초록 ▼

Apparatus applicable to the piston rod of a control cylinder inherently operable to selectively limit and control the extent of its retraction. A preferred illustrative embodiment, as applied in use, conforms to a generally L-shaped structure the long leg of which is slim, substantially uniform in w

Apparatus applicable to the piston rod of a control cylinder inherently operable to selectively limit and control the extent of its retraction. A preferred illustrative embodiment, as applied in use, conforms to a generally L-shaped structure the long leg of which is slim, substantially uniform in width, at least in part transversely arcuate along the length of its inner operative surface, highly resistant to compression and has its base end pivotally connected to the short leg of said structure. Springs interposed between these legs in the pivotal interconnection thereof are established in a secure and stable relation thereto in a manner to positively apply in continuing bias on the long leg which induces it to incline to and over the length of the short leg to inherently form therewith an acute angle. These legs are so formed to lend the minimal amount of material of which they are comprised a very high degree of load bearing strength for their size. In the illustrative embodiment the short leg is so formed to have one end portion thereof mount in a substantially complete circumferentially encompassing relation to a portion of the length of the piston rod to which it applies to have the remainder of its length project rigidly therefrom and radially thereof, subsequent to which the long leg is pivotally connected in a biased relation thereto to complete the generally L-shaped structure of which they form a part.

대표청구항 ▼

Apparatus for application to the piston rod of a control cylinder to selectively limit and prevent the retraction of its piston rod into its housing comprising two distinct elements, one said element being bar-shaped, longitudinally extended and having, with reference to its application, inner and o

Apparatus for application to the piston rod of a control cylinder to selectively limit and prevent the retraction of its piston rod into its housing comprising two distinct elements, one said element being bar-shaped, longitudinally extended and having, with reference to its application, inner and outer surfaces, inner and outer ends, a block shaped base portion to its inner end and a major portion of the length of its inner surface to the outer end thereof transversely concave and substantially uniformly arcuate in cross section, the other of said elements having a substantial thickness, being short in length, having therein adjacent one end thereof a through aperture shaped to accommodate a portion of the piston rod to which it applies and at the opposite end thereof a recess accommodating therein said base portion of said one element, means releasably interconnecting and pivotally interrelating said base portion of said one element with and in nesting relation to said recess in said opposite end of said short element and spring means interposed between said base end portion of said one element and the said opposite end portion of said short element to firmly and resiliently bias said longitudinally extended bar-shaped element to normally position over and in inclined relation to said short element to inherently and firmly bias at least a portion of said transversely concave and substantially uniformly arcuate surface portion of said one element into a portion of the circumferential extent of the piston rod of the cylinder to which said short element applies when at least a predetermined portion of the length of such piston rod is extended from the cylinder of which it forms a part.