Patent US4254675A successfully refreshed from Google Patents.
US4254675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible ratchet wrench
Assignee: Individual
•
Filing: 1979-10-17
•
Granted: 1981-03-10
•
Expires: 1999-10-17
Abstract
Abstract A reversible ratchet wrench having a pivotable pawl element including a pair of pawls and a cam surface corresponding to each pawl. A resilient pusher member is eccentrically carried by a control rod and acts against the cam surfaces to pivot the pawl member when the rod is rotated. The rod is rotatably secured to a barrel located about and rotatably fixed to the body of the wrench in one axial position. The barrel has a detent positioned in one of two circumferentially spaced slots in the body in the first position, and in a circumferential notch in a second position. The slots open into the notch to allow axial movement and a spring urges the barrel toward the first position but is manually overcome to move the barrel to the second position for reversing.
Inventors
- 👤 James T. Marlow
- 👤 Carroll M. Bridges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:00
CPC Classifications
B; B25; B25B; B25B13/00; B25B13/46; B25B13/461; B25B13/462; B25B13/463
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
266 words
A reversible ratchet wrench having a body member including a socket receiving portion at one end and a handle portion longitudinally spaced therefrom, and a socket member including a ratchet wheel rotatable in said socket receiving portion, pawl means including a pair of oppositely disposed pawl members, journal means for pivotably mounting said pawl means for cooperative engagement of said pawl members with said ratchet wheel, each pawl member having wheel engaging and disengaging positions, and reversing means for turning said pawl means to position selectively one of said pawl members in said wheel engaging position and the other of said pawl members in said disengaged position for permitting rotation of said wheel in one direction, said reversing means comprising a control rod longitudinally journaled in said body member for rotation relatively thereto, presser means eccentrically carried by said control rod and disposed in engagement with said pawl means for turning said pawl means in a first direction to engage said one pawl member with said wheel and in the opposite direction to engage said other pawl member with said wheel in response to the rotational position of said rod, a barrel disposed about said handle portion and axially movable relatively thereto, coupling means for rotatably securing said barrel to said handle portion in a first axial position and for permitting rotation of said barrel in a second axial position, and means for rotatably securing said control rod to said barrel, whereby operator influenced movement of said barrel to said second axial position and subsequent rotation thereof rotationally repositions said rod to turn said pawl means.
Claim 2
Dependent Claim
266 words
A reversible ratchet wrench having a body member including a socket receiving portion at one end and a handle portion longitudinally spaced therefrom, and a socket member including a ratchet wheel rotatable in said socket receiving portion, pawl means including a pair of oppositely disposed pawl members, journal means for pivotably mounting said pawl means for cooperative engagement of said pawl members with said ratchet wheel, each pawl member having wheel engaging and disengaging positions, and reversing means for turning said pawl means to position selectively one of said pawl members in said wheel engaging position and the other of said pawl members in said disengaged position for permitting rotation of said wheel in one direction, said reversing means comprising a control rod longitudinally journaled in said body member for rotation relatively thereto, presser means eccentrically carried by said control rod and disposed in engagement with said pawl means for turning said pawl means in a first direction to engage said one pawl member with said wheel and in the opposite direction to engage said other pawl member with said wheel in response to the rotational position of said rod, a barrel disposed about said handle portion and axially movable relatively thereto, coupling means for rotatably securing said barrel to said handle portion in a first axial position and for permitting rotation of said barrel in a second axial position, and means for rotatably securing said control rod to said barrel, whereby operator influenced movement of said barrel to said second axial position and subsequent rotation thereof rotationally repositions said rod to turn said pawl means.
Claim 3
Dependent Claim
86 words
A reversible ratchet wrench as recited in claim 1, wherein said coupling means comprises a detent carried by said barrel projecting radially from the interior thereof, a notch extending about the periphery of said handle portion for at least substantially 180 degrees and adapted to receive said detent, a pair of detent receiving slots in said handle portion disposed substantially 180 degrees apart and opening into said notch, said slots defining said first axial position and said notch defining said second axial position of said barrel.
Claim 4
Dependent Claim
24 words
A reversible ratchet wrench as recited in claim 2, including biasing means for urging said barrel axially from said notch and toward said slots.
Claim 5
Dependent Claim
25 words
A reversible ratchet wrench as recited in claim 3, wherein said slots are disposed axially further from said socket receiving portion than is said notch.
Claim 6
Dependent Claim
100 words
A reversible ratchet wrench as recited in claim 1, wherein said pawl means comprises a unitary pawl element, said journal means being disposed intermediate said wheel and said rod, said pawl members being radially disposed on said element and arcuately spaced one from the other, said pawl element including a cam surface corresponding to each pawl member disposed radially opposite to the respective pawl member, said cam surfaces converging toward a junction intermediate said journal means and said rod, said presser means being engagable with said cam surfaces and said junction in response to the rotational position of said rod.
Claim 7
Dependent Claim
112 words
A reversible ratchet wrench as recited in claim 1, wherein said pawl means includes a cam surface corresponding to each pawl member, said surfaces converging toward a junction, said presser means comprising an elongated pusher member and biasing means for urging said pusher member toward engagement with said cam surfaces, said surfaces having a configuration and disposition relative to said journal means to move said pusher member toward said biasing means to store energy therein as said pusher member rotates toward a position for engagement with said junction and to release said energy as the pusher member rotates out of engagement with said junction and into engagement with a selected cam surface.
Claim 8
Dependent Claim
55 words
A reversible ratchet wrench as recited in claim 1 wherein said presser means comprises an elongated pusher member, means in said control rod defining a recess disposed eccentrically at an end thereof, said pusher member being disposed in said recess, and means for urging said pusher member outwardly from said recess toward said pawl means.
Claim 9
Dependent Claim
34 words
A reversible ratchet wrench as recited in claim 7, wherein said means for rotatably securing said control rod to said barrel includes means for permitting axial movement of the barrel relatively to said rod.
Claim 10
Dependent Claim
99 words
A reversible ratchet wrench as recited in claim 2, wherein said pawl means comprises a unitary pawl element, said journal means being disposed intermediate said wheel and said rod, said pawl members being radially disposed on said element and arcuately spaced one from the other, said pawl element including a cam surface corresponding to each pawl member disposed radially opposite to the respective pawl member, said cam converging toward a junction intermediate said journal means and said rod, said presser means being engagable with said cam surfaces and said junction in response to the rotational position of said rod.
Claim 11
Dependent Claim
112 words
A reversible ratchet wrench as recited in claim 2, wherein said pawl means includes a cam surface corresponding to each pawl member, said surfaces converging toward a junction, said presser means comprising an elongated pusher member and biasing means for urging said pusher member toward engagement with said cam surfaces, said surfaces having a configuration and disposition relative to said journal means to move said pusher member toward said biasing means to store energy therein as said pusher member rotates toward a position for engagement with said junction and to release said energy as the pusher member rotates out of engagement with said junction and into engagement with a selected cam surface.
Claim 12
Dependent Claim
55 words
A reversible ratchet wrench as recited in claim 9, wherein said presser means comprises an elongated pusher member, means in said control rod defining a recess disposed eccentrically at an end thereof, said pusher member being disposed in said recess and means for urging said pusher member out of said recess toward said pawl means.
Claim 13
Dependent Claim
24 words
A reversible ratchet wrench as recited in claim 11, including biasing means for urging said barrel axially from said notch and toward said slots.
Claim 14
Dependent Claim
34 words
A reversible ratchet wrench as recited in claim 12, wherein said means for rotatably securing said control rod to said barrel includes means for permitting axial movement of the barrel relatively to said rod.
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) | 1984-03-09 | 1984-09-08 | 1985-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-09 | 1988-09-08 | 1989-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-09 | 1992-09-08 | 1993-03-10 | $7700.00 | Window Closed / Lapsed |