US5630633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shovel with driven tiltable blade
Assignee: Individual
•
Filing: 1996-04-22
•
Granted: 1997-05-20
•
Expires: 2016-04-22
Abstract
Abstract A shovel having a blade and a handle pivotally mounted on the back of the blade with a mechanism for pivotally retaining the handle at various angles relative to the blade between an open and a closed position. A releasable locking mechanism is operable for releasing and relocking the blade relative to the handle at different relative angles between the open and closed positions. A spring bias drive is connected between the blade and the handle and is adapted for pivoting the blade under bias relative to the handle from the open position towards the closed position when the releasable locking mechanism is actuated or released.
Inventors
- 👤 Herman K. Dupre
- 👤 Charles Bihun, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:51
CPC Classifications
A; A01; A01B; A01B1/00; A01B1/22; A01B1/222
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
111 words
A shovel comprising: a shovel blade having a front and a back, a handle pivotally mounted on the back of said blade with a mechanism for pivotally retaining the handle at various angles relative to said blade between an open position and a closed position, and a releasable locking mechanism operable for releasing and relocking said blade relative to said handle at different relative angles between said open and closed positions, the improvement comprising a spring biased drive connected between said blade and said handle and for pivoting said blade under bias relative to said handle from said open position toward said closed position when said releasable locking mechanism is released.
Claim 2
Dependent Claim
111 words
A shovel comprising: a shovel blade having a front and a back, a handle pivotally mounted on the back of said blade with a mechanism for pivotally retaining the handle at various angles relative to said blade between an open position and a closed position, and a releasable locking mechanism operable for releasing and relocking said blade relative to said handle at different relative angles between said open and closed positions, the improvement comprising a spring biased drive connected between said blade and said handle and for pivoting said blade under bias relative to said handle from said open position toward said closed position when said releasable locking mechanism is released.
Claim 3
Dependent Claim
25 words
The shovel of claim 1, including adjustable stops positioned for adjusting limits of maximum pivotal extension for said handle between said open and closed positions.
Claim 4
Dependent Claim
12 words
The shovel of claim 2 wherein said drive includes a stretch spring.
Claim 5
Dependent Claim
68 words
The shovel of claim 3, said releasable locking mechanism including a rearwardly projecting notched quadrant secured to the back of said blade and providing a series of notches, an actuating rod slidably secured to said handle and a right angular projection on a lower end of said rod for selective engagement with said notches, and a spring connected for urging said projection into engagement with a selected notch.
Claim 6
Dependent Claim
56 words
The shovel of claim 4, said releasable locking mechanism further including a trigger pivotally secured to said handle and also pivotally secured to an upper end of said rod for hand engagement of said trigger to disengage said projection from one of said notches and thereby tilt said blade back under applied bias of said drive.
Claim 7
Dependent Claim
10 words
The shovel of claim 1 wherein said blade includes sides.
Claim 8
Dependent Claim
17 words
The shovel of claim 6 wherein said blade is a cut-out portion of a used plastic drum.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-05-19 | 2000-11-18 | 2001-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-05-19 | 2004-11-18 | 2005-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-05-19 | 2008-11-18 | 2009-05-20 | $7700.00 | Window Closed / Lapsed |