US3826469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Over-center load binder with variable mechanical advantage
Assignee: Individual
•
Filing: 1971-10-07
•
Granted: 1974-07-30
•
Expires: 1991-10-07
Abstract
Abstract An improved over-center type load binder having means to provide a variable mechanical advantage in conjunction with binding or unbinding a load and to facilitate unbinding a load in quick release fashion under safe operating conditions. The binder is defined by an elongated operating lever having a clevis configuration at one end, a pivoted yoke mounted adjacent such end, and a movable shank also mounted adjacent such end. Curved slots are formed in the clevis arm of the lever and the shank is provided with a pin which extends into such slots for rolling engagement with edge margins thereof. As the lever is moved towards the closed or load binding position, the location and configuration of the slots impart a variable mechanical advantage to the binder. Additionally, during movement of the lever toward the open or unbinding position, initial movement of the lever for a predetermined distance is under full control of the operator so that ''''flying'''' of the lever is obviated to minimize the chance of injury to the operator of the binder.
Inventors
- 👤 B Ratcliff
- 👤 R Ratcliff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:47
CPC Classifications
F; F16; F16G; F16G3/00; F16G3/006; B; B60; B60P; B60P7/00; B60P7/06; B60P7/08; B60P7/0823; B60P7/0838; B65; B65D; B65D63/00; B65D63/10; B65D63/14; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/1412; Y10T24/1418
Claims Analysis
Total Claims: 51
Claim 1
Independent Claim
235 words
In an over-center load binder for positively sustaining a load without manual assistance when said binder is in an overcenter load binding position, comprising an operating lever having an offset dog leg portion at one end thereof, a yoke pivotally connected with said lever in said offset portion, and a shank movably connected with said lever in said offset portion, the improvement comprising, A. a curved slot formed in said lever offset portion and extending generally transversely thereof, and B. a pin received in said shank and projecting laterally thereof and extending into said slot in said lever, 1. said pin being movable in said slot during movement of said lever between an over-center load binding position and a load unbinding position to permit movement of said shank between opposite ends of said slot during load binding and unbinding to impart variable mechanical advantage features to said binder, 2. said pin during movement of said lever from said load unbinding position toward said load binding position passing through and beyond a dead center location, whereby said lever will remain in said load binding position until physically moved therefrom, C. said slot being generally arcuate in overall contour but including a generally straight edge section adjacent one end thereof at which said pin is received when said binder is in said load binding position to facilitate load unbinding movement of said operating lever with attendant safety.
Claim 2
Dependent Claim
235 words
In an over-center load binder for positively sustaining a load without manual assistance when said binder is in an overcenter load binding position, comprising an operating lever having an offset dog leg portion at one end thereof, a yoke pivotally connected with said lever in said offset portion, and a shank movably connected with said lever in said offset portion, the improvement comprising, A. a curved slot formed in said lever offset portion and extending generally transversely thereof, and B. a pin received in said shank and projecting laterally thereof and extending into said slot in said lever, 1. said pin being movable in said slot during movement of said lever between an over-center load binding position and a load unbinding position to permit movement of said shank between opposite ends of said slot during load binding and unbinding to impart variable mechanical advantage features to said binder, 2. said pin during movement of said lever from said load unbinding position toward said load binding position passing through and beyond a dead center location, whereby said lever will remain in said load binding position until physically moved therefrom, C. said slot being generally arcuate in overall contour but including a generally straight edge section adjacent one end thereof at which said pin is received when said binder is in said load binding position to facilitate load unbinding movement of said operating lever with attendant safety.
Claim 3
Dependent Claim
28 words
each of said arms having an opening therein, said pin projecting laterally in opposite directions from said shank with opposite ends thereof received in said lever arm openings.
Claim 4
Dependent Claim
28 words
each of said arms having an opening therein, said pin projecting laterally in opposite directions from said shank with opposite ends thereof received in said lever arm openings.
Claim 5
Dependent Claim
10 words
a pin extending through a bore provided in said shank,
Claim 6
Dependent Claim
10 words
a pin extending through a bore provided in said shank,
Claim 7
Dependent Claim
9 words
said pin having a peripheral groove intermediate its ends,
Claim 8
Dependent Claim
9 words
said pin having a peripheral groove intermediate its ends,
Claim 9
Dependent Claim
44 words
The binder of claim 1 in whicH said pin is rotatably received within said shank in a bore extending therethrough so that said pin is rollable along an edge margin of said slot during movement of said lever between load binding and unbinding positions.
Claim 10
Dependent Claim
86 words
said pin during movement of said lever from said load unbinding position toward said load binding position passing through and beyond a dead center location, whereby said lever will remain in said load binding position until physically moved therefrom, C. said slot being generally arcuate in overall contour but including a generally straight edge section adjacent one end thereof at which said pin is received when said binder is in said load binding position to facilitate load unbinding movement of said operating lever with attendant safety.
Claim 11
Dependent Claim
86 words
said pin during movement of said lever from said load unbinding position toward said load binding position passing through and beyond a dead center location, whereby said lever will remain in said load binding position until physically moved therefrom, C. said slot being generally arcuate in overall contour but including a generally straight edge section adjacent one end thereof at which said pin is received when said binder is in said load binding position to facilitate load unbinding movement of said operating lever with attendant safety.
Claim 12
Dependent Claim
36 words
The binder of claim 1 in which the remainder of said edge of said slot is formed as the arc of a circle and merges with said generally straight portion intermediate opposite ends of said slot.
Claim 13
Dependent Claim
11 words
said bore in said shank having an internal groove therein, and
Claim 14
Dependent Claim
11 words
said bore in said shank having an internal groove therein, and
Claim 15
Dependent Claim
9 words
said pin and bore having aligned grooves therein, and
Claim 16
Dependent Claim
9 words
said pin and bore having aligned grooves therein, and
Claim 17
Dependent Claim
24 words
a resilient split ring connector interposed between said pin and said shank within said grooves to substantially permanently join said pin to said shank,
Claim 18
Dependent Claim
24 words
a resilient split ring connector interposed between said pin and said shank within said grooves to substantially permanently join said pin to said shank,
Claim 19
Dependent Claim
28 words
a resilient split ring interposed between said pin and said shank within said grooves to substantially permanently join said shank to said pin and thereby to said lever.
Claim 20
Dependent Claim
28 words
a resilient split ring interposed between said pin and said shank within said grooves to substantially permanently join said shank to said pin and thereby to said lever.
Claim 21
Dependent Claim
82 words
The binder of claim 1 in which said offset portion of said lever is clevis shaped and is defined by two generally parallel spaced arms each of which has a curved slot therein, the slots in said arms being generally identically contoured and aligned with each other, said pin extending laterally through a bore in said shank and projecting from said shank in opposite directions with opposite ends thereof received within said slots to movably connect said shank between said lever arms.
Claim 22
Dependent Claim
59 words
The binder of claim 4 in which said pin is provided with a peripheral groove intermediate its ends, said bore in said shank is provided with an internal groove, and a resilient split ring is interposed between said pin and said shank within said grooves to substantially permanently join said shank to said pin and thereby to said lever.
Claim 23
Dependent Claim
18 words
at least part of said pin projecting into said lever opening to join said shank with said lever.
Claim 24
Dependent Claim
18 words
at least part of said pin projecting into said lever opening to join said shank with said lever.
Claim 25
Dependent Claim
31 words
The binder of claim 1 which further includes detent structure at said one end of said slot for receiving said pin therein when said lever is in said load binding position.
Claim 26
Dependent Claim
21 words
The binder of claim 6 in which said detent structure comprises a pin receiving recess at said end of said slot.
Claim 27
Dependent Claim
41 words
The binder of claim 4 in which said slots are formed inwardly of the end of said lever offset portion and said yoke is pivotally connected with said lever at a location between said slot and said lever offset portion end.
Claim 28
Dependent Claim
42 words
The binder of claim 4 in which said binder offset portion is provided with boss members on said arms thereof which traverse said slots in said arms, said yoke being pivotally connected with said boss members generally in alignment with said slots.
Claim 29
Dependent Claim
51 words
In a load binder of the over-center type comprising A. an operating lever, B. a yoke member movably connected with said lever adjacent an end thereof, and C. a shank member also movably connected with said lever adjacent said end thereof, D. means connecting said shank member with said lever comprising
Claim 30
Dependent Claim
51 words
In a load binder of the over-center type comprising A. an operating lever, B. a yoke member movably connected with said lever adjacent an end thereof, and C. a shank member also movably connected with said lever adjacent said end thereof, D. means connecting said shank member with said lever comprising
Claim 31
Dependent Claim
13 words
The binder of claim 10 in which said lever end is defined by
Claim 32
Dependent Claim
36 words
The binder of claim 10 in which one end of said pin is tapered to facilitate insertion thereof through said split ring to effect expansion thereof when said pin and shank are interconnected with said lever.
Claim 33
Dependent Claim
97 words
An over-center load binder for positively sustaining a load without manual assistance when said binder is in an over-center load binding position, comprising A. an operating lever having an offset portion comprising laterally spaced arms defining one end thereof, B. a yoke pivotally connected with said lever offset portion, C. a shank movably connected with said lever offset portion between said arms thereof, D. generally curved opposed aligned slots formed in said arms of said offset portion and extending generally laterally thereof, and E. a pin extending through a bore in said shank and roTatably retained therein,
Claim 34
Dependent Claim
97 words
An over-center load binder for positively sustaining a load without manual assistance when said binder is in an over-center load binding position, comprising A. an operating lever having an offset portion comprising laterally spaced arms defining one end thereof, B. a yoke pivotally connected with said lever offset portion, C. a shank movably connected with said lever offset portion between said arms thereof, D. generally curved opposed aligned slots formed in said arms of said offset portion and extending generally laterally thereof, and E. a pin extending through a bore in said shank and roTatably retained therein,
Claim 35
Dependent Claim
31 words
The binder of claim 13 which further includes H. means connected with a free end of each said yoke and said shank for engaging said binder with a load hold-down element.
Claim 36
Dependent Claim
37 words
The binder of claim 13 in which the remainder of said edge of each said slot is formed as the arc of a circle and merges with said generally straight portion intermediate opposite ends of said slot.
Claim 37
Dependent Claim
59 words
The binder of claim 13 in which said pin is provided with a peripheral groove intermediate its ends, said bore in said shank is provided with an internal groove, and a resilient split ring is interposed between said pin and said shank within said grooves to substantially permanently join said shank to said pin and thereby to said lever.
Claim 38
Dependent Claim
41 words
The binder of claim 13 in which said slots are formed inwardly of the end of said lever offset portion and said yoke is pivotally connected with said lever at a location between said slot and said lever offset portion end.
Claim 39
Dependent Claim
42 words
The binder of claim 13 in which said lever offset portion is provided with boss members on said arms thereof which traverse said slots in said arms, said yoke being pivotally connected with said boss members generally in alignment with said slots.
Claim 40
Dependent Claim
33 words
The binder of claim 13 which further includes H. detent structure provided at said one ends of said slots for receiving said pin therein when said lever is in said load binding position.
Claim 41
Dependent Claim
23 words
The binder of claim 19 in which said detent structure comprises a pin receiving recess at said end of each of said slots.
Claim 42
Dependent Claim
71 words
In an over-center load binder comprising an operating lever having an offset dog leg portion at one end thereof, a yoke pivotally connected with said lever in said offset portion, and a shank movably connected with said lever in said offset portion, A. said lever offset portion being clevis shaped and defined by two generally parallel spaced arms each of which has a curved slot therein which extends generally transversely thereof,
Claim 43
Dependent Claim
71 words
In an over-center load binder comprising an operating lever having an offset dog leg portion at one end thereof, a yoke pivotally connected with said lever in said offset portion, and a shank movably connected with said lever in said offset portion, A. said lever offset portion being clevis shaped and defined by two generally parallel spaced arms each of which has a curved slot therein which extends generally transversely thereof,
Claim 44
Dependent Claim
96 words
An over-centEr load binder for positively sustaining a load without manual assistance when said binder is in an over-center load binding position, comprising A. an operating lever having an offset portion comprising laterally spaced arms defining one end thereof, B. a yoke pivotally connected with said lever offset portion, C. a shank movably connected with said lever offset portion between said arms thereof, D. generally curved opposed aligned slots formed in said arms of said offset portion and extending generally laterally thereof, and E. a pin extending through a bore in said shank and retained therein,
Claim 45
Dependent Claim
96 words
An over-centEr load binder for positively sustaining a load without manual assistance when said binder is in an over-center load binding position, comprising A. an operating lever having an offset portion comprising laterally spaced arms defining one end thereof, B. a yoke pivotally connected with said lever offset portion, C. a shank movably connected with said lever offset portion between said arms thereof, D. generally curved opposed aligned slots formed in said arms of said offset portion and extending generally laterally thereof, and E. a pin extending through a bore in said shank and retained therein,
Claim 46
Dependent Claim
31 words
The binder of claim 22 which further includes H. means connected with a free end of each said yoke and said shank for engaging said binder with a load hold-down element.
Claim 47
Dependent Claim
38 words
The binder of claim 22 in which the remainder of said edge of each of said slot is formed as the arc of a circle and merges with said generally straight portion intermediate opposite ends of said slot.
Claim 48
Dependent Claim
41 words
The binder of claim 22 in which said slots are formed inwardly of the end of said lever offset portion and said yoke is pivotally connected with said lever at a location between said slots and said lever offset portion end.
Claim 49
Dependent Claim
42 words
The binder of claim 22 in which said lever offset portion is provided with boss members on said arms thereof which traverse said slots in said arms, said yoke being pivotally connected with said boss members generally in alignment with said slots.
Claim 50
Dependent Claim
33 words
The binder of claim 22 which further includes H. detent structure provided at said one ends of said slots for receiving said pin therein when said lever is in said load binding position.
Claim 51
Dependent Claim
23 words
The binder of claim 27 in which said detent structure comprises a pin receiving recess at said end of each of said slots.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |