...In 1790, the cost to obtain a patent was between $4 and $5.
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7484301 | Hacksaw with a reciprocating blade A hacksaw with a reciprocating blade for minimizing the amount of manual action needed to operate the hacksaw. The hacksaw with a reciprocating blade includes a U-shaped housing with a hacksaw blade. A motor assembly is positioned in the interior of the housing. A p... | 02/03/2009 |
| 7325314 | Handsaw having replaceable blade A handsaw includes a handle, a blade removably mounted on the handle, and a press button pivotally mounted on the handle and detachably engaged with the blade to lock the blade on the handle and unlock the blade from the handle. Thus, the blade can be detached from ... | 02/05/2008 |
| 7210234 | Bow saw structure A bow saw structure including a handle, an adjustment unit and a fast installation/detachment unit. The handle has a grip section for a user's hand to extend through and hold. An upper side of the grip section is formed with a tunnel in which an L-shaped support mem... | 05/01/2007 |
| 7174643 | Hand tool The invention provides a frame (12) of a hack-saw (10) and, particularly, the handle formation (14), defines shoulder formations (22) that define a linear edge (24) on opposite sides of the extension formation (16), the oper... | 02/13/2007 |
| 7082636 | Bladed spoke wrench A bladed spoke wrench device used to retain the orientation of a bladed bicycle spoke to prevent unnecessary torsional displacements from being applied to the spoke during spoke tensioning and adjustment. The bladed spoke wrench includes two spoke retention slots of... | 08/01/2006 |
| 7063220 | Collapsible clothesline A collapsible clothesline apparatus 10 is disclosed which includes a base member 12. The base member 12 is provided with a plurality of wheels 18 coupled thereto for moving the base member 12 from one location to another. Additiona... | 06/20/2006 |
| 7024979 | Cutting template for cutting meat pieces A cutting template for use for cutting of a plurality of substantially equal size meat pieces. The cutting template is to be hand operated by being placed by the user in conjunction with a meat section and then the user takes the knife and severs the meat section th... | 04/11/2006 |
| 6961973 | Combination tool with hammer head, crescent wrench and pipe wrench A combination tool comprising a hammer head portion, a pipe wrench, a crescent wrench and a handle, wherein the pipe wrench and crescent wrench are located on opposite ends of the tool. The pipe wrench comprises an adjustable jaw and a fixed jaw, and the fixed jaw o... | 11/08/2005 |
| 6820340 | Low profile hacksaw A low profile hacksaw comprising an elongated blade having a cutting edge. A rigid I-beam frame member has a forward end portion and a maximum height portion. Preferably, the maximum height portion is located at the rear end of the frame member, but it may be locate... | 11/23/2004 |
| 6729030 | Hacksaw having easily operated blade tension device A hacksaw includes a frame having a chamber formed in a rear handle, an arm pivotally secured to the handle for tensioning a saw blade and having a rear oblong hole, a lever pivotally secured to the handle, and a tension rod pivotally secured to the lever and having... | 05/04/2004 |
| 6298564 | Portable hand saw The present invention is a lightweight collapsible hand saw for use when camping, hiking or otherwise. The saw breaks down and can be consolidated into a single tubular shape, with all of the components fitting inside the tube. In the functional configura... | 10/09/2001 |
| 6266887 | Hacksaw and method for making the same The present invention relates to hacksaws. One aspect of the invention relates to a hacksaw with an overmolded frame member wherein the overmolded material has an I-beam configuration. Another aspect of the invention relates to an improved blade tensionin... | 07/31/2001 |
| 6158131 | Collapsible saw A collapsible saw has a mechanism for releasably tensioning and locking a saw blade into position while also conferring lateral support for the blade, namely a cam lock mechanism. Additionally, a long channel member, a short member, and a saw blade are ea... | 12/12/2000 |
| 6134791 | Hacksaw having blade tension adjusting mechanism A hacksaw includes a frame and a handle. A lever is pivotally coupled to the handle. A link has a rear end pivotally secured to the bottom portion of the lever. A blade is secured between the link and the frame and is secured in place when the lever is ro... | 10/24/2000 |
| 6098294 | Hack saw An improved hacksaw for rigorous use has two embodiments, one with a high available cutting depth exceeding five inches, and another with a low clearance with attendant low cutting depth. The saw is easily constructed of inexpensive materials and has a bl... | 08/08/2000 |
| 6070330 | Hacksaw having cam-actuated blade tensioning mechanism A hacksaw of the type utilizing an elongated blade maintained tension between respective legs of the saw frame includes a cam-actuated blade tensioning mechanism. One leg of the saw frame includes a fixed blade pin for receipt through a mounting hole defi... | 06/06/2000 |
| 5826344 | Hacksaw having cam-actuated blade tensioning mechanism A hacksaw of the type utilizing an elongated blade maintained tension between respective legs of the saw frame includes a cam-actuated blade tensioning mechanism. One leg of the saw frame includes a fixed blade pin for receipt through a mounting hole defi... | 10/27/1998 |
| 5768788 | Hacksaw with improved blade tension mechanism A hacksaw includes a blade tensioning mechanism attached to the lower portion of the handle and connected to the blade through a blade holder. The end of the blade holder is observed via a tension indicator window at the lower portion of the handle, and t... | 06/23/1998 |
| 5590473 | Bow saw A bow saw includes a saw blade seat, a handle and at least one saw blade. The handle is pivotally connected with one end of the saw blade seat. The saw blade seat axially extends into one end of the handle by a certain length. The saw blade pivotally conn... | 01/07/1997 |
| 5577325 | Wood cutting blade attachment device The invention is to the combination of an attachment device and the combination of the attachment device with a saw blade for use with a standard hack saw frame. The attachment device has an arm that is inserted into one end of the hack saw frame where th... | 11/26/1996 |
| 5471752 | High tension hacksaw frame An improved blade tensioning mechanism carried by a hacksaw handle is disclosed. It consists of a longitudinally extending frame member with a handle attached at one end and a pivoting lever attached at the end opposite the handle. A blade anchoring pin, ... | 12/05/1995 |
| 5440816 | Collapsible handsaw A collapsible handsaw which can be erected and collapsed without tools includes, in a first embodiment, a saw blade, a foldable frame, and a flexible binder. In this embodiment the frame includes two frame portions wherein each is connected by a pin to an... | 08/15/1995 |
| 5349756 | Survival saw A collapsible multipurpose hand saw is useful for camping, hunting, backpacking, tree pruning, wood cutting and like outdoor uses. The saw comprises two handles, a crosspiece, a saw blade, a tensioning strap and a tensioning rod. The hand saw is easily as... | 09/27/1994 |
| 5208986 | Folding bucksaw A foldable bucksaw includes an elongated hollow box frame, which is also a blade storage sheath, with left and right handles connected by over center hinges to the ends of the box frame for movement between storage position and operative position. A screw... | 05/11/1993 |
| 4835869 | Hacksaw frame and blade holder A hacksaw frame having a blade holder having opposed blade clamping surfaces and means for locking the surfaces in clamping relationship loosely mounted on the frame for holding a hacksaw blade, and tensioning means on the frame for holding a blade under ... | 06/06/1989 |
| 4779345 | Collapsible bucksaw A collapsible bucksaw has an elongate straight sawblade and a collapsible H-shape frame with a central compression frame, a pair of end frames pivotally mounted to ends of the blade, a looped cord for a tightener and a rod to tighten the cord, the coil is... | 10/25/1988 |
| 4694618 | Sanding tool A band-type abrasive strip and hand tool holder which utilizes the resilience of the holder to enable the band to be applied to the holder or removed and also the same resilience to maintain tension on the band. Modified holders allow difference size band... | 09/22/1987 |
| 4637141 | Multi-purpose collapsible hand saw A multi-purpose saw is provided which can be selectively positionable in one of an assembled working mode and a storage mode. The saw comprises a hollow handle, a hollow back bar, a saw blade, a blade stop assembly and a hook retainer assembly for interco... | 01/20/1987 |
| 4376456 | Hack saw frame A hack saw frame having a handle assembly, a body assembly and a front assembly adapted to hold a hack saw therebetween. The front assembly is pivotly mounted on the body assembly with manual means for pivoting the front assembly. When the manual means is... | 03/15/1983 |
| 4367779 | Hacksaw with improved blade tensioning mechanism A hacksaw with an improved mechanism for adjusting the tension on the blade. The mechanism includes a lever for vertically moving a rod to pivot a rocker arm to place tension on the rocker arm-held blade. The rod has an adjustment knob at its lower end to... | 01/11/1983 |
| 4287922 | Foldable bucksaw A portable bucksaw employing a hollow tube as a cross support and a pair of bars pivotally attached on opposite sides of each end of the blade of the saw, the bars in one position extending through slots in the tube to a tensioning apparatus on the opposi... | 09/08/1981 |
| 4256156 | Multi-tension hacksaw A multi-tension hacksaw including a longitudinallly extending frame member having a first blade support member on one end and a bracket on the other end extending laterally therefrom a second blade support member pivotally mounted on the bracket, a tensio... | 03/17/1981 |
| 4186785 | Self-storing bucksaw A collapsible self-storing bucksaw includes the blade, a compression member, a tension member, and a pair of handle members. The handle assembly comprise a pair of hollow tubular members which fit together in telescopic fashion. When disassembled, the ten... | 02/05/1980 |
| 3954127 | Foldable bucksaw This saw, when folded, is a portable, compact package occupying a space no larger than the handles. These handles, which are pivotally connected to the saw blade, enclose the blade when folded to avoid personal injury in handling and to avoid damage to ad... | 05/04/1976 |