US4277990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ratchet wrench
Assignee: JAF Inc A WI CORP
•
Filing: 1979-11-14
•
Granted: 1981-07-14
•
Expires: 1999-11-14
Abstract
Abstract A ratchet wrench for supporting removable wrench sockets of simplified construction employing a two-chambered pear shaped housing journaling a ratchet gear and a one-piece combined pawl and pawl reversal lever which are supported on parallel axes for limited rotational movement in mutual bearing engagement; such ratchet gear and pawl receiving additional bearing support from the walls of their respective chambers and being maintained in their rotational operating positions by a single retaining ring.
Inventors
- 👤 Roy L. Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:39
CPC Classifications
B; B25; B25B; B25B13/00; B25B13/46; B25B13/461; B25B13/462; B25B13/463
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
245 words
A ratchet wrench for driving removable drive sockets having bolt head or nut engaging means, comprising: an elongated handle member, an enlarged housing at one end of said handle member, formed with two internal cylindrical chambers, each closed over at one end by an integral portion of said housing, and having parallel axes and overlapping circumferences whereby said chambers openly communicate at their overlapping areas; one of said chambers having one open end which extends inwardly of an upper wall of said housing and the other of said chambers having one open end which extends inwardly of the bottom wall of said housing; a ratchet pawl member rotatably journaled in said one of said chambers in bearing relation with the walls thereof; a ratchet gear member having a toothed body and an axially depending socket supporting drive tang, rotatably journaled in the other of said chambers in bearing relation with the walls thereof; said pawl member having a pair of arcuately spaced teeth selectively engageable one at a time with the teeth of said gear member, yieldable detent means for maintaining said pawl member in either of two selected operating positions whereby to engage one of said pair of teeth with said gear member to thereby limit ratcheting rotation of the latter in clockwise or counter clockwise directions; and a single retainer means disposed within the confines of said housing and operable for simultaneously locking both said gear and pawl members in their respective chambers.
Claim 2
Dependent Claim
245 words
A ratchet wrench for driving removable drive sockets having bolt head or nut engaging means, comprising: an elongated handle member, an enlarged housing at one end of said handle member, formed with two internal cylindrical chambers, each closed over at one end by an integral portion of said housing, and having parallel axes and overlapping circumferences whereby said chambers openly communicate at their overlapping areas; one of said chambers having one open end which extends inwardly of an upper wall of said housing and the other of said chambers having one open end which extends inwardly of the bottom wall of said housing; a ratchet pawl member rotatably journaled in said one of said chambers in bearing relation with the walls thereof; a ratchet gear member having a toothed body and an axially depending socket supporting drive tang, rotatably journaled in the other of said chambers in bearing relation with the walls thereof; said pawl member having a pair of arcuately spaced teeth selectively engageable one at a time with the teeth of said gear member, yieldable detent means for maintaining said pawl member in either of two selected operating positions whereby to engage one of said pair of teeth with said gear member to thereby limit ratcheting rotation of the latter in clockwise or counter clockwise directions; and a single retainer means disposed within the confines of said housing and operable for simultaneously locking both said gear and pawl members in their respective chambers.
Claim 3
Dependent Claim
35 words
The combination of claim 1 wherein said retainer means is resiliently deformable, and said other of said chambers and said pawl member are provided with coplanar aligned recessed kerfs lockingly receptive of said retainer means.
Claim 4
Dependent Claim
25 words
The combination of claim 1 wherein said pawl member is joined with an operating lever manually accessible exteriorly of said upper wall of said housing.
Claim 5
Dependent Claim
28 words
The combination of claim 3 wherein said pawl member and operating lever are integrally unified and said lever is disposed in a recessed area in said upper wall.
Claim 6
Dependent Claim
21 words
The combination of claim 1, and guide means at the lower end of said pawl member for rotatably guiding the same.
Claim 7
Dependent Claim
32 words
The combination of claim 1, wherein the side walls of said chambers provide circumferential bearing support for said gear and pawl members, and the latter two members are in mutual bearing engagement.
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) | 1984-07-13 | 1985-01-12 | 1985-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-13 | 1989-01-12 | 1989-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-13 | 1993-01-12 | 1993-07-14 | $7700.00 | Window Closed / Lapsed |