US5137314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catwalk grate lifting tool
Assignee: Individual
•
Filing: 1991-03-05
•
Granted: 1992-08-11
•
Expires: 2011-03-05
Abstract
Abstract A device for lifting catwalk grates comprising an elongated bent member with a handle at one end and a pair of notched braces and a hook at the opposite end that act in conjunction with each other to lock onto the grate and give mechanical advantage in lifting the grate.
Inventors
- 👤 Larry W. Gunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:29
CPC Classifications
B; B66; B66F; B66F15/00; B66F19/00; B66F19/005
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
131 words
A device for lifting a catwalk grate, said catwalk grate having a plurality of spaced apart slats, said device comprising: a hollow, elongate member having a first end and a second end; means for gripping said elongate member at said first end; a curved hook attached to said elongate member at said second end, said hook dimensioned for fitting between any two adjacent slats of said catwalk grate; a rod positioned internally to said second end to reinforce said second end of said elongate member; and a pair of braces attached to said elongate member at said second end in spaced relation to said curved hook so that said braces can both engage said catwalk grate when said curved hook is inserted between said any two slats of said catwalk grate.
Claim 2
Independent Claim
131 words
A device for lifting a catwalk grate, said catwalk grate having a plurality of spaced apart slats, said device comprising: a hollow, elongate member having a first end and a second end; means for gripping said elongate member at said first end; a curved hook attached to said elongate member at said second end, said hook dimensioned for fitting between any two adjacent slats of said catwalk grate; a rod positioned internally to said second end to reinforce said second end of said elongate member; and a pair of braces attached to said elongate member at said second end in spaced relation to said curved hook so that said braces can both engage said catwalk grate when said curved hook is inserted between said any two slats of said catwalk grate.
Claim 3
Dependent Claim
23 words
The device as recited in claim 1, wherein said at least one brace is notched to engage said slats of said catwalk grate.
Claim 4
Dependent Claim
25 words
The device as recited in claim 1, further comprising a support member attached to said elongate member between said first end and said second end.
Claim 5
Dependent Claim
34 words
The device as recited in claim 1, wherein said elongate member is bent and said device further comprises a support member attached to said elongate member between said first end and said second end.
References Cited (Backward Citations)
US1323052A
Cited
US1570192A
Cited
US1794471A
Cited
US2195667A
Cited
US2599938A
Cited
US3362684A
Cited
US3836119A
Cited
US3843981A
Cited
US3837622A
Cited
US3957247A
Cited
US3985338A
Cited
US4183503A
Cited
US4380326A
Cited
GB2096936A
Cited
US4488706A
Cited
US4482182A
Cited
US4650232A
Cited
US4826388A
Cited
US4746098A
Cited
US4838521A
Cited
US4991893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-11 | 1996-02-10 | 1996-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-11 | 2000-02-10 | 2000-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-11 | 2004-02-10 | 2004-08-11 | $7700.00 | Window Closed / Lapsed |