Patent US4237754A successfully refreshed from Google Patents.
US4237754A
Expired / Lapsed
US
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Universal spud wrench
Assignee: TROUTT RAYMOND W
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Filing: 1979-07-12
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Granted: 1980-12-09
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Expires: 1999-07-12
Abstract
Abstract A universal spud wrench designed for rapid installation and removal of all types of spuds from drains, etc., including a tubular shaft having four perpendicularly oriented sloped surfaces forming slots, and aligned extensions adjacent said slots which are defined by differing diameters about a central axis.
Inventors
- 👤 Calvin H. Battrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:49
CPC Classifications
B; B25; B25B; B25B13/00; B25B13/02; B25B13/48
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
124 words
A multi-purpose spud wrench comprising: (a) a shaft with means for rotating said shaft about its axis; (b) plural perpendicularly oriented slots accommodating spud surfaces on at least one end of said shaft; (c) a first set of plural extensions defined by (1) an inside surface of said wrench; (2) radial extensions forming said slots; and (3) a first outside arced surface coaxial with said shaft; and (d) second plural extension adjacent said first extensions, defined by: (1) said inside surface of said wrench; (2) said plural radial extensions; and (3) a second larger outside arced surface coaxial with said shaft; and said slots being adjacent said first and second extensions, and sloping relatively outwardly from said first extension to said second outside diameter.
Claim 2
Dependent Claim
124 words
A multi-purpose spud wrench comprising: (a) a shaft with means for rotating said shaft about its axis; (b) plural perpendicularly oriented slots accommodating spud surfaces on at least one end of said shaft; (c) a first set of plural extensions defined by (1) an inside surface of said wrench; (2) radial extensions forming said slots; and (3) a first outside arced surface coaxial with said shaft; and (d) second plural extension adjacent said first extensions, defined by: (1) said inside surface of said wrench; (2) said plural radial extensions; and (3) a second larger outside arced surface coaxial with said shaft; and said slots being adjacent said first and second extensions, and sloping relatively outwardly from said first extension to said second outside diameter.
Claim 3
Dependent Claim
23 words
The wrench of claim 1 wherein two sets of the extension structure are provided and are attached to both ends of said shaft.
Claim 4
Dependent Claim
55 words
The wrench of claim 2 wherein said second arced surface and said slots join to form a circular surface equal to the diameter of said second arced surface at one end of said wrench and a surface greater in diameter than the diameter of said second arced surface at the other end of said wrench.
Claim 5
Dependent Claim
33 words
The wrench of claim 2 wherein one set of said slots is 3/8" in width and a second set of said slots, at the second end of said wrench is 5/16" in width.
Claim 6
Dependent Claim
62 words
The wrench of claim 2 wherein the diameter defined by said first arced surface is 1.310 inches, and the diameter defined by said second arced surface is 1.480 inches at one end of said wrench, and the diameter defined by said first arced surface is 1.585 inches and the second arced surface is 1.650 inches at the other end of said wrench.
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) | 1983-12-09 | 1984-06-09 | 1984-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-09 | 1988-06-09 | 1988-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-09 | 1992-06-09 | 1992-12-09 | $7700.00 | Window Closed / Lapsed |