Safety hoist ring

• US 5,848,815 A
• Filed: 03/24/1997
• Issued: 12/15/1998
• Est. Priority Date: 03/24/1997
• Status: Expired due to Term

• Current Assignee: MJT Holdings LLC
• Original Assignee: CBC Industries Incorporated
• Inventors: Alba, Tony J., Tsui, Gary
• Primary Examiner(s): KRAMER, DEAN J
• Application Number:
  US08/822,050
• Time in Patent Office: 631 Days
• Field of Search: 294/1.1, 294/82.1, 294/89, 403/78, 403/79, 403/164, 410/101, 410/112-114
• US Class Current: 294/215
• CPC Class Codes: B66C 1/66 for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
• CPC Class Codes: Y10T 403/32213 Articulate joint is a swivel
• CPC Class Codes: Y10T 403/32975 Rotatable

Abstract

For lifting loads there is provided an eyebolt with an annular ring swivelly mounted on a stud so as to freely rotate in a horizontal plane through a full 360 degrees. A lifting loop has oppositely disposed pivot pins in swivel engagement with the annular ring to allow the loop to pivot in a vertical arc as well as to rotate about the stud. The stud in turn is adapted to be anchored in fixed position to the load, whatever the load may be. Circumferential grooves are cut in the solid pivot pins adjacent the ends thereof. The pivot pins are received in a diametric bore in the retention ring. Bores in the body of the retention ring are positioned to align with the circumferential grooves. Solid dowel elements inserted in these bores engage with the circumferential grooves and retain the pivot pins assembled with the retention ring.

Claims

1. A safety hoist ring for attachment to a load, said safety hoist ring comprising a load engaging structure, a retention ring having a captive swivel engagement with said load engaging structure and adapted to rotate throughout substantially a full circle, a lifting loop, and a transversely disposed pivot structure, said transversely disposed pivot structure including opposed solid pivot pin elements respectively pivotally joined to said lifting loop in a fixed spaced axial relationship with respect to each other, each said solid pivot pin element having a captive end at a pivotal junction with the lifting loop and a free end, said retention ring comprising a ring member having axially opposed faces, and a diametric bore extending laterally therethrough, said solid pivot pin elements being received in and substantially filing said diametric bore, each of said solid pivot pin elements including a groove extending circumferentially adjacent the free end thereof, said retention ring including a detent receiving bore intersecting with each of said respective grooves, a solid detent member received in each of said detent receiving bores and engaged with said respective grooves, said detent receiving bores being disposed on opposite sides of said diametric bore.

2. A safety hoist ring as in claim 1 wherein there is substantially no void space in the retention ring in the assembled configuration.

3. A safety hoist ring for attachment to a load, said safety hoist ring comprising a load engaging structure, a retention ring having a captive swivel engagement with said load engaging structure and adapted to rotate throughout substantially a full circle, a lifting loop, and a transversely disposed pivot structure, said transversely disposed pivot structure including opposed solid pivot pin elements respectively pivotally joined to said lifting loop in a fixed spaced axial relationship with respect to each other, said lifting loop being mounted for pivotal movement through a vertical arc about the diameter of said circle, each said solid pivot pin element having a captive end at a pivotal junction with the lifting loop and a free end, said retention ring comprising a ring member having axially opposed faces, and a diametric bore extending laterally therethrough, said solid pivot pin elements being received in and substantially filing said diametric bore, each of said solid pivot pin elements including a groove extending circumferentially adjacent the free end thereof, said retention ring including a detent receiving bore intersecting with each of said respective grooves, a detent member received in each of said detent receiving bores and engaged with said respective grooves, said detent receiving bores being disposed on opposite sides of said diametric bore.