Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 4629179 | Foot holding apparatus for use in performing sit-up exercises Foot holding apparatus for use in performing sit-up exercises has a pair of foot holding devices which are preferably separate and with each provided with a clamping device by which it can be secured to the bottom of a door. Each device has a convex seat ... | 12/16/1986 |
| 4629180 | Exercise device The conventional exercise device for performing sit-ups includes a base and a strap for holding the feet of the user on the base. The number of consecutive sit-ups performed by an exerciser can be dramatically increased by using an exercise device includi... | 12/16/1986 |
| 4609188 | Device for doing situps A portable device adapted to be secured to a generally horizontal board, vis a bench in a locker room or the like, operable to assist an exerciser in doing situps and related exercises. The device has a single flexible board strap and a pair of flexible l... | 09/02/1986 |
| 4602782 | Device for doing situps An exercise device is disclosed that operates with a swinging door to assist one in doing situps and related exercises. The device has a pair of wedge stops and strap means are secured to the stops and extended therebetween. Adjustment connection means ar... | 07/29/1986 |
| 4593902 | Exercise device An exercise device having a container formed from two mated halves releasably connected to one another and a flexible strap ending in loops capable of encircling one of the container halves which thereby provides a convenient, lightweight foot restraint, ... | 06/10/1986 |
| 4591148 | Portable clamp and anchor A portable clamp and anchor to restrain feet during sit-up exercises having two clamp pieces which are adjustably positioned on the bottom of a door and a foot restraining piece which is adjustably positioned relative to the clamp pieces. Hook and loop fa... | 05/27/1986 |
| 4582319 | Sit-up exercise bench A sit-up exercise bench comprising a horizontal platform connected to a slant-adjustable back rest, a harness adapted to be engaged by an exerciser's shoulder, said harness operably connected to a restraining spring attached to said horizontal frame where... | 04/15/1986 |
| 4550907 | Exercising appliance A device is disclosed which may be used by a person in the performance of a variety of exercises. The device includes in a preferred embodiment a substantially rectangular member pivotally joined together with an elongated member at respective ends thereo... | 11/05/1985 |
| 4516768 | Exercise device An exercising device including an inflatable flexible toroidal member such as a tire tube, a substantially rigid platform disposed over and supported by the toroidal member, and foot treads positioned on the platform. The exercising device can be used not... | 05/14/1985 |
| 4515361 | Exercising appliance A device is disclosed which may be used by a person in the performance of a variety of exercises. The device includes in a preferred embodiment two substantially rectangular members pivotally joined together at respective ends thereof. One of these member... | 05/07/1985 |
| 4509748 | Foot holding apparatus for sit-ups and like exercises A compact and readily portable foot holding apparatus for performing sit-ups and like exercises is disclosed. The device has a general "T" shaped appearance formed from a flat cross bar member having a pair of foot holding straps thereon and a substantial... | 04/09/1985 |
| 4508335 | Sit-up exerciser A simple, inexpensive and highly stable sit-up exerciser is disclosed having a horizontal frame and seat. The height and longitudinal position of the ankle-engaging portion of the device is adjustable relative to the seat and, where provided, the knee sup... | 04/02/1985 |
| 4468022 | Sit-up exercise apparatus A sit-up exercise apparatus having a structure that can be secured to the bottom of a door which comprises, means for restraining feet of an exerciser when performing a sit-up exercise, support means for supporting the foot restraining means at a height a... | 08/28/1984 |
| 4457510 | Exercising apparatus To support the feet of a user during ninety-degree bent-knee situps, a semi rigid panel is secured to a wall above the floor and a pair of juxtaposed Velcro hook-type patches are secured to the face of the panel. Conventional elastic foot-ankle supports o... | 07/03/1984 |
| 4417726 | Foot holddown device for performing situps A portable physical fitness piece of equipment embodying 2 foot stirrups, an anchor, center fist and a teflon covered flexible braided wire bonding anchor and fist. When placed below a bed rail, furniture leg, or between floor and door lower edge (not phy... | 11/29/1983 |
| 4378939 | Bed frame sit-up exerciser A device for holding a person's feet while doing "sit-up" exercises or the like, comprising a plate anchored to the left or right side of the metal "L" frame on either side of bed. Exerciser can be used in any radius from 0° to 180° on either side of be... | 04/05/1983 |
| 4372553 | Weight lifting device and method of exercising An exercising system for exercising the abdominal muscles in which the abdominal muscles are isolated and placed "on stretch" prior to contracture comprising an exercising device having a seat with a posteriorly curved, firm back in which the user sits an... | 02/08/1983 |
| 4369966 | Folding exercising apparatus A simple and versatile folding exercising apparatus which enables the user to perform a wide variety of weight training exercises. The apparatus includes an upstanding frame and a bench pivoted to the frame for movement between a laterally extended use po... | 01/25/1983 |
| 4332381 | Exercising device An exercising device made up of a high platform and spaced low pads supported on columns. The columns are supported on an H-shaped frame with the high platform column supported at the juncture of one leg of the H and the bar of the H at one side and the l... | 06/01/1982 |
| 4324399 | Exercising device A device for exercising particular muscles of a user as he selectively accomplishes various exercises in conjunction therewith. The device is characterized by an oblong board member having a size to comfortably support the user's torso and head. The board... | 04/13/1982 |
| 4323235 | Physical training apparatus for holding a person's feet when performing sit-ups Physical training apparatus for holding a person's feet while the person lies supine on a floor with his or her feet facing a closed door, includes a generally trapezoidally shaped foot bar support member which has a base portion with a planar bottom surf... | 04/06/1982 |
| 4241915 | Adjustable exercise apparatus A compactly foldable exercise apparatus is provided for performing the exercises of sit-ups and push-ups. An adjustably inclinable board provided with foot engaging means adjacent the forward end thereof is positioned generally above a base associated wit... | 12/30/1980 |
| 4230313 | Exercise device An exercise device for use in performing "sit-up" exercises comprises a base member for placement under a door, side members for embracing either side of the door, and a foot rest extending from one of the side members. The user's feet can be hooked under... | 10/28/1980 |
| 4212458 | Foot holding device for use in performing sit-up exercises A device for holding the feet of a person doing "sit-up" exercises has a U-shaped base to receive the bottom margin of a door, a head section provided with laterally spaced foot retainers and a connecting section outwardly and upwardly inclined to space t... | 07/15/1980 |
| 4185816 | Sit-up exercise apparatus A sit-up exercise apparatus adapted to be utilized in conjunction with a door having spaced apart vertically extending surfaces and a bottom intermediate the surfaces. The apparatus comprises a frame having oppositely disposed sides and adapted to be remo... | 01/29/1980 |
| 4182510 | Exercise shoe sit-up apparatus A foot restraining device for use during sit-up exercises. A rectangular platform which is tilted downward at a predetermined angle from its rear edge to its front edge is provided at its front edge with upwardly projecting, spaced apart jaws designed to ... | 01/08/1980 |
| 4182511 | Exerciser device An exercizer device is provided which is light weight, portable and collapsible. The device is adjustable to accommodate users of various heights. There is a substantially rectangular frame with two pairs of support legs, one pair being pivotally mounted ... | 01/08/1980 |
| 4182509 | Exercise device An exercise device for use in performing "sit-up" exercises comprises a base member for placement under a door, side members for embracing either side of the door, and a foot rest extending from one of the side members. The user's feet can be hooked under... | 01/08/1980 |
| 4176835 | Sit-up exercising device An exercising device for assisting in sit-up and leg-raising exercises has a frame with a flange adapted to be trapped beneath a door, the frame supporting a resilient foot engaging roller with shaft extensions which form hand grips. Hand grips extend out... | 12/04/1979 |
| 4121825 | Portable foot anchor for exercising A portable foot anchor that removably engages the lower portion of a door when the latter is in a closed position to permit a sling that forms a part of the anchor to be engaged by a foot of the user. The anchor when so disposed removably holds the foot of a u... | 10/24/1978 |
| 4116434 | Sit-up exercise apparatus A sit-up exercise apparatus adapted to be utilized in conjunction with a door having spaced apart vertically extending surfaces and a bottom intermediate the surfaces. The apparatus comprises frame means having oppositely disposed sides and adapted to be ... | 09/26/1978 |
| 4079933 | Exercise device for use in the performance of sit-ups An exercise device comprising a shoulder harness which is connected through a line extending over a pulley to individual handle members. The pulley is secured to a fixed support and the person using the device is positioned on the floor near and facing th... | 03/21/1978 |
