# US 8,771,152 B1 · Fitness bag and methods of use > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,771,152 B1 - Document ID: US8771152B1 - Status: Granted - Kind: B1 - Application number: 13/311,061 - Filed: 2011-12-05 - Granted: 2014-07-08 - Earliest claimed: 2010-12-03 - Applicants: Frank B. Silverman; Michael J. Metzger - Inventors: Frank B. Silverman; Michael J. Metzger - Web page: https://patentgrep.com/patent/US8771152B1 ## CPC - A63B 69/22: mounted on, or suspended from, a fixed support - A63B 2244/10: Combat sports - A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H) ## Abstract A fitness bag of the invention includes a body that is elongated along an axis and has a generally circumferential surface, a first axial end surface, and a second axial end surface opposite the first axial end surface. The generally circumferential surface preferably has a radially constricted section between first and second radially enlarged sections. The first radially enlarged section is located between the radially constricted section and the first axial end surface while the second radially enlarged section is located between the first radially constricted section and the second axial end surface. A plurality of side handles may be arranged in radially opposed pairs along the body and oriented such that the ends of each handle extend towards the first and second axial end surfaces. The fitness bag is adapted to be placed both horizontally and vertically on the ground and struck by an appendage of the user. ## Claims ### Claim 1 A fitness bag comprising: a body elongated along an axis and having a generally circumferential surface, a first axial end surface, and a second axial end surface opposite the first axial end surface; the generally circumferential surface having a first radially constricted section between a first and a second radially enlarged section and a second radially constricted section between the first radially enlarged section and the first axial end surface; the first radially enlarged section including first and second generally frustoconical portions, the first generally frusto-conical portion sloping radially outwards from the second radially constricted section and the second generally frusto-conical portion sloping radially outwards from the first radially constricted section; the second radially enlarged section being between the first radially constricted section and the second axial end surface and including a third generally frusto-conical portion and a generally cylindrical radially enlarged portion, the third generally frustoconical portion sloping radially outwards from the first radially constricted section towards the generally cylindrical radially enlarged portion, the generally cylindrical radially enlarged portion being between the third frusto-conical portion and the second axial end surface; and a plurality of side handles arranged in radially opposed pairs along the body and oriented such that the ends of each handle extend towards the first and second axial end surfaces wherein a first radially opposed pair of side handles is located on the first radially enlarged section and a second radially opposed pair of side handles is located on the second radially enlarged section. ### Claim 2 (depends on 1) The fitness bag of claim 1, further comprising a handle on the first axial end surface. ### Claim 3 (depends on 1) The fitness bag of claim 1, wherein the first and second generally frusto-conical portions meet to form a symmetric frusto-conical pair radially enlarged at a center of the symmetric frusto-conical pair. ### Claim 4 (depends on 3) The fitness bag of claim 3, wherein the diameter of the generally cylindrical portion is approximately the same as the diameter at the center of the symmetric frustoconical pair. ### Claim 5 (depends on 1) The fitness bag of claim 1, wherein the first radially opposed pair of side handles is located on the first generally frusto-conical portion, a third radially opposed pair of side handles is located on the second generally frusto-conical portion, the second radially opposed pair of side handles is located on the third generally frusto-conical portion, and a fourth radially opposed pair of side handles is located on the generally cylindrical radially enlarged portion. ### Claim 6 A portable fitness bag adapted to be shifted from one position to another by a user, the fitness bag comprising: a body elongated along an axis and having a generally circumferential surface, a first axial end surface, and a second axial end surface opposite the first axial end surface; the generally circumferential surface having a radially constricted section between first and second radially enlarged sections; the first radially enlarged section being between the radially constricted section and the first axial end surface; the second radially enlarged section being between the radially constricted section and the second axial end surface; a plurality of side handles arranged in radially opposed pairs along the body and oriented such that the ends of each handle extend towards the first and second axial end surfaces, wherein: the fitness bag is adapted to be placed both horizontally and vertically on the ground and struck by an appendage of the user and a first radially opposed pair of side handles is located on the first radially enlarged section, a second radially opposed pair of side handles is located on the second radially enlarged section, and wherein the side handles along a given side are aligned lengthwise and along the axis. ### Claim 7 (depends on 6) The fitness bag of claim 6, wherein the first and a third pair of radially opposed side handles are located on the first radially enlarged section, the second and a fourth pair of radially opposed side handles are located on the second radially enlarged section, and wherein the side handles along a given side are aligned lengthwise and along the axis.