Make and break head valve assembly

Details Make and break head valve assembly Make and break head valve assembly

1994-12-22

1995-12-19

Smith, Scott A.

Elongated-member-driving apparatus

With means to move or guide member into driving position

Including supply magazine for constantly urged members

91461, B25C 513, F15B 1108

Patent

active

054762057

ABSTRACT:
A pneumatically operated fastener driving device is provided including an inlet head valve structure mounted within a housing for movement between (1) a closed position sealing a piston chamber from communication with a main air pressure reservoir and (2) an open position enabling the main air pressure reservoir to communicate with the piston chamber, and an outlet head valve structure mounted within the housing for movement separate from the inlet head valve structure between (1) a closed position sealing the piston chamber from communication with an exhaust opening and (2) an open position enabling the piston chamber to communicate with the exhaust opening. The inlet and outlet head valve structures include first and second reservoir pressure responsive surfaces respectively. The inlet and outlet head valve structures include first and second pilot pressure responsive surfaces disposed in opposing relation to the reservoir pressure responsive surfaces respectively and in continuous communicating relation to the pressure within a pilot pressure chamber so as to bias the inlet head valve structure to move in an opposite direction toward its closed position and the outlet head valve structure to move in the same opposite direction toward its open position. A spring is provided to bias the inlet head valve structure so it (1) moves to its open position after movement of the outlet valve to its closed position in one direction and (2) moves to its closed position prior to movement of the outlet valve structure to its open position in an opposite direction.

REFERENCES:
patent: 3437013 (1969-04-01), Volkmann
patent: 4667572 (1987-05-01), Ellieson
patent: 4784308 (1988-11-01), Novak et al.
patent: 5085126 (1992-02-01), Mukoyama
patent: 5131579 (1992-07-01), Okkushima et al.
patent: 5259465 (1993-11-01), Mukoyama

Affiliated with

Also associated with

Rating

Make and break head valve assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Make and break head valve assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Make and break head valve assembly will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-987898