US4076217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for lifting a manhole cover
Assignee: DIVERSIFIED PRODUCTS & ENGINEERING Inc 4727 LOLLY DR MONROEVILLE PA 15146 A PA CORP
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Filing: 1976-05-14
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Granted: 1978-02-28
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Expires: 1996-05-14
Abstract
Abstract An apparatus is disclosed for lifting a manhole cover which comprises; (1) a means for engaging the manhole cover which cooperates with a lever means for raising and lowering the cover, and (2) a pivot means which also cooperates with the lever means to pivot the cover to the desired position.
Inventors
- 👤 George S. Haller
- 👤 Theodore C. Uphoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:44
CPC Classifications
B; B66; B66F; B66F19/00; B66F19/005
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
90 words
An apparatus for raising and lowering a manhole cover, said apparatus comprising: a) a scissor type lifting means for engaging the edges of said manhole cover; b) a lever which cooperates with said scissor type lifting means for raising and lowering said manhole cover in a vertical direction; and c) a combination fulcrum and pivoting means engageable with said lever to raise said manhole cover and to pivot said manhole cover, in a plane parallel to the surface of the ground, when said manhole cover is in a raised position.
Claim 2
Independent Claim
90 words
An apparatus for raising and lowering a manhole cover, said apparatus comprising: a) a scissor type lifting means for engaging the edges of said manhole cover; b) a lever which cooperates with said scissor type lifting means for raising and lowering said manhole cover in a vertical direction; and c) a combination fulcrum and pivoting means engageable with said lever to raise said manhole cover and to pivot said manhole cover, in a plane parallel to the surface of the ground, when said manhole cover is in a raised position.
Claim 3
Dependent Claim
35 words
An apparatus according to claim 1 further including a stop means on said lever adapted to abut said means for engaging said manhole cover so that said engaging means will not slide on said lever.
Claim 4
Dependent Claim
19 words
An apparatus according to claim 2 wherein said stop means is adjustable to a predetermined location on said lever.
Claim 5
Dependent Claim
20 words
An apparatus according to claim 1 wherein said lever has a hook on one end for engaging said lifting means.
Claim 6
Dependent Claim
60 words
An apparatus according to claim 1 wherein said combination fulcrum and pivoting means includes: a) a base; b) a cylindrical tube mounted on said base; c) a cylindrical pivot member mounted for pivotal movement inside said cylindrical tube; and d) means second to said pivot member-adjacent its top for engagement with said means for raising and lowering said manhole cover.
Claim 7
Dependent Claim
29 words
An apparatus according to claim 5 further including a bearing mounted inside said tube and on said base so that said pivot member is prevented from contacting said base.
Claim 8
Dependent Claim
18 words
An apparatus according to claim 5 wherein said means adjacent said pivot member is a generally U-shaped saddle.
Claim 9
Dependent Claim
46 words
An apparatus according to claim 1 wherein said combination fulcrum and pivoting means includes: a) a base; b) a support mounted on said base; and c) means secured to said support adjacent to top for engagement with said means for raising and lowering said manhole cover.
Claim 10
Dependent Claim
25 words
An apparatus according to claim 8 wherein said means for engagement with said means for raising and lowering said manhole cover is a ball joint.
References Cited (Backward Citations)
US339591A
Cited
US2297556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-27 | 1981-08-29 | 1982-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-27 | 1985-08-29 | 1986-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-27 | 1989-08-29 | 1990-02-28 | $7700.00 | Window Closed / Lapsed |