic motor for a drill having graphite blade members. Background technique [0002] This section provides background information related to the present disclosure which is not necessarily prior art. [0003] In today's surgical environment, high speed pneumatic drills are often utilized to cut tissue such as bone. These high speed drills - small but effective - utilize cutting implements that rotate at tens of thousands of RPM. To reduce the amount of friction-induced heat and wear in these systems and to reduce drill size, drills often utilize liquid lubricants that are often fed into the feed gas stream. Metering of lubricants often incurs costs and complexities related to drill life and service conditions and ease of drill system management. It is therefore an object of the present invention to overcome these complexities. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): A61B17/16
CPCA61B17/1628A61B2017/00544A61B2017/00845A61B17/1624B23B45/044F01C1/3441A61B2017/00398A61B2017/1653F01C13/02B23B2270/027
Inventor M·Z·胡克
Owner MEDTRONIC PS MEDICAL