Patent Application
20120241700
This invention relates generally to a rope ascending device and more particularly, to a versatile rope clamp ascender with an integrated pulley block.
Rope ascenders and pulleys as used for rock climbing, rescuing or lifting purposes, are generally well known. An ascender and a pulley block combination is also well known, whereas the present invention offers unique properties and arrangements, the advantages of which are listed below in the Summary of the Invention.
Past inventions that include locking sheaves and that incorporate some of the basics of the present invention are numerous. Inventors are aware of U.S. Pat. Nos. 7,658,264 issued to Mauthner, Feb. 9, 2010 entitled, Combination descender, pulley and force limiting rope brake; 7,168,687 issued to Thompson, Jan. 30, 2007 entitled, Snatch block, snatch block assembly and method of use; 6,601,829 issued to Graham, Aug. 5, 2003 entitled, Pulley system with gripping block and tackle for load handling; 5,845,894 issued to Petzl, et al. Dec. 8, 1998 entitled, Pulley with a pivoting flange and built-in jammer; 5,664,640 issued to Smith Sep. 9, 1997 entitled Ascending cam and 723,231 issued to Benedict Mar. 24, 1903 entitled, Pulley Block; all of which are listed here for reference purpose only.
The unique design of this rope ascender with integrated pulley block, allows it to be used as either a conventional rope ascender to raise oneself by utilizing the rope clamp alone, or with a foot loop attached and it can be used in a 3 to 1 mechanical advantage pulley block configuration such as when lifting oneself, and or when an assistant helps raise a person or a load. The device can also be used to raise a person in a rescue without the help of the person being raised, as with the rescue of an incapacitated climber.
It should be mentioned that the device can be used in various other mechanical advantage lifting configurations.
The device comprises a front plate and a rear plate, where the front plate and the rear plate are arranged opposing one another and are pivotally connected to one another. Between the front plate and the rear plate a rope channel is defined, offset the rope channel, and between the front and rear plates is a pulley sheave. The pulley sheave is rotationally mounted to an axle so as to freewheel within the front and rear plates. The front plate and the rear plate are pivotally opened to load a rope in the rope channel as well as onto the pulley sheave, as may be required. The front plate and the rear plate are interlocked when closed by means of a fastener and a clasp. The clasp mounted on the rear plate overlaps a spline on the edge of the front plate, thereby increasing the rigidity of the front and rear plates when closed. Adjacent the rope channel also between the front plate and the rear plate, is a rope clamp, where the rope clamps holds onto a rope threaded through the rope channel when ascending the rope. The pulley sheave axle is centrally open therethrough to allow the attachment of a link, to attach a foot loop or other attachment.
A principal object of the invention is to provide a device that is versatile, enabling various ascending and rescue uses, by making possible various mechanical riggings.
Another object of the invention is to provide an apparatus that can be quickly and easily attached to a rope and easily enabled into use.
Another object of the present invention is to provide an improved device that is compact in size and easy to carry.
A further object is to provide a device that is capable of attaching a link for a foot loop or for an additional pulley block.
Yet a further object is to provide a device that is durable in use and yet cost effective to market.
The present invention has other objects and features of advantage, which will become apparent from and are set forth in more detail in the description and the accompanying drawings.
Advantages of the present invention will become more fully appreciated as the same becomes better understood when considered in conjunction with the following detailed description of an illustrative embodiment and accompanying drawings, in which like reference characters designate the same or similar parts throughout the several views, wherein;
Referring to
A freewheeling sheave 22 is mounted on a hollow spindle or axle 24, axle 24 is attached to rear plate 14, where axle 24 stretches between rear plate 14 up to front plate 12. Hollow opening in axle 24, axle opening 26, allows the connection of a carabiner (not shown) or other link through axle opening 26.
As in
The following exploded views are included to better reveal the assembly of device 10.
The foregoing descriptions of specific embodiments of the present invention have been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the invention to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated. While the invention has been described in its preferred embodiments, it is to be understood that the words which have been used are words of description and not of limitation. Therefore, changes may be made within the appended claims without departing from the true scope of the invention.
It is intended that the scope of the invention be defined by the Claims appended hereto and their equivalents, which should be given their fair and fullest scope.
