Patent US3866693A successfully refreshed from Google Patents.
US3866693A
Expired / Lapsed
US
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Vibratory impact hammer
Assignee: Allied Steel and Tractor Products Inc
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Filing: 1973-06-11
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Granted: 1975-02-18
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Expires: 1993-06-11
Abstract
Abstract An impact force producing apparatus that is described in connection with one particularly suitable use on a backhoe vehicle although it is usable on other vehicles and apparatus. A frame is provided which can be attached directly to the backhoe. A heavy ram is flexibly mounted to the frame in such a manner that it may freely oscillate relative to the frame. Attached to the ram is a hydraulic motor coupled with an eccentric weight to provoke vibrational movement in the ram. The relative inertias and locations of the components, the resilient mountings and the driving force of the eccentric weight are interrelated to create a vibratory motion in the ram which provides a unidirectional impact on a tool positioned on the frame and drives the ram near a resonance of the system. Guides may be provided to eliminate secondary harmonics and extraneous vibrations and movements.
Inventors
- 👤 Bernard A Century
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:44
CPC Classifications
B; B25; B25D; B25D11/00; B25D11/06; B25D9/00; B25D9/06; B25D9/12; E; E02; E02F; E02F3/00; E02F3/04; E02F3/96; E02F3/966; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18344
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
104 words
An impact force producing apparatus, comprising a support frame; an impacting member resiliently mounted on said frame for relatively free vibrational movement thereof; a plurality of resilient elements, each resilient element being attached at one position thereof to said support frame and at a second position thereof to said impacting member; vibration drive means operably mounted on said impacting member, said drive means being positioned to induce straight line motion in said impacting member at one location on said impacting member; and an impact transmitting surface located on said impacting member at the point on said impacting member where straight line motion is experienced.
Claim 2
Dependent Claim
104 words
An impact force producing apparatus, comprising a support frame; an impacting member resiliently mounted on said frame for relatively free vibrational movement thereof; a plurality of resilient elements, each resilient element being attached at one position thereof to said support frame and at a second position thereof to said impacting member; vibration drive means operably mounted on said impacting member, said drive means being positioned to induce straight line motion in said impacting member at one location on said impacting member; and an impact transmitting surface located on said impacting member at the point on said impacting member where straight line motion is experienced.
Claim 3
Dependent Claim
28 words
The apparatus of claim 1 wherein said vibration drive means comprises an eccentric weight rotatably mounted on said impacting member and a motor for driving said eccentric weight.
Claim 4
Dependent Claim
19 words
The apparatus of claim 1 including means capable of rigidly attaching said support frame to a heavy-duty articulated arm.
Claim 5
Dependent Claim
16 words
The apparatus of claim 1 wherein said impact transmitting surface is located at a horizontal node.
Claim 6
Dependent Claim
29 words
The apparatus of claim 1 wherein said apparatus further comprises guide means for attenuating random vibrational disturbances in said impacting member, said guide means being on said support frame.
Claim 7
Dependent Claim
29 words
The apparatus of claim 5 wherein said guide means cooperates with said impacting member adjacent said impact transmitting surface to insure straight line motion of said impact transmitting surface.
Claim 8
Dependent Claim
69 words
The apparatus of claim 1 wherein there are four of saiD plurality of said resilient elements the first pair of said resilient elements being located between the center of gravity of the impacting member and the impact transmitting surface, and the second pair of said resilient elements being located on the other side of the center of gravity of said impacting member from said first pair of resilient elements.
Claim 9
Dependent Claim
23 words
The apparatus of claim 7 wherein said first pair of resilient elements is substantially more rigid than said second pair of resilient elements.
Claim 10
Dependent Claim
14 words
The apparatus of claim 7 wherein said resilient elements are blocks of flexible material.
Claim 11
Dependent Claim
33 words
The apparatus of claim 1 wherein said apparatus further comprises a tool slidably mounted to said support frame, said tool being capable of being positioned in impacting contact with said impact transmitting surface.
Claim 12
Dependent Claim
33 words
The apparatus of claim 10 wherein said tool is oriented in said support frame to slidably move along the same direction as the straight line motion of the point on said impacting member.
Claim 13
Dependent Claim
62 words
The apparatus of claim 10 further comprising means for restricting movement of said tool beyond a preselected position towards said impacting member, said restricting means including a collar rigidly fixed to said tool capable of engaging said support frame, said collar being placed on said tool to allow said tool to force said impacting member a fixed distance from its relaxed position.
Claim 14
Dependent Claim
101 words
A vibratory impact hammer comprising a support frame; a ram; means for supporting said ram in said support frame, said means having a low effective modulus of elasticity in at least one plane of movement of said ram relative to said support frame; an eccentric weight rotatably mounted on said ram at a distance from the center of gravity of said ram; means for rotating said eccentric weight to cause vibratory movement of said ram; and an impact transmitting surface located on said ram at a lateral node in the motion of said ram defined when said eccentric weight is rotated.
Claim 15
Dependent Claim
101 words
A vibratory impact hammer comprising a support frame; a ram; means for supporting said ram in said support frame, said means having a low effective modulus of elasticity in at least one plane of movement of said ram relative to said support frame; an eccentric weight rotatably mounted on said ram at a distance from the center of gravity of said ram; means for rotating said eccentric weight to cause vibratory movement of said ram; and an impact transmitting surface located on said ram at a lateral node in the motion of said ram defined when said eccentric weight is rotated.
Claim 16
Dependent Claim
41 words
The apparatus of claim 13 wherein said means for rotating said eccentric weight include a hydraulic motor mounted in said ram and means for controlling the volumetric rate of flow of hydraulic fluid to said motor for controlling the vibration rate.
Claim 17
Dependent Claim
18 words
The apparatus of claim 13 wherein said eccentric is rotatably mounted on an axis perpendicular to said plane.
Claim 18
Dependent Claim
30 words
The apparatus of claim 13 further comprising a tool slidably mounted on said support frame, said tool being capable of impacting contact with said ram on said impact transmitting surface.
Claim 19
Dependent Claim
26 words
The apparatus of claim 16 wherein said tool is constrained from moving against said ram past a preselected position to establish a preload on said ram.
Claim 20
Dependent Claim
109 words
A vibratory impact apparatus comprising a support structure; a ram assembly; suspension means for suspending said ram assembly on said support frame for resilient movement in at least one direction; said ram assembly including a ram, eccentric means for inducing vibration in said ram with movement in at least said one direction and means for driving said eccentric means, said ram assembly having a ratio of eccentricity of said eccentric means measured in inch-pounds to the ram assembly weight measured in pounds of about 1:5; and tool means adapted to be mounted on said support structure and capable of being impacted by said ram during vibration of said ram.
Claim 21
Dependent Claim
109 words
A vibratory impact apparatus comprising a support structure; a ram assembly; suspension means for suspending said ram assembly on said support frame for resilient movement in at least one direction; said ram assembly including a ram, eccentric means for inducing vibration in said ram with movement in at least said one direction and means for driving said eccentric means, said ram assembly having a ratio of eccentricity of said eccentric means measured in inch-pounds to the ram assembly weight measured in pounds of about 1:5; and tool means adapted to be mounted on said support structure and capable of being impacted by said ram during vibration of said ram.
Claim 22
Dependent Claim
60 words
The apparatus of claim 18 wherein said ram has a generally I-beam cross-section at least at portions therealong taken in a plane perpendicular to said one direction, and said suspension means comprises rubber mounts extending from said frame to said ram perpendicular to said one direction and between the flanges of and connected to the web of said I-beam cross-section.
Claim 23
Dependent Claim
37 words
The apparatus of claim 18 wherein said vibration inducing means is comprised of an eccentric means rotatably mounted in said ram and a hydraulic motor mounted on said ram and connecteD to and driving said eccentric means.
Claim 24
Dependent Claim
14 words
The apparatus of claim 18 wherein said eccentric means includes a single eccentric weight.
Claim 25
Dependent Claim
17 words
The apparatus of claim 18 wherein said means for driving said eccentric means includes a hydraulic motor.
Claim 26
Dependent Claim
38 words
The apparatus of claim 18 wherein said suspension means includes a plurality of resilient elements, each resilient element being attached at one position thereof to said support structure and at a second position thereof to said ram assembly.
Claim 27
Dependent Claim
55 words
The assembly of claim 18 wherein said ram assembly includes a single eccentric weight mounted on said ram at a distance from the center of gravity of said ram and an impact transmitting surface located on said ram at a lateral node in the motion of said ram defined when said eccentric weight is rotated.
Claim 28
Dependent Claim
42 words
The apparatus of claim 18 wherein said tool means is moveably mounted on said support frame for selective movement into or out of position to be impacted by said ram for selective free vibrtion of said ram without impacting said tool means.
Claim 29
Dependent Claim
59 words
The apparatus of claim 25 wherein said tool means is moveable to a limit position toward said ram beyond which said tool means will not move toward ram regardless of forces applied, and in said limit position said tool means cause a precompression of said resilient suspension by displacing said ram from the natural free-suspended position of the ram.
Claim 30
Dependent Claim
24 words
The apparatus of claim 18 wherein said suspension means has a low modulus of elasticity in a single plane that includes said one direction.
Claim 31
Dependent Claim
30 words
The apparatus of claim 27 wherein vibration inducing means is comprised of a single eccentric weight rotatably mounted in said ram and rotating on an axis perpendicular to said plane.
Claim 32
Dependent Claim
48 words
The apparatus of claim 28 wherein said eccentric weight is spaced on said ram from the center of gravity of said ram to create a point on said ram experiencing a lateral node during rotation of said eccentric weight, said point being located for impacting said tool means.
Claim 33
Dependent Claim
105 words
An impact force producing apparatus, comprising a support frame; an impacting member resiliently mounted on said frame for relatively free vibrational movement thereof; a plurality of blocks of flexible material, each block being attached at one position thereof to said support frame and at a second position thereof to said impacting member; vibration drive means operably mounted on said impacting member, said drive means being positioned to induce straight line motion in said impacting member at one location on said impacting member; and an impact transmitting surface located on said impacting member at the point on said impacting member where straight line motion is experienced.
Claim 34
Dependent Claim
105 words
An impact force producing apparatus, comprising a support frame; an impacting member resiliently mounted on said frame for relatively free vibrational movement thereof; a plurality of blocks of flexible material, each block being attached at one position thereof to said support frame and at a second position thereof to said impacting member; vibration drive means operably mounted on said impacting member, said drive means being positioned to induce straight line motion in said impacting member at one location on said impacting member; and an impact transmitting surface located on said impacting member at the point on said impacting member where straight line motion is experienced.
Claim 35
Dependent Claim
116 words
An impact force producing apparatus, comprising a support frame; an impacting member resiliently mounted on said frame for relatively free vibrational movement thereof; a plurality of blocks of flexible material, each said block being attached at one position thereof to said support frame and at a second position thereof to said impacting member; an eccentric weight rotatably mounted on said impacting member at a distance from the center of gravity of said impacting member; means for rotating said eccentric weight to cause vibratory movement of said impacting member; and an impact transmitting surface located on said impacting member at a lateral node in the motion of said impacting member defined when said eccentric weight is rotated.
Claim 36
Dependent Claim
116 words
An impact force producing apparatus, comprising a support frame; an impacting member resiliently mounted on said frame for relatively free vibrational movement thereof; a plurality of blocks of flexible material, each said block being attached at one position thereof to said support frame and at a second position thereof to said impacting member; an eccentric weight rotatably mounted on said impacting member at a distance from the center of gravity of said impacting member; means for rotating said eccentric weight to cause vibratory movement of said impacting member; and an impact transmitting surface located on said impacting member at a lateral node in the motion of said impacting member defined when said eccentric weight is rotated.
Claim 37
Dependent Claim
133 words
A vibratory impact hammer comprising a support frame; a ram assembly; a plurality of blocks of flexible material, each said block being attached at one position thereof to said support frame and at a second position thereof to said ram assembly; said ram assembly including a ram, an eccentric weight rotatably mounted on said ram at a distance from the center of gravity of said ram assembly, said eccentric weight having a relatively small eccentricity compared tO the weight of the ram assembly, and an impact transmitting surface located on said ram at a lateral node in the motion of said ram defined when said eccentric weight is rotated; and tool means adapted to be mounted on said support structure and capable of being impacted by said ram during vibration of said ram.
Claim 38
Dependent Claim
133 words
A vibratory impact hammer comprising a support frame; a ram assembly; a plurality of blocks of flexible material, each said block being attached at one position thereof to said support frame and at a second position thereof to said ram assembly; said ram assembly including a ram, an eccentric weight rotatably mounted on said ram at a distance from the center of gravity of said ram assembly, said eccentric weight having a relatively small eccentricity compared tO the weight of the ram assembly, and an impact transmitting surface located on said ram at a lateral node in the motion of said ram defined when said eccentric weight is rotated; and tool means adapted to be mounted on said support structure and capable of being impacted by said ram during vibration of said ram.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |