Pump jack with release mechanism

Details Pump jack with release mechanism Pump jack with release mechanism

B - Operations, Transporting

66

F

B66F 1/00 (2006.01) A63B 27/00 (2006.01) E04G 3/00 (2006.01)

Patent

CA 2119544

An improved pump jack of the type comprising a metal frame that has two parallel spaced frame members carrying upper and lower shackle assemblies arranged to grip a supporting pole, and a pump arm coupled to the frame and the upper shackle assembly for raising the jack. An improved releasing mechanism is provided comprising a U-shaped release member disposed between the two frame members. The U-shaped release member has two opposed struts each provided with an elongate hole adjacent one end to slidably and rotatably receive a pivot shaft that is anchored in the two frame members. The elongate holes in the opposite ends of the release member's side struts are aligned with holes in the forward ends of the side arms of the shackle member of the lower shackle assembly. The holes in the side arm of the lower shackle member are sized and shaped to non-rotatably accommodate the front clamping bar, with the latter acting to pivotally interconnect the U-shaped release member's side struts and the lower shackle. Associated with the release mechanism is a safety means that is designed to prevent accidental operation of the release mechanism.

Cette invention concerne un cric à levier amélioré du type comprenant un cadre métallique formé d'une paire de membrures parallèles espacées et portant des manilles supérieure et inférieure servant à agripper un poteau support, et un levier couplé au cadre et à la manille supérieure pour faire monter le cric. L'objet de l'invention comporte un mécanisme de dégagement amélioré prenant la forme d'un élément en U disposé entre les deux membrures latérales. Ce profilé comprend deux branches opposées qui ont chacune un trou allongé à un bout destiné à recevoir, en ajustement coulissant et tournant, un arbre pivot solidaire des deux membrures latérales. Les trous allongés ménagés dans les deux branches de l'élément en U sont alignés avec des trous à l'extrémité avant des branches latérales de la manille inférieure. Les trous ménagés à l'extrémité avant des branches de la manille inférieure ont une forme et un diamètre conçus pour un montage non rotatif de la traverse d'assemblage qui sert en même temps à relier les branches de l'éléments en U à celles de la manille. Le mécanisme de dégagement comporte une sécurité conçue pour empêcher son fonctionnement intempestif.

Affiliated with

Also associated with

Rating

Pump jack with release mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pump jack with release mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pump jack with release mechanism will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1949999