Coupling for lift system for concrete slabs

Details Coupling for lift system for concrete slabs Coupling for lift system for concrete slabs

1978-07-20

1980-05-27

Marbert, James B.

Handling: hand and hoist-line implements

Grapple

Lewises

52707, B66C 100

Patent

active

042047110

ABSTRACT:
A flared tube sitting on a base is embedded in a concrete slab, and a casement on a shackle can be inserted into the tube to make up the coupling. The casement holds a plunger which can be locked into a position in which its head urges balls out of the casement for engagement with the flare tube. The plunger lock includes a fork locking the casement to the plunger at the other end. The plunger head has a conical tip so that upon retraction the balls can be retracted to release the coupling or to insert the casement to make up the coupling. The flared tube is clamped down onto the base which in turn is constructed for fastening to re-bar structure in the concrete.

REFERENCES:
patent: 3680906 (1972-08-01), Neumeier
patent: 4017115 (1977-04-01), Holf et al.
patent: 4018470 (1977-04-01), Tye
patent: 4123882 (1978-11-01), Cage et al.

Affiliated with

Also associated with

Rating

Coupling for lift system for concrete slabs does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Coupling for lift system for concrete slabs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coupling for lift system for concrete slabs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1116476