1. A hand-held tamping device for use in tamping asphalt or stone comprising:
a motor being connected to a rotating cam, said cam rotating in abutment with a reciprocating rod being spring-loaded via a spring acting upon a shoulder located on said reciprocating rod;
wherein a sleeve extends along the reciprocating rod, and is made of a material comprising a metal, rubber, carbon fiber, or plastic;
wherein the reciprocating rod has an overall length no less than 3 feet;
wherein the shoulder of the reciprocating rod and spring are located in a sub-housing extending from below the housing;
output of said motor is adjusted via a variable speed control that regulates the output speed of the motor;
wherein the variable speed control is positioned on an exterior surface of the housing;
said motor being powered by at least one rechargeable battery that is located within a housing, and wherein said rechargeable battery being recharged upon connection with a recharging cord;
wherein handles protrude from the housing and provide a means for handling the tamping device by a single individual;
wherein an onoff switch is positioned upon one of the handles and controls operation of the motor;
wherein a bottom end of said reciprocating rod being connected with a tamper plate that upon reciprocation impacts ground being tamped.
2. The tamping device as described in claim 1 wherein the reciprocating rod and tamper plate are made of a metal.
3. The tamping device as described in claim 1 wherein the sub-housing and the housing are made from materials comprising a plastic, metal, or carbon fiber composite.
4. A hand-held tamping device for use in tamping asphalt or stone comprising:
a motor being connected to a rotating cam, said cam rotating in abutment with a reciprocating rod being spring-loaded via a spring acting upon a shoulder located on said reciprocating rod;
wherein the reciprocating rod has an overall length no less than 3 feet;
the spring and shoulder of the reciprocating rod are housed inside of a sub-housing that extends from below a housing;
output of said motor is adjusted via a variable speed control that regulates the output speed of the motor;
said motor being powered by at least one rechargeable battery that is located within the housing, and wherein said rechargeable battery being recharged upon connection with a recharging cord;
wherein handles protrude from the housing and provide a means for handling the tamping device by a single individual;
an onoff switch is positioned upon one of the handles and controls operation of the motor;
wherein a bottom end of said reciprocating rod being connected with a tamper plate that upon reciprocation impacts ground being tamped;
wherein the reciprocating rod and tamper plate are made of a metal;
a sleeve extends down from the sub-housing along the reciprocating rod.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An electronic device, comprising:
a housing;
a stand member rotatably attached to a back surface of the housing by a spindle, the stand member having a lower surface which is inclined with respect to a line orthogonal to the front surface of the housing; and
a holding member configured to hold the stand member at a first protruding position where the stand member has been rotated a first angle of approximately 90 degrees from the housing and a second protruding position where the stand member has been rotated a second angle greater than the first angle from the housing,
wherein when the holding member holds the stand member at the first protruding position, the housing is placed in an upright posture by the lower surface of the stand member,
the holding member includes a regulating portion configured to regulate further rotation of the stand member at angles exceeding the second angle associated with the second protruding position; and
wherein an end portion of the stand member abuts on the regulating portion of the holding member and is rotated between a plate spring portion and the regulating portion of the holding member in said second protruding position, such that the end portion of said stand member presses and elastically deforms said plate spring portion of the holding member.
2. The electronic device according to claim 1, wherein the stand member is formed of a flexible material.
3. The electronic device according to claim 1, wherein the holding member is configured to provide a force to the spindle when the holding member holds the stand member at the first and second protruding positions while a pressing force is applied to the housing in a direction from the front surface to the back surface, wherein the force provided by the holding member to the spindle is greater at the first protruding position than at the second protruding position.
4. The electronic device according to claim 1, wherein the second angle associated with the second protruding position is approximately 135 degrees from the housing.
5. An electronic device, comprising:
a housing;
a stand member rotatably attached to a spindle on the back surface of the housing, the stand member having a lower surface which is inclined with respect to a line orthogonal to the front surface of the housing; and
a holding member including:
a plate spring portion configured to engage with an end portion of the stand member and hold the stand member at a first protruding position where the stand member has been rotated a first angle of approximately 90 degrees from the housing; and
a regulating portion configured to engage with the end portion of the stand member and hold the stand member at a second protruding position where the stand member has been rotated a second angle greater than the first angle from the housing and prevent further rotation greater than the second angle,
wherein when the holding member holds the stand member at the first protruding position, the housing is placed in an upright posture by the lower surface of the stand member; and
wherein the end portion of said stand member presses and elastically deforms the plate spring portion of the holding member when the stand member is at the second protruding position.
6. The electronic device according to claim 5, wherein the second angle associated with the second protruding position is approximately 135 degrees from the housing.
7. The electronic device according to claim 5, wherein the holding member is configured to provide a force to the spindle when the holding member holds the stand member at the first and second protruding positions while a pressing force is applied to the housing in a direction from the front surface to the back surface, wherein the force provided by the holding member to the spindle is greater at the first protruding position than at the second protruding position.