IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0657902
(2007-01-25)
|
등록번호 |
US-7503473
(2009-03-17)
|
발명자
/ 주소 |
- Niblett,James R.
- Braddock,C. Kerwin
- Steinbrunner,Glen V.
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
21 |
초록
▼
A pneumatic fastener includes a housing and a handle coupled to the housing. The handle defines an inlet channel for delivering compressed gas to the housing. A trigger valve is in communication with the inlet channel and configured to actuate the pneumatic fastener. A fastener driving assembly is d
A pneumatic fastener includes a housing and a handle coupled to the housing. The handle defines an inlet channel for delivering compressed gas to the housing. A trigger valve is in communication with the inlet channel and configured to actuate the pneumatic fastener. A fastener driving assembly is disposed within the housing. The fastener driving assembly includes a cylinder and a piston that reciprocates within the cylinder to drive a fastener. A valve piston is coupled to the fastener driving assembly. Actuation of the valve piston causes compressed air to drive the piston within the cylinder to drive the fastener. An outer cap is coupled to the housing and an inner cap is disposed at least partially within the outer cap. The inner cap includes an opening in communication with the trigger valve for porting the compressed air to a region above the valve piston.
대표청구항
▼
What is claimed is: 1. A pneumatic fastener, comprising: a housing; a handle coupled to the housing, the handle defining an inlet channel for delivering compressed gas to the housing; a trigger valve in communication with the inlet channel and configured to actuate the pneumatic fastener; a fastene
What is claimed is: 1. A pneumatic fastener, comprising: a housing; a handle coupled to the housing, the handle defining an inlet channel for delivering compressed gas to the housing; a trigger valve in communication with the inlet channel and configured to actuate the pneumatic fastener; a fastener driving assembly disposed within the housing, the fastener driving assembly including a cylinder and a piston that reciprocates within the cylinder to drive a fastener; a valve piston coupled to the fastener driving assembly, wherein actuation of the valve piston causes compressed air to drive the piston within the cylinder to drive the fastener; an outer cap coupled to the housing; and an inner cap disposed at least partially within the outer cap, the inner cap including an opening in communication with the trigger valve for porting the compressed air to a region above the valve piston, wherein the opening also ports the compressed air from the region above the valve piston to the trigger valve upon actuation of the trigger valve. 2. The pneumatic fastener of claim 1, wherein the inner cap comprises a sidewall. 3. The pneumatic fastener of claim 2, wherein the opening comprises a plurality of openings in the sidewall. 4. The pneumatic fastener of claim 2, wherein the sidewall comprises a generally cylindrical sidewall. 5. The pneumatic fastener of claim 1, wherein the inner cap is seated in the outer cap with a space between the inner cap and the outer cap. the space being in communication with the inlet channel. 6. The pneumatic fastener of claim 5, wherein the opening is in communication with the space. 7. The pneumatic fastener of claim 6, wherein the space is also in communication with the trigger valve. 8. The pneumatic fastener of claim 1, wherein the inner cap further comprises a central opening configured to transmit exhaust air from the cylinder to an exhaust channel. 9. The pneumatic fastener of claim 8, wherein the exhaust channel is at least partially disposed in the handle. 10. The pneumatic fastener of claim 8, wherein at least a portion of the inlet channel and at least a portion of the exhaust channel are defined in the outer cap. 11. The pneumatic fastener of claim 1, wherein the inner cap and the valve piston are composed of materials that are configured to reduce lubrication needed for movement of the valve piston. 12. The pneumatic fastener of claim 1, wherein the inner cap and the valve piston are composed of materials that are configured to have approximately the same degree of thermal expansion. 13. The pneumatic fastener of claim 1, wherein at least one of the inner cap and the valve piston comprises a lubricious plastic. 14. The pneumatic fastener of claim 1, wherein the valve piston abuts an end portion of the cylinder. 15. The pneumatic fastener of claim 14, wherein when the trigger valve is actuated, the valve piston separates from the cylinder to allow compressed air to enter the cylinder to cause the piston to reciprocate in the cylinder. 16. The pneumatic fastener of claim 1, wherein the cylinder remains stationary when the trigger valve is actuated. 17. A pneumatic fastener comprising: a housing; a nosepiece coupled to the housing; a magazine coupled to one of the nosepiece and the housing and configured to store a plurality of fasteners; a driver disposed in the nosepiece for driving a fastener that has been dispensed from the magazine into a workpiece; a trigger coupled to the housing and configured to actuate the driver to drive the fastener; a fastener driving assembly disposed within the housing, the fastener driving assembly including a cylinder and a piston that reciprocates within the cylinder in response to application of compressed gas to drive the driver; a valve piston coupled to the fastener driving assembly, wherein actuation of the valve piston causes the compressed gas to drive the piston within the cylinder to drive the fastener; a handle having a first end portion coupled to the housing and a second end portion coupled to the magazine, the second end portion including an inlet connection for coupling the pneumatic fastener to a source of the compressed gas; an inlet channel extending through the handle from the inlet connection to the housing to deliver the compressed gas from the inlet connection to the housing; a trigger valve in communication with the inlet channel and configured to actuate the pneumatic fastener; an outer cap coupled to the housing; and an inner cap disposed between the outer cap and the valve piston, the inner cap including a generally cylindrical sidewall that defines an axial opening configured to transmit exhaust air from the cylinder to an exhaust channel, and that defines at least one radial opening configured to port compressed gas from the trigger valve to a region above the valve piston before actuation of the trigger and to port compressed gas from the region above the valve piston to the trigger valve upon actuation of the trigger. 18. The pneumatic fastener of claim 17, wherein the inner cap and the valve piston are composed of materials that are configured to reduce lubrication needed for movement of the valve piston. 19. A pneumatic fastener, comprising: a housing; a handle coupled to the housing, the handle defining an inlet channel for delivering compressed air to the housing; a cylinder disposed within the housing; a piston that reciprocates within the cylinder to drive a fastener; a trigger valve that is in communication with the inlet channel and that is configured to actuate the pneumatic fastener; a valve piston moveable between a first position in which the valve piston abuts an end portion of the cylinder and a second position in which the valve piston is separated from the cylinder; an outer cap coupled to the housing; and an inner cap disposed at least partially within the outer cap and having a generally cylindrical sidewall configured to receive at least a portion of the valve piston, the sidewall defining at least one radial opening in communication with the trigger valve for porting the compressed air to a region above the valve piston, wherein, when the trigger valve is actuated, the compressed air above the valve piston is exhausted to atmosphere, causing the valve piston to separate from the cylinder, which enables compressed air to enter the cylinder and cause the piston to reciprocate in the cylinder. 20. The pneumatic fastener of claim 19, wherein the inner cap is seated in the outer cap with a space between the inner cap and the outer cap, the space being in communication with the inlet channel. 21. The pneumatic fastener of claim 19, wherein the inner cap further comprises a central opening configured to transmit exhaust air from the cylinder to an exhaust channel. 22. The pneumatic fastener of claim 21, wherein the exhaust channel is at least partially disposed in the handle. 23. The pneumatic fastener of claim 21, wherein at least a portion of the inlet channel and at least a portion of the exhaust channel are defined in the outer cap. 24. The pneumatic fastener of claim 19, wherein the inner cap and the valve piston are composed of materials that are configured to reduce lubrication needed for movement of the valve piston.
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