US5117714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
One-piece, open-end wrenching head with serrated jaws
Assignee: Snap On Inc
•
Filing: 1990-03-05
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Granted: 1992-06-02
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Expires: 2010-03-05
Abstract
Abstract The open-end wrenching head includes two jaws and a throat interconnecting the jaws. The jaws include planar jaw driving surfaces each with at least one serrated region thereon constructed and arranged to engage a portion of a selected side of a fastener. The throat may include either an arcuate surface or two planar throat driving surfaces having serrated regions thereon. Each of the serrated regions on the driving surfaces may include symmetrical or asymmetrical grooves. The plane of these grooves may be parallel to the driving surfaces or at an angle of about 1° to 3°.
Inventors
- 👤 William T. Pagac
- 👤 Frank Mikic
- 👤 Thomas S. Severson
- 👤 Douglas M. Sorbie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:16
CPC Classifications
B; B25; B25B; B25B13/00; B25B13/02; B25B13/08
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
118 words
A one-piece, open-end wrenching head for a fastener having a plurality of generally flat sides intersecting at a plurality of corners, the fastener having an across-sides dimension, said wrenching head comprising two jaws and a throat integrally interconnecting said jaws, said jaws including jaw driving surface portions spaced apart a predetermined distance slightly greater than the across-sides dimension of said fastener, the outermost end of each of said jaw driving surface portions being at a distance from the deepest point of said throat of 0.866 times the predetermined distance, at least one of said jaw driving surface portions having at least one serrated region thereon constructed and arranged to engage a portion of a side of the fastener.
Claim 2
Dependent Claim
118 words
A one-piece, open-end wrenching head for a fastener having a plurality of generally flat sides intersecting at a plurality of corners, the fastener having an across-sides dimension, said wrenching head comprising two jaws and a throat integrally interconnecting said jaws, said jaws including jaw driving surface portions spaced apart a predetermined distance slightly greater than the across-sides dimension of said fastener, the outermost end of each of said jaw driving surface portions being at a distance from the deepest point of said throat of 0.866 times the predetermined distance, at least one of said jaw driving surface portions having at least one serrated region thereon constructed and arranged to engage a portion of a side of the fastener.
Claim 3
Dependent Claim
11 words
The wrenching head of claim 1, wherein said throat is arcuate.
Claim 4
Dependent Claim
25 words
The wrenching head of claim 1, wherein said throat includes two planar throat driving surfaces adapted to simultaneously engage selected adjacent sides of the fastener.
Claim 5
Dependent Claim
25 words
The wrenching head of claim 1, wherein said head further includes two relief regions respectively located between said jaw driving surface portions and said throat.
Claim 6
Dependent Claim
18 words
The wrenching head of claim 1, wherein each of said serrated regions has a plurality of asymmetrical grooves.
Claim 7
Dependent Claim
18 words
The wrenching head of claim 1, wherein each of said serrated regions has a plurality of symmetrical grooves.
Claim 8
Dependent Claim
21 words
The wrenching head of claim 1, wherein each of said jaw driving surface portions has at least one serrated region thereon.
Claim 9
Dependent Claim
29 words
The wrenching head of claim 1, wherein said head further includes a jaw relief region on each of said jaw driving surface portions to receive corners of the fastener.
Claim 10
Dependent Claim
18 words
The wrenching head of claim 1, wherein each of said jaw driving surface portions has two serrated regions.
Claim 11
Dependent Claim
40 words
The wrenching head of claim 1, wherein a plane defined by each jaw driving surface portion is at an angle of about 1° to 3° to a plane defined by the serrated region associated with each jaw driving surface portion.
Claim 12
Dependent Claim
46 words
The wrenching head of claim 1, wherein said throat includes an arcuate surface, said serrated region includes a plurality of symmetrical grooves alternating with a plurality of lands, and said lands define a plane substantially parallel to the plane of the associated jaw driving surface portion.
Claim 13
Dependent Claim
63 words
The wrenching head of claim 1, wherein said throat includes an arcuate surface, said serrated region includes a plurality of symmetrical grooves alternating with a plurality of lands, said lands define a plane substantially parallel to the plane of the associated jaw driving surface portion and each of said jaw driving surface portions includes relief means to receive a corner of the fastener.
Claim 14
Dependent Claim
46 words
The wrenching head of claim 1, wherein said throat includes an arcuate surface, said serrated region includes a plurality of asymmetrical grooves alternating with a plurality of lands, and said lands define a plane substantially parallel to the plane of the associated jaw driving surface portion.
Claim 15
Dependent Claim
63 words
The wrenching head of claim 1, wherein said throat includes an arcuate surface, said serrated region includes a plurality of asymmetrical grooves alternating with a plurality of lands, said lands define a plane substantially parallel to the plane of the associated jaw driving surface portion, and each of said jaw driving surfaces portions including relief means to receive a corner of the fastener.
Claim 16
Dependent Claim
49 words
The wrenching head of claim 1, wherein said throat includes an arcuate surface, said serrated region includes a plurality of symmetrical grooves alternating with a plurality of lands, and said lands define a plane of about 1° to 3° to the plane of the associated jaw driving surface portion.
Claim 17
Dependent Claim
64 words
The wrenching head of claim 1, wherein said throat includes an arcuate surface, said serrated region includes a plurality of symmetrical grooves alternating with a plurality of lands, said lands define a plane of about 1° to 3° plane of the associated jaw driving surface portion, and each of said jaw driving surface portions including relief means to receive a corner of the fastener.
Claim 18
Dependent Claim
48 words
The wrenching head of claim 1, wherein said throat includes an arcuate surface, said serrated region includes a plurality of asymmetrical grooves alternating with a plurality of lands, and said lands define a plane of about 1° to 3° to the plane of the associated jaw driving surface.
Claim 19
Dependent Claim
66 words
The wrenching head of claim 1, wherein said throat includes an arcuate surface, said serrated region includes a plurality of asymmetrical grooves alternating with a plurality of lands, said lands define a plane of about 1° to 3° to the plane of the associated jaw driving surface portion, and each of said jaw driving surface portions including relief means to receive a corner of the fastener.
Claim 20
Dependent Claim
58 words
The wrenching head of claim 1, wherein said throat includes two planar throat driving surfaces adapted to simultaneously engage selected adjacent sides of the fastener, said serrated region includes a plurality of symmetrical grooves alternating with a plurality of lands, and said lands define a plane substantially parallel to the plane of the associated jaw driving surface portion.
Claim 21
Dependent Claim
75 words
The wrenching head of claim 1, wherein said throat includes two planar throat driving surfaces adapted to simultaneously engage selected adjacent sides of the fastener, said serrated region includes a plurality of symmetrical grooves alternating with a plurality of lands, said lands define a plane substantially parallel to the plane of the associated jaw driving surface portion, and each of said jaw driving surface portions including relief means to receive a corner of the fastener.
Claim 22
Dependent Claim
58 words
The wrenching head of claim 1, wherein said throat includes two planar throat driving surfaces adapted to simultaneously engage selected adjacent sides of the fastener, said serrated region includes a plurality of asymmetrical grooves alternating with a plurality of lands, and said lands define a plane substantially parallel to the plane of the associated jaw driving surface portion.
Claim 23
Dependent Claim
75 words
The wrenching head of claim 1, wherein said throat includes two planar throat driving surfaces adapted to simultaneously engage selected adjacent sides of the fastener, said serrated region includes a plurality of asymmetrical grooves alternating with a plurality of lands, said lands define a plane substantially parallel to the plane of the associated jaw driving surface portion, and each of said jaw driving surface portions including relief means to receive a corner of the fastener.
Claim 24
Dependent Claim
61 words
The wrenching head of claim 1, wherein said throat includes two planar throat driving surfaces adapted to simultaneously engage selected adjacent sides of the fastener, said serrated region includes a plurality of symmetrical grooves alternating with a plurality of lands, and said lands define a plane of about 1° to 3° to the plane of the associated jaw driving surface portion.
Claim 25
Dependent Claim
78 words
The wrenching head of claim 1, wherein said throat includes two planar throat driving surfaces adapted to simultaneously engage selected adjacent sides of the fastener, said serrated region includes a plurality of symmetrical grooves alternating with a plurality of lands, said lands define a plane of about 1° to 3° to the plane of the associated jaw driving surface portion, and each of said jaw driving surface portions including relief means to receive a corner of the fastener.
Claim 26
Dependent Claim
61 words
The wrenching head of claim 1, wherein said throat includes two planar throat driving surfaces adapted to simultaneously engage selected adjacent sides of the fastener, said serrated region includes a plurality of asymmetrical grooves alternating with a plurality of lands, and said lands define a plane of about 1° to 3° to the plane of the associated jaw driving surface portion.
Claim 27
Dependent Claim
78 words
The wrenching head of claim 1, wherein said throat includes two planar throat driving surfaces adapted to simultaneously engage selected adjacent sides of the fastener, said serrated region includes a plurality of asymmetrical grooves alternating with a plurality of lands, said lands define a plane of about 1° to 3° to the plane of the associated jaw driving surface portion, and each of said jaw driving surface portions including relief means to receive a corner of the fastener.
Claim 28
Dependent Claim
33 words
The wrenching head of claim 3, wherein each of said throat driving surfaces has at least one serrated region thereon constructed and arranged to engage a portion of another side of the fastener.
Claim 29
Dependent Claim
66 words
The wrenching head of claim 3, wherein each of said throat driving surfaces includes a pair of serrated regions thereon constructed and arranged so that one of said serrated regions engages a portion of one side of the fastener when the wrench is rotated in one direction and the other of said serrated regions engages a portion when the wrench is rotated in the opposite direction.
Claim 30
Dependent Claim
25 words
The wrenching head of claim 3, wherein each of said jaw driving surface portions includes a relief region to receive a corner of the fastener.
Claim 31
Dependent Claim
26 words
The wrenching head of claim 5, wherein the asymmetrical grooves of the two serrated regions on each of the jaw driving surface portions are oppositely directed.
Claim 32
Dependent Claim
18 words
The wrenching head of claim 9, wherein each of said serrated regions has a plurality of symmetrical grooves.
Claim 33
Dependent Claim
18 words
The wrenching head of claim 9, wherein each of said serrated regions has a plurality of asymmetrical grooves.
Claim 34
Dependent Claim
45 words
The wrenching head of claim 32, wherein the asymmetrical grooves of one of the serrated regions on each of the jaw driving surface portions are directed oppositely to the grooves of the other of the serrated regions on each of the jaw driving surface portions.
Claim 35
Dependent Claim
25 words
The wrenching head of claims 20, 21, 22, 23, 24, 25, wherein each of said throat driving surfaces has at least one serrated region thereon.
Claim 36
Dependent Claim
124 words
A wrench comprising a handle and a one-piece, open-end wrenching head for a fastener having a plurality of generally flat sides intersecting at a plurality of corners, the fastener having an across-sides dimension, said wrenching head comprising two jaws and a throat integrally interconnecting said jaws, said jaws including jaw driving surface portions spaced apart a predetermined distance slightly greater than the across-sides dimension of said fastener, the outermost end of each of said jaw driving surface portions being at a distance from the deepest point of said throat of 0.866 times the predetermined distance, at least one of said jaw driving surface portions having at least one serrated region thereon constructed and arranged to engage a portion of a side of the fastener.
Claim 37
Dependent Claim
124 words
A wrench comprising a handle and a one-piece, open-end wrenching head for a fastener having a plurality of generally flat sides intersecting at a plurality of corners, the fastener having an across-sides dimension, said wrenching head comprising two jaws and a throat integrally interconnecting said jaws, said jaws including jaw driving surface portions spaced apart a predetermined distance slightly greater than the across-sides dimension of said fastener, the outermost end of each of said jaw driving surface portions being at a distance from the deepest point of said throat of 0.866 times the predetermined distance, at least one of said jaw driving surface portions having at least one serrated region thereon constructed and arranged to engage a portion of a side of the fastener.
Claim 38
Dependent Claim
24 words
The wrench of claim 35, wherein each of said jaw driving surface portions includes a relief region to receive a corner of the fastener.
Claim 39
Dependent Claim
20 words
The wrench of claim 35, wherein said head further includes two relief regions respectively on said jaw driving surface portions.
Claim 40
Dependent Claim
20 words
The wrench of claim 35, wherein each of said jaw driving surface portions has at least one serrated region thereon.
Claim 41
Dependent Claim
29 words
The wrench of claim 35, wherein said head further includes a jaw relief region on each of said jaw driving surface portions to receive a corner of the fastener.
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) | 1995-06-02 | 1995-12-02 | 1996-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-02 | 1999-12-02 | 2000-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-02 | 2003-12-02 | 2004-06-02 | $7700.00 | Window Closed / Lapsed |