Device with pistons for locking in position linear elements...

Joints and connections – Manually releaseable latch type – Having operating mechanism

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C188S067000, C188S008000, C403S366000, C403S031000

Reexamination Certificate

active

06474899

ABSTRACT:

The present invention relates to a device for locking in position linear elements movable translationwise such as rods of cylinders and the like.
It is known that in the technical sector relating to the movement or manipulation of mechanical parts there exists the need to cause the displacement of said parts from one position to another by means of so-called linear movement units generally consisting of a slide which is movable, on fixed guide rods, by means of the thrusting/recall action of an actuator such as the rod of a cylinder or the shaft of a motor.
It is also known that, once the predefined position has been reached, said movement units must be locked in position by means of auxiliary devices which are associated with the actuating and/or guide means and must be able to withstand the stresses imparted to the part and hence to the actuator during the processing operations.
Said auxiliary locking devices are basically designed to produce a high frictional force which may be exerted on the rod of the actuator or on the guide rods of the slide, without causing at the same time undesirable displacements of the slide resulting from the sudden application of the locking force.
An example of the device known in the art is illustrated in EP 0,452,702.
Although fulfilling its intended functions, said device has limitations in that the constructional form described does not allow sufficiently high locking forces to be obtained on account of the fact that, if the value of the locking force were to be increased (something which would theoretically be possible), it would then be necessary to apply an unlocking force exerted by means of a jet of pressurised air which cannot be achieved using the normal devices available in work centres.
In addition to this, the known device has a structure which does not allow its dimensions to be kept within the volume of the body for connection of the actuating member.
The technical problem which is posed, therefore, is that of providing a device for locking linear actuating members such as cylinders and the like, which allows the overall dimensions to be kept within the said volume of the body for connection of the actuating member, but which, at the same time, allows positional locking forces to be exerted which are much higher than those currently possible with the known art, assuming the same force to be applied for unlocking.
Within the scope of this problem a further requirement is that said device should be easy and inexpensive to manufacture and assemble and should be easily applicable to actuating members of the known type.
These technical problems are solved according to the present invention by a device for locking in position linear elements movable translationwise, such as rods of cylinders and the like, which comprises an external body provided internally with a chamber housing elements for locking the rod, between which resilient means acting on the locking elements themselves are arranged, said chamber having formed inside it two opposing cylinders which are arranged on opposite sides of the rod and the pistons of which are designed to be arranged in a position for engagement with said locking elements so as to cause the movement towards one other and the consequent unlocking of the rod or, alternatively, in a position for disengagement from said locking elements so as to cause the movement away from each other and the consequent positioning of the latter in a position for locking of the rod.


REFERENCES:
patent: 3176590 (1965-04-01), Uhtenwoldt et al.
patent: 3643765 (1972-02-01), Hanchen
patent: 4214795 (1980-07-01), Kakuminato
patent: 4564088 (1986-01-01), Takahashi et al.
patent: 5115889 (1992-05-01), Fortmann et al.
patent: 5184700 (1993-02-01), Mainardi
patent: 5823300 (1998-10-01), Higuchi
patent: 6044934 (2000-04-01), Nemeth
patent: 2719822 (1979-02-01), None
patent: 60-249546 (1985-12-01), None
Abstract of JP 60 249546.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Device with pistons for locking in position linear elements... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Device with pistons for locking in position linear elements..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device with pistons for locking in position linear elements... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2973104

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.