Patent US3877328A successfully refreshed from Google Patents.
US3877328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
End wrench and socket with reducing inserts
Assignee: Individual
•
Filing: 1974-02-11
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Granted: 1975-04-15
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Expires: 1994-02-11
Abstract
Abstract The wrench has a nut drive body with an insert and nut reception cavity that permits the use of selected inserts to obtain a range of nut drive sizes. The cavity has a conventional hexagonal pattern over four sides, but the usual remaining two sides are replaced by a partial cylindrical arc which terminates in insert retaining ridges. In the socket configuration, an insert release opening is provided as is a bolt reception bore offset from the central axis of the socket.
Inventors
- 👤 Thomas Milton Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:45
CPC Classifications
B; B25; B25B; B25B13/00; B25B13/02; B25B13/04; B25B13/56
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
125 words
A wrench with provision for reducing inserts so that the wrench may be utilized to turn a wide range of nut sizes wherein the improvement comprises: a nut drive body having an insert and nut reception cavity in at least one side thereof, said cavity comprising two adjacent nut engagement flats and a diametrically opposed insert engagement channel, said insert engagement channel comprising a partial cylinder insert engagement surface, said nut engagement flats intersect at an included angle of 120*, each of said nut engagement flats intersects with accommodation flats at an included angle of 120*, said accommodation flats extend between said nut engagement flats to said insert engagement channel, an insert, said insert having a partial cylinder surface corresponding to said insert engagement surface.
Claim 2
Dependent Claim
125 words
A wrench with provision for reducing inserts so that the wrench may be utilized to turn a wide range of nut sizes wherein the improvement comprises: a nut drive body having an insert and nut reception cavity in at least one side thereof, said cavity comprising two adjacent nut engagement flats and a diametrically opposed insert engagement channel, said insert engagement channel comprising a partial cylinder insert engagement surface, said nut engagement flats intersect at an included angle of 120*, each of said nut engagement flats intersects with accommodation flats at an included angle of 120*, said accommodation flats extend between said nut engagement flats to said insert engagement channel, an insert, said insert having a partial cylinder surface corresponding to said insert engagement surface.
Claim 3
Dependent Claim
31 words
The wrench according to claim 1, further including: engagement means in said insert engagement channel for retaining said partial cylinder surfaces on said nut drive body and said insert in engagement.
Claim 4
Dependent Claim
25 words
The wrench according to claim 2, wherein: said engagement means comprises a pair of insert retention ridges at the Terminus of said insert engagement surface.
Claim 5
Dependent Claim
31 words
The wrench according to claim 1, wherein: said nut drive body comprises a substantially cylindrical socket member, said socket member having an insert insertion flange extending transversely of said socket member.
Claim 6
Dependent Claim
26 words
The wrench according to claim 1, wherein: said nut drive body is substantially circular and said insert and nut reception cavity extends completely through said body.
Claim 7
Dependent Claim
28 words
The wrench according to claim 4, wherein: said socket member includes an insert release opening into the insert and nut reception cavity at the position of said flange.
Claim 8
Dependent Claim
48 words
The wrench according to claim 4, wherein: said socket member further including a bolt reception bore extending interiorly from said insert insertion flange, said bolt reception bore having an axis that is parallel to but offset toward said nut engagement flats from the axis of said socket member.
References Cited (Backward Citations)
US949522A
Cited
US2801561A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |