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US3809250A Expired / Lapsed US ⏱️ 0.0 years remaining

Telescopic apparatus

Assignee: Ware Machine Works Inc
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Filing: 1973-04-16
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Granted: 1974-05-07
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Expires: 1993-04-16
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Abstract

Abstract Telescopic apparatus adapted for use with graders, trenchers or backhoes, loaders, lifters and the like which include an earth moving implement, dipperstick, hook or other tool, attachment or the like. The apparatus includes a first support which is adapted to be supported in relation to the ground. The boom includes a first longitudinally extending part which is pivotally associated with the first support for substantially vertical swinging movement relative thereto and a second longitudinally extending part which is slidable relative to the first part. It also includes longitudinally reciprocable means, such as an hydraulic cylinder and ram, and means for connecting one end thereof to the first part. A first arcuate member, such as a sheave or sprocket is rotatably mounted on the other end of the longitudinally reciprocable means substantially in alignment with its longitudinal centerline and a second arcuate member is rotatably mounted on said first longitudinally reciprocating means in spaced longitudinal relationship from said first arcuate member and from said first longitudinally reciprocable means and substantially in alignment with the longitudinal centerline thereof. First elongate flexible means, such as a chain or cable, is passed over the first arcuate member, one end thereof is connected to the first part and the other end is connected to the second part adjacent to its inner end. Second elongate flexible means is passed over the second arcuate member, one end thereof is connected to the first part and the other end thereof is connected to the second part at a locality towards the outer end thereof. A device or tool of the type described above is associated with the outer end of the second part. The second part and the attached device or tool are moved longitudinally relative to the first part upon actuation of the longitudinally reciprocable means, thereby facilitating the grading, digging, loading and/or lifting with the device. According to a preferred embodiment, the apparatus also includes another longitudinally reciprocable means for swinging the first part substantially vertically relative to the ground, one end of this means being pivotally connected to the first support and the other end being pivotally connected to the first part.

Inventors

  • 👤 J Pilch

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 18:14
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/30; E02F3/306; B; B66; B66C; B66C23/00; B66C23/62; B66C23/64; B66C23/70; B66C23/701

Claims Analysis

Total Claims: 18
Claim 1
Independent Claim 258 words
Telescopic apparatus comprising a first support adapted to be supported in relation to the ground, a first longitudinally extending part pivotally associated with said first support for substantially vertical swinging movement relative thereto, a second longitudinally extending part which is slidable relative to said first part, first longitudinally reciprocable means, means for connecting one end of said first longitudinally reciprocable means to said first part, a first arcuate member, means for rotatably mounting said first arcuate member on the other end of said first longitudinally reciprocable means, substantially in alignment with its longitudinal centerline, first elongate flexible means passing over said first arcuate member, means for connecting one end of said first elongate flexible means to said first part, means for connecting the other end of said first elongate flexible means to said second part, a second arcuate member, means for rotatably mounting said second arcuate member on said other end of said first longitudinally reciprocable means in spaced longitudinal relationship from said first arcuate member and from said first longitudinally reciprocable means and substantially in alignment with the longitudinal centerline thereof, second elongate flexible means passing over said second arcuate member, means for connecting one end of said second elongate flexible means to said first part, means for connecting the other end of said second elongate flexible means to said second part and a device associated with the outer end of said second part, whereby said second part and said device are moved longitudinally relative to said first part upon actuation of said first longitudinally reciprocable means.
Claim 2
Dependent Claim 258 words
Telescopic apparatus comprising a first support adapted to be supported in relation to the ground, a first longitudinally extending part pivotally associated with said first support for substantially vertical swinging movement relative thereto, a second longitudinally extending part which is slidable relative to said first part, first longitudinally reciprocable means, means for connecting one end of said first longitudinally reciprocable means to said first part, a first arcuate member, means for rotatably mounting said first arcuate member on the other end of said first longitudinally reciprocable means, substantially in alignment with its longitudinal centerline, first elongate flexible means passing over said first arcuate member, means for connecting one end of said first elongate flexible means to said first part, means for connecting the other end of said first elongate flexible means to said second part, a second arcuate member, means for rotatably mounting said second arcuate member on said other end of said first longitudinally reciprocable means in spaced longitudinal relationship from said first arcuate member and from said first longitudinally reciprocable means and substantially in alignment with the longitudinal centerline thereof, second elongate flexible means passing over said second arcuate member, means for connecting one end of said second elongate flexible means to said first part, means for connecting the other end of said second elongate flexible means to said second part and a device associated with the outer end of said second part, whereby said second part and said device are moved longitudinally relative to said first part upon actuation of said first longitudinally reciprocable means.
Claim 3
Dependent Claim 51 words
Apparatus according claim 1 wherein said first part comprises a first elongate slot extending through one wall thereof and said means for connecting the other end of said first elongate flexible means to said second part comprises a member which is attached to said second part and extends through said slot.
Claim 4
Dependent Claim 49 words
Apparatus according to claim 2 wherein said first part comprises a second elongate slot extending through one wall thereof, located towards the outer end of said first part from the end of said first elongate slot and with its longitudinal centerline substantially in alignment with said first elongate slot.
Claim 5
Dependent Claim 87 words
Apparatus according to claim 3 which also comprises a dipperstick, means for pivotally connecting the dipperstick to the outer end of said second part, second longitudinally reciprocable means, means for pivotally connecting one enD of said second longitudinally reciprocable means to said dipperstick and means for pivotally connecting the other end of said longitudinally reciprocable means to said second part, wherein said second slot is adapted to receive said latter means during at least a portion of the relative longitudinal movement of said first and second parts.
Claim 6
Dependent Claim 46 words
Apparatus according to claim 3 wherein said second slot is adapted to receive said means for connecting the other end of said second elongate flexible means to said second part during at least a portion of the relative longitudinal movement of said first and second parts.
Claim 7
Dependent Claim 25 words
Apparatus according to claim 1 wherein said first longitudinally reciprocable means and said first and second arcuate members are located exteriorly of said first part.
Claim 8
Dependent Claim 29 words
Apparatus according to claim 1 wherein said first longitudinally reciprocable means comprises an hydraulically operable cylinder and ram which are located adjacent to one wall of said first part.
Claim 9
Dependent Claim 13 words
Apparatus according to claim 1 wherein said first arcuate means comprises a sheave.
Claim 10
Dependent Claim 13 words
Apparatus according to claim 1 wherein said second arcuate means comprises a sheave.
Claim 11
Dependent Claim 13 words
Apparatus according to claim 1 wherein said first arcuate means comprises a sprocket.
Claim 12
Dependent Claim 13 words
Apparatus according to claim 1 wherein said second arcuate means comprises a sprocket.
Claim 13
Dependent Claim 14 words
Apparatus according to claim 1 wherein said first elongate flexible means comprises a chain.
Claim 14
Dependent Claim 14 words
Apparatus according to claim 1 wherein said second elongate flexible means comprises a chain.
Claim 15
Dependent Claim 14 words
Apparatus according to claim 1 wherein said first elongate flexible means comprises a cable.
Claim 16
Dependent Claim 14 words
Apparatus according to claim 1 wherein said second elongate flexible means comprises a cable.
Claim 17
Dependent Claim 57 words
Apparatus according to claim 1 which also comprises third longitudinally reciprocable means for swinging said first part substantially vertically relative to the ground, means for pivotally connecting one end of said third longitudinally reciprocable means to said first support and means for pivotally connecting the other end of said third longitudinally reciprocable means to said first part.
Claim 18
Dependent Claim 35 words
Apparatus according to claim 15 wherein said first longitudinally reciprocable means is positioned at least partially within said means for pivotally connecting said other end of said third longitudinally reciprocable means to said first part.

References Cited (Backward Citations)

US3129821A Cited
US3112035A Cited
US3224608A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-05-06 1977-11-05 1978-05-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-05-06 1981-11-05 1982-05-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-05-06 1985-11-05 1986-05-07 $7700.00 Window Closed / Lapsed

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