US20100199474A1 - Safety ratchet - Google Patents
Safety ratchet Download PDFInfo
- Publication number
- US20100199474A1 US20100199474A1 US12/705,395 US70539510A US2010199474A1 US 20100199474 A1 US20100199474 A1 US 20100199474A1 US 70539510 A US70539510 A US 70539510A US 2010199474 A1 US2010199474 A1 US 2010199474A1
- Authority
- US
- United States
- Prior art keywords
- spring
- tooth
- loaded wedge
- edged
- hinge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000000034 method Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P7/00—Securing or covering of load on vehicles
- B60P7/06—Securing of load
- B60P7/08—Securing to the vehicle floor or sides
- B60P7/0823—Straps; Tighteners
- B60P7/083—Tensioning by repetetive movement of an actuating member
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/21—Strap tighteners
- Y10T24/2175—Cargo tie down
Definitions
- Standard strap ratchets have no way to slowly release tension in a strap. They may automatically open and extend, releasing tension too quickly for certain applications, and furthermore allowing a person's fingers to be caught, resulting in injury. Many may struggle with standard strap ratchet devices in the field, for example when trying to use standard strap ratchets in settings where controlled strap tension is preferable.
- Safety ratchets provided herein solve the problem of safely releasing tension in strap ratchets.
- disclosed devices can be utilized in novel techniques to restring a hunting bow in the field.
- a safety ratchet can tighten and then quickly reverse to slowly release tension, instead of abruptly releasing tension.
- the safety ratchet may also be beneficial in any setting in which traditional strap ratchets may be otherwise deployed.
- FIG. 1 shows an example safety strap ratchet.
- FIG. 2 illustrates a mechanism as may be configured on the second spring-loaded wedge which is used to release the second spring-loaded wedge when in a raised position.
- FIG. 3A and FIG. 3B illustrate additional views of the mechanism from FIG. 2 .
- FIG. 4 illustrates a partial view of the outer frame, with particular attention to aspects of a lifting frame.
- FIG. 5 shows an example safety strap ratchet.
- FIG. 6 shows an example safety strap ratchet.
- FIG. 7 shows a strap ratchet tightening a bow.
- FIG. 8 shows a strap ratchet tightening a bow.
- FIG. 9 shows a strap ratchet tightening a bow.
- FIG. 10 shows a bottom cam for use with a strap ratchet and a bow.
- FIG. 11 shows a top cam for use with a strap ratchet and a bow.
- FIG. 1 illustrates one embodiment of a safety strap ratchet according to this disclosure.
- the example strap ratchet includes: an inner frame 122 comprising a base portion 122 A and a hinge portion 122 B; an outer frame 123 comprising a handle portion 123 A and a hinge portion 123 B; two tooth-edged hinge members such as 111 and 112 ; and a cylindrical strap grip 162 disposed perpendicular to the hinge portions of the inner frame 122 B, the outer frame 123 B, and the two tooth-edged hinge members 111 and 112 and running through the hinge members to adjoin the hinge portions of the inner frame 122 B, the outer frame 123 B, and the two tooth-edged hinge members 111 and 112 to form a hinge structure.
- the hinge structure comprises 122 A, 123 A, 111 , and 112 and the cylindrical strap grip 162 .
- the hinge structure comprises a tooth-edged hinge members 111 and 112 disposed between the inner frame 122 and the outer frame 123 on both sides of the hinge structure.
- FIG. 1 illustrates a first spring-loaded wedge 171 protruding from the inner frame 122 and configured to slide to engage the two tooth-edged hinge members 111 , thereby preventing rotation of the tooth-edged hinge members 111 and 112 from clockwise rotation with respect to the inner frame 122 , in at least one direction.
- the tooth edged hinge members 111 and 112 cannot rotate counter-clockwise with respect to the inner frame 112 when the wedge 171 is engaged.
- FIG. 1 illustrates a lifting frame 191 portion of the outer frame 123 B configured to push away the first spring-loaded wedge 171 , thereby disengaging the first spring-loaded wedge 171 from the two tooth-edged hinge members 111 and 112 , and configured to lower the first spring-loaded wedge 171 , thereby engaging the first spring-loaded wedge 171 with the two tooth-edged hinge members 111 and 112 .
- FIG. 1 illustrates a second spring-loaded wedge 131 disposed inside the handle portion of the outer frame 123 and configured to slide to engage the two tooth-edged hinge members 111 and 112 , thereby causing 111 and 112 to be rotated along with 123 via 131 as 123 is rotated counterclockwise.
- a lever 142 on the second spring-loaded wedge 131 may be configured to allow manual raising of the second spring-loaded wedge 131 to a raised position in which the second spring-loaded wedge 131 is disengaged from the two tooth-edged hinge members 111 and 112 .
- a mechanism 200 shown in FIGS. 2 , 3 A, and 3 B) on the second spring-loaded wedge 131 may be configured to release second spring-loaded wedge 131 from catch (small finger, FIG.
- a notch (raised portion of 122 B, not shown) is configured to encounter the mechanism's secondary wedge 212 which is against and behind (in respect to product) second spring-loaded wedge 131 (as can be seen in FIG. 2 ) when outer frame 123 A has been rotated approximately 110 to 120 degrees from 122 A.
- FIG. 2 illustrates a mechanism 200 as may be configured on the second spring-loaded wedge 131 .
- FIG. 2 depicts a “back” view of the mechanism 200 , as can be determined by the direction of the teeth on the tooth-edged hinge member 112 .
- mechanism secondary wedge 212 may be just wide enough to ride along the inner frame 122 B.
- portions of the second spring-loaded wedge 131 may ride inside of teeth of a tooth-edged hinge member such as 111 .
- FIG. 3A and FIG. 3B illustrate additional views of a mechanism 200 .
- FIG. 3A is a back view while FIG. 3B is a side view.
- the safety ratchet may be equipped with a catch on the inside of the outer frame 123 right above the shaft guide 210 as depicted in FIG. 3B , and a coinciding notch in the top of middle shaft of second spring-loaded wedge 131 (middle shaft is shown behind 211 in FIG. 2 ).
- a spring 301 may be connected to a shaft and mechanism secondary wedge 212 so that 131 moves separately from 212 and 211 .
- the secondary wedge 212 is long enough to touch the inner frame 122 B, but not wide enough to ride inside teeth of 111 and 112 .
- the wedge 131 is also long enough to touch inner frame 122 B, but is wide enough that it instead rides inside teeth of tooth-edged hinge members 111 and 112 .
- FIG. 4 illustrates a partial view of the outer frame 123 , with particular attention to aspects of a lifting frame 191 .
- the first spring-loaded wedge 171 may comprise tabs 421 extending outward to engage the lifting frame 191 , allowing the lifting frame 191 to lift 171 off of the tooth-edged hinge members 111 and 112 as the lifting frame 191 rotates on the pivot point 401 .
- FIG. 4 also illustrates a member 404 that may engage the tooth-edged hinge member 111 when the lifting frame 191 rotates on the pivot point 401 , and a groove 402 in the lifting frame 191 for engaging triangular element 141 to allow lifting of the lifting frame.
- the various other aspects of FIG. 4 are described with reference to the various other drawings provided herein, with like identifiers assigned to like elements.
- a method of operation can be understood with reference to FIG. 4 , as follows:
- 212 is brought back along 122 B, as 123 A rotates away from 122 A, to a location comprising notch (raised portion) on 122 B.
- the notch (raised portion) bumps 212 up so that 211 lifts catch (small finger, FIG. 3B ) out of notch in top of middle shaft of 131 (middle shaft depicted behind 211 in FIG. 2 ), which releases 131 back down to engage teeth of 111 and 112 .
- 123 A may be rotated all the way back away from 122 A, to bring 131 to an extra high raised portion of 122 B, which lifts 131 out of 111 and 112 . Meanwhile, another extended portion at left section of outer frame 122 B (as in 90 degrees left of 122 B from 122 A) pushes 171 away from 111 and 112 . This extension of 122 B can be seen in FIG. 1
- safety ratchets provided herein can be utilized to safely perform maintenance on compound or crossbows. Any of a variety of other uses may also be applicable.
- this product may utilize two slots on the sides on the handle and base portions of the outer and inner frames defined as 123 A and 122 A, by which the first and second spring-loaded wedges, 131 and 171 , are guided.
- An example of how the spring loaded wedges 131 and 171 are guided inside of slots in 123 A and 122 A via extensions (as shown for 171 by 421 in FIG. 4 ) can be seen at references 171 and 131 in FIG. 1 .
- the triangular members 141 and the lifting frame may be raised via a lever 142 at the top of the handle portion 123 A. This may be used to raise the lifting frame and push the wedge 171 away from the teeth 111 , 112 , releasing the ratchet and allowing the person to slowly release the tension on the strap while 404 is now engaged.
- This device may keep tension between the bow arms when restringing a bow in the field.
- One end of the strap 150 may comprise a pin (not shown) that goes into the bow structure as shown in FIG. 10 , and the other side of the strap 150 is permanently affixed to position 161 in FIG. 1 .
- Another strap 151 also comprises a pin that goes into the bow as shown in FIG. 11 , and other side of 151 is fed into strap grip 160 so as to be ratcheted by Safety Ratchet. Strap 150 is appropriately sized so as to position Safety Ratchet in middle of bow when it has been tightened.
- safety ratchet works by turning the cylinder 162 , which tightens a nylon strap 150 over what is being pulled in or secured.
- a safety ratchet may then release tension by the operator pulling up a lever 142 in the handle 123 A, which releases the tooth-edged hinge members 111 , 112 and cylinder 162 from the first and second spring-loaded wedges 131 and 171 and locks members 111 , 112 and cylinder 162 by member 404 ( FIG. 4 ). It then gradually lets the operator release the tension of strap grip 162 (rotate strap grip 162 clockwise) at his preferred rate via the rotation of the handle portion 123 A which is controlling strap grip 162 by tooth-edged members 111 and 112 through member 404 .
- the safety ratchet does not tighten the strap any more, as the handle 123 A is pulled back away from 122 A, because the ratchet is still in release mode, where the catch (small finger, FIG. 3B ) keeps wedge 131 in a raised position that is disengaged from the tooth members 111 and 112 , meanwhile the wedge 171 is lowered back into teeth of 111 and 112 when lever 142 is released and is now engaged with teeth of 111 and 112 so as to prevent them from moving clockwise further as operator is rotating back handle portion 123 A.
- Safety Ratchet automatically switches from release mode to normal ratcheting mode by means of described mechanism 120 ( FIG. 2 ) lifting catch (small finger, FIG. 3B ) out of notch at the top of middle shaft of second spring-loaded wedge 131 (as seen behind 211 in FIG. 2 ).
- This process is initiated by a small notch (raised portion) in inner frame 122 B at selected rotational angle in respect to a closed ratchet position (when 123 A is brought all the way down to 122 A), which is selected on basis of the most efficient amount of angular distance to allow operator to release tension in release mode.
- This is a design to not require the operator to do anything but bring the handle portion of the outer frame 123 A back to a certain point to change modes.
- FIG. 6 shows another view of an example safety strap ratchet.
- FIG. 7 , FIG. 8 , and FIG. 9 show various views of a strap ratchet tightening a bow.
- FIG. 10 and FIG. 11 show bottom and top cams, respectively, for use with a strap ratchet and a bow.
- This item may be produced from metal or another similar, durable material.
- the exact dimensions, materials used for construction and method of operation of Safety Ratchet may vary upon manufacturing.
Abstract
Safety ratchets provided herein allow for safely releasing tension in strap ratchets. A safety ratchet can tighten and then quickly reverse to slowly and controllably release tension, instead of abruptly releasing tension.
Description
- This non-provisional patent filing claims priority to U.S. Provisional Application 61/152,091, entitled “SAFETY RATCHET”, filed on Feb. 12, 2009, which is incorporated herein by reference.
- Standard strap ratchets have no way to slowly release tension in a strap. They may automatically open and extend, releasing tension too quickly for certain applications, and furthermore allowing a person's fingers to be caught, resulting in injury. Many may struggle with standard strap ratchet devices in the field, for example when trying to use standard strap ratchets in settings where controlled strap tension is preferable.
- Having a simple way to slowly and safely release the tension of a strap ratchet may assist individuals in staying safe while utilizing the instrument in a timely fashion. Safety ratchets provided herein solve the problem of safely releasing tension in strap ratchets. In some embodiments, disclosed devices can be utilized in novel techniques to restring a hunting bow in the field. A safety ratchet can tighten and then quickly reverse to slowly release tension, instead of abruptly releasing tension. The safety ratchet may also be beneficial in any setting in which traditional strap ratchets may be otherwise deployed.
-
FIG. 1 shows an example safety strap ratchet. -
FIG. 2 illustrates a mechanism as may be configured on the second spring-loaded wedge which is used to release the second spring-loaded wedge when in a raised position. -
FIG. 3A andFIG. 3B illustrate additional views of the mechanism fromFIG. 2 . -
FIG. 4 illustrates a partial view of the outer frame, with particular attention to aspects of a lifting frame. -
FIG. 5 shows an example safety strap ratchet. -
FIG. 6 shows an example safety strap ratchet. -
FIG. 7 shows a strap ratchet tightening a bow. -
FIG. 8 shows a strap ratchet tightening a bow. -
FIG. 9 shows a strap ratchet tightening a bow. -
FIG. 10 shows a bottom cam for use with a strap ratchet and a bow. -
FIG. 11 shows a top cam for use with a strap ratchet and a bow. -
FIG. 1 illustrates one embodiment of a safety strap ratchet according to this disclosure. The example strap ratchet includes: aninner frame 122 comprising abase portion 122A and ahinge portion 122B; anouter frame 123 comprising ahandle portion 123A and ahinge portion 123B; two tooth-edged hinge members such as 111 and 112; and acylindrical strap grip 162 disposed perpendicular to the hinge portions of theinner frame 122B, theouter frame 123B, and the two tooth-edged hinge members inner frame 122B, theouter frame 123B, and the two tooth-edged hinge members cylindrical strap grip 162. The hinge structure comprises a tooth-edged hinge members inner frame 122 and theouter frame 123 on both sides of the hinge structure. -
FIG. 1 illustrates a first spring-loadedwedge 171 protruding from theinner frame 122 and configured to slide to engage the two tooth-edged hinge members 111, thereby preventing rotation of the tooth-edged hinge members inner frame 122, in at least one direction. InFIG. 1 , the tooth edgedhinge members inner frame 112 when thewedge 171 is engaged. -
FIG. 1 illustrates alifting frame 191 portion of theouter frame 123B configured to push away the first spring-loadedwedge 171, thereby disengaging the first spring-loadedwedge 171 from the two tooth-edged hinge members wedge 171, thereby engaging the first spring-loadedwedge 171 with the two tooth-edged hinge members -
FIG. 1 illustrates a second spring-loadedwedge 131 disposed inside the handle portion of theouter frame 123 and configured to slide to engage the two tooth-edged hinge members lever 142 on the second spring-loadedwedge 131 may be configured to allow manual raising of the second spring-loadedwedge 131 to a raised position in which the second spring-loadedwedge 131 is disengaged from the two tooth-edged hinge members FIGS. 2 , 3A, and 3B) on the second spring-loadedwedge 131 may be configured to release second spring-loadedwedge 131 from catch (small finger,FIG. 3B ) positioned inside of theouter frame 123 right above theshaft guide 210 as depicted inFIG. 3B . A notch (raised portion of 122B, not shown) is configured to encounter the mechanism'ssecondary wedge 212 which is against and behind (in respect to product) second spring-loaded wedge 131 (as can be seen inFIG. 2 ) whenouter frame 123A has been rotated approximately 110 to 120 degrees from 122A. Causing mechanism'sshaft 211 to lift catch (small finger.FIG. 3B ) out of second spring-loadedwedge 131 resulting in 131 being released from raised position, causing the second spring-loadedwedge 131 to engage the two tooth-edged hinge members -
FIG. 2 illustrates amechanism 200 as may be configured on the second spring-loadedwedge 131. -
FIG. 2 depicts a “back” view of themechanism 200, as can be determined by the direction of the teeth on the tooth-edged hinge member 112. InFIG. 2 , mechanismsecondary wedge 212 may be just wide enough to ride along theinner frame 122B. Meanwhile, portions of the second spring-loadedwedge 131 may ride inside of teeth of a tooth-edged hinge member such as 111. -
FIG. 3A andFIG. 3B illustrate additional views of amechanism 200.FIG. 3A is a back view whileFIG. 3B is a side view. As may be understood with reference toFIG. 3B , the safety ratchet may be equipped with a catch on the inside of theouter frame 123 right above theshaft guide 210 as depicted inFIG. 3B , and a coinciding notch in the top of middle shaft of second spring-loaded wedge 131 (middle shaft is shown behind 211 inFIG. 2 ). These two aspects of design interact with one another in that the catch lowers into notch of middle shaft of second spring-loadedwedge 131 when second spring-loadedwedge 131 is raised up bylever 142, and therefore temporarily locks second spring-loadedwedge 131 in raised position away from both tooth-edged hinge members FIG. 3A , aspring 301 may be connected to a shaft and mechanismsecondary wedge 212 so that 131 moves separately from 212 and 211. Thesecondary wedge 212 is long enough to touch theinner frame 122B, but not wide enough to ride inside teeth of 111 and 112. While thewedge 131 is also long enough to touchinner frame 122B, but is wide enough that it instead rides inside teeth of tooth-edged hinge members -
FIG. 4 illustrates a partial view of theouter frame 123, with particular attention to aspects of alifting frame 191. The first spring-loadedwedge 171 may comprisetabs 421 extending outward to engage thelifting frame 191, allowing thelifting frame 191 to lift 171 off of the tooth-edged hinge members lifting frame 191 rotates on thepivot point 401.FIG. 4 also illustrates amember 404 that may engage the tooth-edged hinge member 111 when thelifting frame 191 rotates on thepivot point 401, and agroove 402 in thelifting frame 191 for engagingtriangular element 141 to allow lifting of the lifting frame. The various other aspects ofFIG. 4 are described with reference to the various other drawings provided herein, with like identifiers assigned to like elements. - A method of operation can be understood with reference to
FIG. 4 , as follows: - 1. An operator pulls up on lever 142 (see
FIG. 1 ), thereby raising second spring-loadedwedge 131 andtriangular element 141. The raising oftriangular element 141 results in the raising of liftingframe 191 which then in turn results in the pushing away of first spring-loadedwedge 171 from tooth-edgedhinge members member 404 into tooth-edgedhinge members hinge members - 2. In a “normal” operation mode, 212 is brought back along 122B, as 123A rotates away from 122A, to a location comprising notch (raised portion) on 122B. The notch (raised portion) bumps 212 up so that 211 lifts catch (small finger,
FIG. 3B ) out of notch in top of middle shaft of 131 (middle shaft depicted behind 211 inFIG. 2 ), which releases 131 back down to engage teeth of 111 and 112. - 3. In a “quick release” mode, 123A may be rotated all the way back away from 122A, to bring 131 to an extra high raised portion of 122B, which lifts 131 out of 111 and 112. Meanwhile, another extended portion at left section of
outer frame 122B (as in 90 degrees left of 122B from 122A) pushes 171 away from 111 and 112. This extension of 122B can be seen inFIG. 1 - In some embodiments, safety ratchets provided herein can be utilized to safely perform maintenance on compound or crossbows. Any of a variety of other uses may also be applicable.
- Referring to
FIG. 5 , this product may utilize two slots on the sides on the handle and base portions of the outer and inner frames defined as 123A and 122A, by which the first and second spring-loaded wedges, 131 and 171, are guided. An example of how the spring loadedwedges FIG. 4 ) can be seen atreferences FIG. 1 . There may be a spring-loadedwedge 131 in thehandle portion 123A that is on aspring 132. There may also be a catch (a small finger) that lowers into notch at top of middle shaft of second spring-loaded wedge 131 (as seen behind 211 inFIG. 2 ) whenlever 142 is raised by operator so as to lock second spring-loadedwedge 131 in raised position, thus preventing second spring-loadedwedge 131 from grabbing teeth of tooth-edgedhinge members base 122A by operator. There is a certain point when one is bringing back the handle defined by 123A, for example when the angle between 123A and 122A is about 110-120 degrees, at which themechanism wedge 212 is pushed upward by small notch (raised portion) of 122B. This causesmechanism shaft 211 to also rise up, then lift catch (small finger as seen inFIG. 3B ) out of notch in top of middle shaft of second spring loaded wedge (as seen behind 211 inFIG. 2 ) releasing second spring-loaded wedge out of raised position away from tooth-edgedmembers wedge 131 now lowers back into the teeth of tooth-edgedmembers strap grip 162 from rotating clockwise, this process brings Safety Ratchet back into normal ratcheting mode. - The
triangular members 141 and the lifting frame may be raised via alever 142 at the top of thehandle portion 123A. This may be used to raise the lifting frame and push thewedge 171 away from theteeth - This device may keep tension between the bow arms when restringing a bow in the field. One end of the
strap 150 may comprise a pin (not shown) that goes into the bow structure as shown inFIG. 10 , and the other side of thestrap 150 is permanently affixed toposition 161 inFIG. 1 . Another strap 151 (not shown) also comprises a pin that goes into the bow as shown inFIG. 11 , and other side of 151 is fed intostrap grip 160 so as to be ratcheted by Safety Ratchet.Strap 150 is appropriately sized so as to position Safety Ratchet in middle of bow when it has been tightened. - In some embodiments, safety ratchet works by turning the
cylinder 162, which tightens anylon strap 150 over what is being pulled in or secured. A safety ratchet may then release tension by the operator pulling up alever 142 in thehandle 123A, which releases the tooth-edgedhinge members cylinder 162 from the first and second spring-loadedwedges locks members cylinder 162 by member 404 (FIG. 4 ). It then gradually lets the operator release the tension of strap grip 162 (rotatestrap grip 162 clockwise) at his preferred rate via the rotation of thehandle portion 123A which is controllingstrap grip 162 by tooth-edgedmembers member 404. The operator then releases thelever 142 and pulls back thehandle 123A. At this stage, the safety ratchet does not tighten the strap any more, as thehandle 123A is pulled back away from 122A, because the ratchet is still in release mode, where the catch (small finger,FIG. 3B ) keepswedge 131 in a raised position that is disengaged from thetooth members wedge 171 is lowered back into teeth of 111 and 112 whenlever 142 is released and is now engaged with teeth of 111 and 112 so as to prevent them from moving clockwise further as operator is rotatingback handle portion 123A. - When the operator has pulled the
handle 123A back away from 122A to where he wants, he then repeats the process. Once all the tension is released, the operator then pulls the handle back to a position that was impossible to reach when there was tension in the strap. In this position the gear is totally released and the strap can be pulled out of the ratchet device by hand as described with reference to the quick release techniques described herein. - Safety Ratchet automatically switches from release mode to normal ratcheting mode by means of described mechanism 120 (
FIG. 2 ) lifting catch (small finger,FIG. 3B ) out of notch at the top of middle shaft of second spring-loaded wedge 131 (as seen behind 211 inFIG. 2 ). This process is initiated by a small notch (raised portion) ininner frame 122B at selected rotational angle in respect to a closed ratchet position (when 123A is brought all the way down to 122A), which is selected on basis of the most efficient amount of angular distance to allow operator to release tension in release mode. This is a design to not require the operator to do anything but bring the handle portion of theouter frame 123A back to a certain point to change modes. -
FIG. 6 shows another view of an example safety strap ratchet. -
FIG. 7 ,FIG. 8 , andFIG. 9 show various views of a strap ratchet tightening a bow.FIG. 10 andFIG. 11 show bottom and top cams, respectively, for use with a strap ratchet and a bow. - This item may be produced from metal or another similar, durable material. The exact dimensions, materials used for construction and method of operation of Safety Ratchet may vary upon manufacturing.
- The foregoing descriptions of specific embodiments have been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the precise forms disclosed, and many modifications and variations are possible in light of the above teaching. The exemplary embodiment was chosen and described in order to best explain the principles of the disclosure and its practical application, to thereby enable others skilled in the art to utilize the disclosure with various modifications as are suited to the particular use contemplated.
Claims (1)
1. A strap ratchet, comprising:
an inner frame comprising a base portion and a hinge portion;
an outer frame comprising a handle portion and a hinge portion;
two tooth-edged hinge members;
a cylindrical hinge member disposed perpendicular to the hinge portions of the inner frame, the outer frame, and the two tooth-edged hinge members and running through the hinge members to adjoin the hinge portions of the inner frame, the outer frame, and the two tooth-edged hinge members to form a hinge structure, wherein the hinge structure comprises a tooth-edged hinge member disposed between the inner frame and the outer frame on both sides of the hinge structure;
a first spring-loaded wedge protruding from the inner frame and configured to slide to engage the two tooth-edged hinge members, thereby preventing rotation of the two tooth-edged members from rotating;
a lifting frame portion of the outer frame configured to raise the first spring-loaded wedge, thereby disengaging the first spring-loaded wedge from the two tooth-edged hinge members, and configured to lower the first spring-loaded wedge, thereby engaging the first spring-loaded wedge with the two tooth-edged hinge members;
a second spring-loaded wedge disposed inside the handle portion of the outer frame and configured to slide to engage the two tooth-edged hinge members;
a lever on the second spring-loaded wedge configured to allow manual raising of the second spring-loaded wedge to a raised position in which the second spring-loaded wedge is disengaged from the two tooth-edged hinge members;
a mechanism on the second spring-loaded wedge configured to release the second spring-loaded wedge from a raised position when in release mode;
a raised portion disposed on the inner frame configured to encounter the mechanism on the second spring-loaded wedge and to cause the mechanism to release the second spring-loaded wedge from the raised position, thereby causing the second spring-loaded wedge to engage the two tooth-edged hinge members.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/705,395 US20100199474A1 (en) | 2009-02-12 | 2010-02-12 | Safety ratchet |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15209109P | 2009-02-12 | 2009-02-12 | |
US12/705,395 US20100199474A1 (en) | 2009-02-12 | 2010-02-12 | Safety ratchet |
Publications (1)
Publication Number | Publication Date |
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US20100199474A1 true US20100199474A1 (en) | 2010-08-12 |
Family
ID=42539156
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/705,395 Abandoned US20100199474A1 (en) | 2009-02-12 | 2010-02-12 | Safety ratchet |
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Country | Link |
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US (1) | US20100199474A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD770874S1 (en) | 2009-03-05 | 2016-11-08 | Cequent Consumer Products, Inc. | Ratchet for load-securing tie-down strap |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4199182A (en) * | 1977-10-31 | 1980-04-22 | Goteborgs Bandvaveri Ab | Device arranged to tighten and to lock slings or load-fastening belts |
US5103536A (en) * | 1990-05-03 | 1992-04-14 | Spanset Inter Ag | Tensioning apparatus for a lashing strap |
-
2010
- 2010-02-12 US US12/705,395 patent/US20100199474A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4199182A (en) * | 1977-10-31 | 1980-04-22 | Goteborgs Bandvaveri Ab | Device arranged to tighten and to lock slings or load-fastening belts |
US5103536A (en) * | 1990-05-03 | 1992-04-14 | Spanset Inter Ag | Tensioning apparatus for a lashing strap |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD770874S1 (en) | 2009-03-05 | 2016-11-08 | Cequent Consumer Products, Inc. | Ratchet for load-securing tie-down strap |
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