Patent US3863975A successfully refreshed from Google Patents.
US3863975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for lifting heavy objects
Assignee: Individual
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Filing: 1973-01-23
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Granted: 1975-02-04
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Expires: 1993-01-23
Abstract
Abstract Apparatus for use in lifting heavy objects, such as concrete slabs, beams, columns, and the like, wherein a lift rod is inserted into a plastic sleeve, the lift rod being intersected by a lock rod, which is also disposed through a plastic sleeve, and which passes through an opening through the lift rod to lock the same in place within the object. The plastic sleeves are integral and are cast or molded within the object to be lifted. The sleeves may be made of materials other than plastic, such as metal or paperboard.
Inventors
- 👤 Alvin B Oldenettel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:16
CPC Classifications
E; E04; E04G; E04G21/00; E04G21/14; E04G21/142; B; B66; B66C; B66C1/00; B66C1/10; B66C1/62; B66C1/66; B66C1/666
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
260 words
Apparatus for use in lifting objects of the type which are poured and set, comprising body means having first and second passages and designed for imbedding in an object which is poured and set, said second passage intersecting said first passage intermediate the length of said first passage, lift rod means insertable into said first passage and having a pair of crossed angular bores therethrough, each selectively alignable with said second passage and having connection means at its outer end, lock rod means having connection means at its outer end and being freely insertable into said second passage and into one of said crossed angular bores of said lift rod means to prevent removal of said lift rod means from said first passage, cooperating latch means on said lock rod means and in said second passage for positively retaining said lock rod means in said second passage whereby said lock rod means will not fall out of said second passage even though said object is rotated or inverted and whereby when said body means is imbedded within said object poured and set therearound with the rod-receiving ends of said first and second passages open exterior of the object said cooperating latch means comprising a spring-biased ball detent means disposed in a cavity in said lock rod means and a recess disposed in the wall of said second passage for receiving said ball detent means and said rods are inserted and said lock rod means is latched in place as described, said lifting rod may be employed in lifting the object.
Claim 2
Dependent Claim
260 words
Apparatus for use in lifting objects of the type which are poured and set, comprising body means having first and second passages and designed for imbedding in an object which is poured and set, said second passage intersecting said first passage intermediate the length of said first passage, lift rod means insertable into said first passage and having a pair of crossed angular bores therethrough, each selectively alignable with said second passage and having connection means at its outer end, lock rod means having connection means at its outer end and being freely insertable into said second passage and into one of said crossed angular bores of said lift rod means to prevent removal of said lift rod means from said first passage, cooperating latch means on said lock rod means and in said second passage for positively retaining said lock rod means in said second passage whereby said lock rod means will not fall out of said second passage even though said object is rotated or inverted and whereby when said body means is imbedded within said object poured and set therearound with the rod-receiving ends of said first and second passages open exterior of the object said cooperating latch means comprising a spring-biased ball detent means disposed in a cavity in said lock rod means and a recess disposed in the wall of said second passage for receiving said ball detent means and said rods are inserted and said lock rod means is latched in place as described, said lifting rod may be employed in lifting the object.
Claim 3
Dependent Claim
53 words
The combination of claim 1, said connection means at the outer end of said lift rod means comprising an eye formation alignable with said second passage to indicate when one or the other of said crossed angular bores is aligned with said second passage in position to receive said lock bar means therethrough.
Claim 4
Dependent Claim
12 words
The combination of claim 1, said body means being formed of plastic.
Claim 5
Dependent Claim
22 words
The combination of claim 3, said body means being in the form of intersecting sleeves forming said first and second passages therewithin.
Claim 6
Dependent Claim
36 words
The combination of claim 4, said body means having outwardly extending means around said sleeves for use in connecting said body means to a wall of a form within which said object is poured and set.
Claim 7
Dependent Claim
54 words
The combination of claim 5, said connection means at the outer ends of said lift rod means and lock rod means comprising eye formations, said apparatus including flange means around said lift and lock rods adjacent said eye formations adapted to abut the object when said rods are fully inserted into the respective sleeves.
Claim 8
Dependent Claim
50 words
The combination of claim 6, said connection means at the outer end of said lift rod means being alignable with said second passage to indicate when one or the other of said crossed angular bores is aligned with said second passage in position to receive said lock bar means therethrough.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |